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ASRock Fatal1ty X99M Killer Review | 107 Data compared

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  • Avg. price in UK: ~£170
  • Avg. price in US: ~$250
  • CPU socket: LGA 2011-3
  • Chipset: Intel X99
  • Form factor: microATX

ASRock Fatal1ty X99M Killer review. Compare 107 technical specifications and user reviews to see how it ranks among motherboards and if it is worth buying.

5.3

Overall score

What it is: An overall evaluation of the motherboard's quality, based on technical analyses and user reviews.

When it matters: When you need a quick reference to identify the best motherboards on the market.

Score components:

90.0%

5.3

Technical Score

10.0%

5.3

User score

Good
5.3

Technical Score

What it is: An assessment of the motherboard's technical performance, covering key areas such as power delivery, CPU and memory support, expansion, storage, connectivity, cooling, BIOS features, and design.

When it matters: When you want to compare motherboards based on technical performance and available features.

Score components:

19.0%

6.0

Memory

16.0%

6.5

Platform & Features

16.0%

4.5

Storage

15.0%

5.3

Network

13.0%

3.2

Ports & USB

8.0%

4.0

Expansion

8.0%

5.8

Power & Cooling

5.0%

8.6

Audio

Good
5.3

User score

What it is: A rating that combines user reviews and the total number of reviews received by the motherboard.

When it matters: When you want to understand how a motherboard performs in real-world builds and how reliable it is in terms of stability, BIOS usability, connectivity, and long-term ownership.

Score components:

70.0%

6.6

User reviews

30.0%

2.3

Popularity

User score:
United Kingdom
amazon
2.8
(8)
amazon
4.6
(5)
United States
Amazon_logo.png
2.6
(9)
Amazon_logo.png
4.7
(5)

(Reviews last updated: May 2026)

Good
  • 4.0
    Gaming

    Score components:

    28.0%

    6.5

    VRM phases

    22.0%

    3.3

    N. of M.2 sockets

    18.0%

    4.6

    LAN speed

    17.0%

    3.0

    Maximum RAM speed

    15.0%

    1.0

    N. of PCIe 5.0 x16 slots

  • asrock-fatal1ty-x99m-killer
asrock-fatal1ty-x99m-killer

Best prices in UK

Best rankings

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Available: ranking among products currently available (including other versions of this product).
All: ranking among all products in the database.

Verdict

The ASRock Fatal1ty X99M Killer is a high-performance Micro-ATX motherboard designed for the Intel LGA 2011-3 socket, supporting Core i7 and Xeon E5 series processors with an robust 12-phase power design. It features four DDR4 slots supporting quad-channel memory up to 3000MHz (OC), dual gigabit LAN (Intel and Killer E2200), and ten SATA3 ports alongside an Ultra M.2 slot for high-speed storage. Main pros include its premium Super Alloy components like 60A power chokes and Nichicon 12K platinum caps for enhanced stability, Purity Sound 2 audio for superior 7.1 channel output, and a compact form factor that doesn't compromise on workstation-class features like ECC memory support. However, cons include limited expansion potential with only three PCIe slots due to its small size and the potential for clearance issues when using oversized CPU coolers or large GPUs in the top slot.

Technical Specifications of ASRock Fatal1ty X99M Killer

Technical Score

What it is: An assessment of the motherboard's technical performance, covering key areas such as power delivery, CPU and memory support, expansion, storage, connectivity, cooling, BIOS features, and design.

When it matters: When you want to compare motherboards based on technical performance and available features.

Score components:

19.0%

6.0

Memory

16.0%

6.5

Platform & Features

16.0%

4.5

Storage

15.0%

5.3

Network

13.0%

3.2

Ports & USB

8.0%

4.0

Expansion

8.0%

5.8

Power & Cooling

5.0%

8.6

Audio

5.3
ASRock Fatal1ty X99M Killer has a technical score of 5.33 points, which is lower than that of 72.3% of products in this category.
User score

What it is: A rating that combines user reviews and the total number of reviews received by the motherboard.

When it matters: When you want to understand how a motherboard performs in real-world builds and how reliable it is in terms of stability, BIOS usability, connectivity, and long-term ownership.

Score components:

70.0%

6.6

User reviews

30.0%

2.3

Popularity

User score:
United Kingdom
amazon
2.8
(8)
amazon
4.6
(5)
United States
Amazon_logo.png
2.6
(9)
Amazon_logo.png
4.7
(5)

(Reviews last updated: May 2026)

5.3
ASRock Fatal1ty X99M Killer has a user score of 5.33 points, which is lower than that of 97.9% of products in this category.
Popularity
What it is: An indicator based on the number of reviews received by the motherboard.
When it matters: When you prefer a motherboard that has already been bought and reviewed by many other users.
2.3
ASRock Fatal1ty X99M Killer has a popularity of 2.3 points, which is lower than 66.8% of products in this category.
Ratio quality/price

What it is: An indicator that combines the motherboard's overall rating with its cost.

When it matters: When you are looking for a motherboard that offers a strong balance of features, performance, and price.

Score components:

60.0%

5.3

Overall score

40.0%

9.6

Price

6.6
ASRock Fatal1ty X99M Killer has a quality-to-price ratio of 6.6 points, which is lower than 75.9% of products in this category.
Brand name
What it is: The brand that makes the motherboard.
When it matters: When you have a brand preference for support, BIOS, or build quality.

Importance: MEDIUM

Asrock
CPU socket
What it is: The socket type the motherboard is built to support.
When it matters: When you need the motherboard to match a specific CPU.

Importance: HIGH

LGA 2011-3
ASRock Fatal1ty X99M Killer uses the LGA 2011-3 CPU socket, which is less advanced than that of 84.3% of motherboards and equal to that of 2.5% of motherboards.
CPU platform

Importance: MEDIUM

Intel
Chipset
What it is: The chipset that defines the motherboard platform and many of its features.
When it matters: When you compare platform features, connectivity, and CPU support.

Importance: HIGH

Intel X99
ASRock Fatal1ty X99M Killer uses the Intel X99 chipset, which is less advanced than that of 67.4% of motherboards and equal to that of 2.4% of motherboards.
Form factor
What it is: The physical size standard of the motherboard, such as ATX or Micro-ATX.
When it matters: When you need the board to fit a specific case size.

Importance: HIGH

microATX
ASRock Fatal1ty X99M Killer has the microATX form factor, which is less versatile than that of 52.2% of motherboards and equal to that of 32.4% of motherboards.
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DDR memory version
What it is: The RAM generation the motherboard supports, such as DDR4 or DDR5.
When it matters: When you need the board to match a certain memory platform.

Importance: HIGH

Good value: DDR5

DDR4
ASRock Fatal1ty X99M Killer uses DDR4 memory, which is newer than that of 13.6% of motherboards and equal to that of 51% of motherboards.
Memory slots
What it is: The number of RAM slots on the motherboard.
When it matters: When you want more room for future memory upgrades.

Importance: HIGH

Good value: >=4

4
ASRock Fatal1ty X99M Killer has 4 Memory slots, which is more than 21.5% of motherboards and equal to 72.5% of motherboards.
Maximum memory capacity
What it is: The largest total amount of RAM the motherboard supports.
When it matters: When you plan a build with very high memory capacity.

Importance: HIGH

Good value: >=128 GB

64 GB
ASRock Fatal1ty X99M Killer supports up to 64 GB of memory, which is less than 62.6% of motherboards and equal to 24.3% of motherboards.
Memory channels
What it is: The memory channel configuration supported by the motherboard platform.
When it matters: When memory bandwidth matters for your build.

Importance: MEDIUM

4
ASRock Fatal1ty X99M Killer supports 4 memory channels, which is more than 92.8% of motherboards and equal to 6.9% of motherboards.
Maximum RAM speed
What it is: The highest officially supported memory speed for the motherboard.
When it matters: When you choose RAM and want to know the supported speed ceiling.

Importance: HIGH

Good value: >=6400 MT/s

3,000 MT/s
ASRock Fatal1ty X99M Killer supports memory speeds up to 3000 MT/s, which is lower than that of 73.9% of motherboards and equal to that of 1.1% of motherboards.
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N. of M.2 sockets
What it is: The number of M.2 slots available on the motherboard.
When it matters: When you want room for more NVMe or M.2 drives.

Importance: HIGH

Good value: >=3

1
ASRock Fatal1ty X99M Killer has 1 M.2 sockets, which is fewer than 69.2% of motherboards and equal to 19.1% of motherboards.
M.2 slot interface per slot
What it is: The storage or PCIe interface available for each M.2 slot on the motherboard.
When it matters: When you want to check which drives each M.2 slot can use.

Importance: HIGH

1x PCIe 3.0 x4/SATA
ASRock Fatal1ty X99M Killer offers 1x PCIe 3.0x4/SATA for M.2 slot interfaces, which is slower than that of 73.8% of motherboards and equal to that of 10.4% of motherboards.
N. of SATA 3 connectors
What it is: The number of SATA 6Gb/s connectors on the motherboard.
When it matters: When you plan to connect multiple SATA drives.

Importance: MEDIUM

Good value: >=6

10
ASRock Fatal1ty X99M Killer has 10 SATA 3 connectors, which is more than 96.7% of motherboards and equal to 3.3% of motherboards.
Supported RAID levels
What it is: The RAID modes officially supported by the motherboard storage platform.
When it matters: When you plan to use multiple drives in a RAID setup.

Importance: MEDIUM

0/1/5/10
ASRock Fatal1ty X99M Killer supports RAID levels 0/1/5/10, which is broader than 31.8% of motherboards and equal to 68.2% of motherboards.
SATA only
NVMe RAID support
What it is: Shows whether the board supports RAID configurations that use NVMe SSDs.
When it matters: When you plan to use multiple NVMe drives in RAID.

Importance: LOW

no
ASRock Fatal1ty X99M Killer does not support NVMe RAID. 59.8% of motherboards support this feature.
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N. of PCIe 5.0 x16 slots
What it is: The number of PCIe 5.0 x16 physical slots on the motherboard.
When it matters: When you want the newest high-bandwidth expansion slots.

Importance: HIGH

Good value: >=1

0
ASRock Fatal1ty X99M Killer has 0 PCIe 5.0x16 slots, which is equal to 68.5% of motherboards.
N. of PCIe 4.0 x16 slots
What it is: The number of PCIe 4.0 x16 physical slots on the motherboard.
When it matters: When you want more room for modern expansion cards.

Importance: HIGH

Good value: >=1

0
ASRock Fatal1ty X99M Killer has 0 PCIe 4.0x16 slots, which is equal to 55.6% of motherboards.
N. of PCIe 3.0 x16 slots
What it is: The number of PCIe 3.0 x16 physical slots on the motherboard.
When it matters: When you need more full-length expansion slots.

Importance: MEDIUM

2
ASRock Fatal1ty X99M Killer has 2 PCIe 3.0x16 slots, which is more than 67.4% of motherboards and equal to 15.4% of motherboards.
PCIe slot electrical configuration
What it is: The actual lane wiring used by the motherboard PCIe slots.
When it matters: When you need to know how much bandwidth each slot really gets.

Importance: HIGH

x16/x16, x16/x8
ASRock Fatal1ty X99M Killer uses x16/x16, x16/x8 for PCIe slot electrical configuration, which is more flexible than that of 89.9% of motherboards and equal to that of 0.1% of motherboards.
Depends on CPU.
PCIe bifurcation support
What it is: Shows whether the board can split PCIe lanes across multiple devices from one slot or link.
When it matters: When you plan multi-SSD adapters or more advanced expansion setups.

Importance: MEDIUM

yes
ASRock Fatal1ty X99M Killer supports PCIe bifurcation. 39.1% of motherboards support this feature.
Show more
Total USB ports (rear I/O)
What it is: The total number of rear USB ports available on the motherboard.
When it matters: When you use many USB devices directly from the back of the PC.

Importance: MEDIUM

Good value: >=8

8
ASRock Fatal1ty X99M Killer has 8 USB ports (rear I/O), which is more than 40.3% of motherboards and equal to 30.7% of motherboards.
Total USB ports (including headers)
What it is: The total number of USB ports supported when rear ports and internal headers are counted together.
When it matters: When you want to know the board's full USB expansion potential.

Importance: MEDIUM

Good value: >=14

14
ASRock Fatal1ty X99M Killer has 14 USB ports (including headers), which is fewer than 51.8% of motherboards and equal to 12.9% of motherboards.
Total USB-C ports (rear I/O)
What it is: The total number of rear USB-C ports on the motherboard.
When it matters: When you want more USB-C devices connected without adapters.

Importance: MEDIUM

Good value: >=1

0
ASRock Fatal1ty X99M Killer has 0 USB-C ports (rear I/O), which is fewer than 64.6% of motherboards and equal to 35.4% of motherboards.
Total USB-C ports (including headers)
What it is: The total number of USB-C ports supported when rear ports and internal headers are counted together.
When it matters: When you want more USB-C connectivity across the whole build.

Importance: MEDIUM

Good value: >=2

0
ASRock Fatal1ty X99M Killer has 0 USB-C ports (including headers), which is fewer than 69.6% of motherboards and equal to 30.4% of motherboards.
N. of USB 3.2 Gen2x2 ports (USB-C)
What it is: The number of rear USB 3.2 Gen2x2 Type-C ports on the motherboard.
When it matters: When you want very fast USB-C connectivity on the rear I/O.

Importance: HIGH

Good value: >=1

0
ASRock Fatal1ty X99M Killer has 0 USB 3.2 Gen2x2 ports (USB-C), which is equal to 81.6% of motherboards.
Show more
LAN speed
What it is: The maximum wired Ethernet speed supported by the motherboard.
When it matters: When you want faster wired networking.

Importance: HIGH

Good value: 2.5GbE

1 Gbps
ASRock Fatal1ty X99M Killer supports LAN speeds up to 1 Gbps, which is lower than that of 50.8% of motherboards and equal to that of 49.1% of motherboards.
LAN controller
What it is: The model of onboard Ethernet controller used by the motherboard.
When it matters: When you compare networking hardware quality and features.

Importance: MEDIUM

Intel I218-V + Killer E2200
ASRock Fatal1ty X99M Killer uses the Intel I218-V + Killer E2200 LAN controller, which is less advanced than that of 59.7% of motherboards and equal to that of 0.2% of motherboards.
dual LAN
N. of RJ45 ports
What it is: The number of wired Ethernet ports on the motherboard.
When it matters: When you need one or more wired network connections.

Importance: LOW

2
ASRock Fatal1ty X99M Killer has 2 RJ45 ports, which is more than 85.6% of motherboards and equal to 13.5% of motherboards.
Wi-Fi connectivity
What it is: Shows whether the motherboard includes onboard Wi-Fi hardware instead of requiring a separate adapter.
When it matters: When you want wireless networking without adding an extra card.

Importance: MEDIUM

no
ASRock Fatal1ty X99M Killer does not support Wi-Fi connectivity. 49.1% of motherboards support this feature.
Wi-Fi version
What it is: The supported Wi-Fi generation, such as Wi-Fi 6 or Wi-Fi 7.
When it matters: When you care about wireless speed and router compatibility.

Importance: MEDIUM

Good value: Wi-Fi 6E (802.11ax)

N/A
Show more
Audio codec
What it is: The onboard audio codec used by the motherboard.
When it matters: When sound quality from the built-in audio matters to you.

Importance: MEDIUM

Realtek ALC1150
ASRock Fatal1ty X99M Killer uses the Realtek ALC1150 audio codec, which is more advanced than that of 52.3% of motherboards and equal to that of 9.3% of motherboards.
Audio channels
What it is: The audio channel configuration supported by the onboard sound solution.
When it matters: When you want surround sound from the motherboard audio outputs.

Importance: LOW

Good value: 7.1

7.1
ASRock Fatal1ty X99M Killer offers 7.1 audio channels, which is more than 4.9% of motherboards and equal to 95.1% of motherboards.
Audio SNR
What it is: The signal-to-noise ratio of the onboard audio solution.
When it matters: When you care about cleaner onboard audio output.

Importance: MEDIUM

Good value: >=120 dB

115 dB
ASRock Fatal1ty X99M Killer has an audio SNR of 115 dB, which is higher than that of 46.5% of motherboards and equal to that of 8.2% of motherboards.
Headphone amp support
What it is: Shows whether the onboard audio path includes dedicated headphone amplification for harder-to-drive headsets.
When it matters: When you use harder-to-drive headphones from the onboard audio.

Importance: LOW

yes
ASRock Fatal1ty X99M Killer supports a headphone amp. 37% of motherboards support this feature.
supports up to 600Ω.
N. of 3.5mm audio jacks
What it is: The number of rear 3.5mm audio jacks on the motherboard.
When it matters: When you want more analog audio connection options.

Importance: LOW

Good value: >=5

5
ASRock Fatal1ty X99M Killer has 5 3.5mm audio jacks, which is more than 49.8% of motherboards and equal to 36.8% of motherboards.
Show more
VRM phases
What it is: The number of power-delivery phases used by the motherboard VRM.
When it matters: When you care about CPU power delivery and overclocking headroom.

Importance: HIGH

Good value: >=12

12
ASRock Fatal1ty X99M Killer has 12 VRM phases, which is more than 53.6% of motherboards and equal to 4.3% of motherboards.
N. of CPU power connectors
What it is: The number of CPU power connectors on the motherboard.
When it matters: When you care about power delivery for higher-end CPUs.

Importance: HIGH

Good value: >=2

1
ASRock Fatal1ty X99M Killer has 1 CPU power connectors, which is equal to 54.5% of motherboards.
N. of fan headers
What it is: The number of headers available for case or CPU fans.
When it matters: When your build uses several fans.

Importance: MEDIUM

Good value: >=6

5
ASRock Fatal1ty X99M Killer has 5 fan headers, which is more than 35.8% of motherboards and equal to 14.5% of motherboards.
Pump header
What it is: Shows whether the motherboard includes a dedicated header designed for a liquid-cooling pump.
When it matters: When you build with an AIO or custom liquid cooling loop.

Importance: MEDIUM

yes
ASRock Fatal1ty X99M Killer has a pump header. 23.1% of motherboards include this feature.
Pump header max current
What it is: The maximum current the dedicated pump header can supply.
When it matters: When you want to make sure the pump header can power your cooling setup.

Importance: LOW

Good value: >=2 A

?
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ASRock Fatal1ty X99M Killer vs the average motherboard

  • 1 more RJ45 ports
    ASRock Fatal1ty X99M Killer has more RJ45 ports than the average motherboard (2 vs 1). The average motherboard has 1 RJ45 port/s.
    What it is: The number of wired Ethernet ports on the motherboard.
    When it matters: When you need one or more wired network connections.

    Importance: LOW

    ASRock Fatal1ty X99M Killer has more RJ45 ports than the average motherboard (2 vs 1). The average motherboard has 1 RJ45 port/s.2 vs 1
  • More flexible PCIe lane configuration
    ASRock Fatal1ty X99M Killer has more flexible PCIe lane configuration than the average motherboard (x16/x16, x16/x8 vs x16/x1). The average motherboard uses x16/x1 PCIe slot lane configuration.
    Depends on CPU.
    What it is: The actual lane wiring used by the motherboard PCIe slots.
    When it matters: When you need to know how much bandwidth each slot really gets.

    Importance: HIGH

    ASRock Fatal1ty X99M Killer has more flexible PCIe lane configuration than the average motherboard (x16/x16, x16/x8 vs x16/x1). The average motherboard uses x16/x1 PCIe slot lane configuration.x16/x16, x16/x8 vs x16/x1
  • Includes POST code display
    ASRock Fatal1ty X99M Killer has a POST code display, while the average motherboard does not. 27.2% of motherboards include a POST code display.
    Dr. Debug display.
    What it is: Shows whether the board includes a diagnostic POST code readout for boot troubleshooting.
    When it matters: When you troubleshoot boot issues and want clearer error information.

    Importance: LOW

    ASRock Fatal1ty X99M Killer has a POST code display, while the average motherboard does not. 27.2% of motherboards include a POST code display.
  • Includes dual BIOS
    ASRock Fatal1ty X99M Killer has dual BIOS, while the average motherboard does not. 22.4% of motherboards include dual BIOS.
    What it is: Shows whether the motherboard includes two BIOS chips for redundancy or recovery.
    When it matters: When BIOS safety and recovery matter to you.

    Importance: LOW

    ASRock Fatal1ty X99M Killer has dual BIOS, while the average motherboard does not. 22.4% of motherboards include dual BIOS.
  • More BIOS update options
    ASRock Fatal1ty X99M Killer has more BIOS update options than the average motherboard (UEFI utility, flashback, Windows app, DOS, internet flash vs UEFI utility, flashback, Windows app). The average motherboard offers UEFI utility, flashback, Windows app BIOS update methods.
    What it is: The available ways to update the motherboard BIOS.
    When it matters: When you want easier BIOS maintenance and recovery.

    Importance: LOW

    ASRock Fatal1ty X99M Killer has more BIOS update options than the average motherboard (UEFI utility, flashback, Windows app, DOS, internet flash vs UEFI utility, flashback, Windows app). The average motherboard offers UEFI utility, flashback, Windows app BIOS update methods.UEFI utility, flashback, Windows app, DOS, internet flash vs UEFI utility, flashback, Windows app
  • 6 more SATA 3 connectors
    ASRock Fatal1ty X99M Killer has more SATA 3 connectors than the average motherboard (10 vs 4). The average motherboard has 4 SATA 3 connectors.
    What it is: The number of SATA 6Gb/s connectors on the motherboard.
    When it matters: When you plan to connect multiple SATA drives.

    Importance: MEDIUM

    Good value: >=6

    ASRock Fatal1ty X99M Killer has more SATA 3 connectors than the average motherboard (10 vs 4). The average motherboard has 4 SATA 3 connectors.10 vs 4
  • 1 more PCIe 2.0x16 slots
    ASRock Fatal1ty X99M Killer has more PCIe 2.0x16 slots than the average motherboard (1 vs 0). The average motherboard has 0 PCIe 2.0x16 slot/s.
    runs at x4 mode
    What it is: The number of PCIe 2.0 x16 physical slots on the motherboard.
    When it matters: When you compare older full-length expansion options.

    Importance: LOW

    ASRock Fatal1ty X99M Killer has more PCIe 2.0x16 slots than the average motherboard (1 vs 0). The average motherboard has 0 PCIe 2.0x16 slot/s.1 vs 0
  • Rear-panel CMOS reset button
    ASRock Fatal1ty X99M Killer has a rear-panel CMOS reset button, while the average motherboard does not. 26.5% of motherboards include a rear-panel CMOS reset button.
    What it is: A rear I/O button used to clear BIOS or CMOS settings quickly.
    When it matters: When you overclock or troubleshoot and want an easier reset method.

    Importance: LOW

    ASRock Fatal1ty X99M Killer has a rear-panel CMOS reset button, while the average motherboard does not. 26.5% of motherboards include a rear-panel CMOS reset button.
  • Includes POST code display
    ASRock Fatal1ty X99M Killer has a POST code display, while the average motherboard does not. 27.2% of motherboards include a POST code display.
  • Includes dual BIOS
    ASRock Fatal1ty X99M Killer has dual BIOS, while the average motherboard does not. 22.4% of motherboards include dual BIOS.
  • More BIOS update options
    ASRock Fatal1ty X99M Killer has more BIOS update options than the average motherboard (UEFI utility, flashback, Windows app, DOS, internet flash vs UEFI utility, flashback, Windows app). The average motherboard offers UEFI utility, flashback, Windows app BIOS update methods.
  • Rear-panel CMOS reset button
    ASRock Fatal1ty X99M Killer has a rear-panel CMOS reset button, while the average motherboard does not. 26.5% of motherboards include a rear-panel CMOS reset button.
  • Includes onboard power button
    ASRock Fatal1ty X99M Killer has an onboard power button, while the average motherboard does not. 27.7% of motherboards include an onboard power button.
  • Includes onboard reset button
    ASRock Fatal1ty X99M Killer has an onboard reset button, while the average motherboard does not. 27.6% of motherboards include an onboard reset button.
  • Supports ECC memory
    ASRock Fatal1ty X99M Killer supports ECC memory, while the average motherboard does not. 20.9% of motherboards support ECC memory.
  • More memory channels
    ASRock Fatal1ty X99M Killer has more memory channels than the average motherboard (4 vs 2). The average motherboard has 2 memory channel/s.
  • 6 more SATA 3 connectors
    ASRock Fatal1ty X99M Killer has more SATA 3 connectors than the average motherboard (10 vs 4). The average motherboard has 4 SATA 3 connectors.
  • More flexible PCIe lane configuration
    ASRock Fatal1ty X99M Killer has more flexible PCIe lane configuration than the average motherboard (x16/x16, x16/x8 vs x16/x1). The average motherboard uses x16/x1 PCIe slot lane configuration.
  • 1 more PCIe 2.0x16 slots
    ASRock Fatal1ty X99M Killer has more PCIe 2.0x16 slots than the average motherboard (1 vs 0). The average motherboard has 0 PCIe 2.0x16 slot/s.
  • 1 more USB4 or Thunderbolt headers
    ASRock Fatal1ty X99M Killer has more USB4 or Thunderbolt headers than the average motherboard (1 vs 0). The average motherboard has 0 USB4 or Thunderbolt header/s.
  • 1 more eSATA ports
    ASRock Fatal1ty X99M Killer has more eSATA ports than the average motherboard (1 vs 0). The average motherboard has 0 eSATA port/s.
  • 2 more USB 2.0 ports
    ASRock Fatal1ty X99M Killer has more USB 2.0 ports than the average motherboard (4 vs 2). The average motherboard has 2 USB 2.0 port/s.
  • 1 more RJ45 ports
    ASRock Fatal1ty X99M Killer has more RJ45 ports than the average motherboard (2 vs 1). The average motherboard has 1 RJ45 port/s.
  • 61 mm shorter
    ASRock Fatal1ty X99M Killer is shorter than the average motherboard (244 mm vs 305 mm). The average motherboard height is 305 mm.
  • More VRM phases
    ASRock Fatal1ty X99M Killer has more VRM phases than the average motherboard (12 vs 10). The average motherboard has 10 VRM phase/s.

Total
Platform & Features
Memory
Storage
Expansion
Ports & USB
Network
Power & Cooling
  • More basic motherboard chipset
    ASRock Fatal1ty X99M Killer has more basic motherboard chipset than the average motherboard (Intel X99 vs Intel B860). The average motherboard uses Intel B860 chipset.
  • No BIOS flashback support
    ASRock Fatal1ty X99M Killer does not support BIOS flashback, while the average motherboard does. 50.8% of motherboards support BIOS flashback.
  • No integrated graphics support
    ASRock Fatal1ty X99M Killer does not support integrated graphics, while the average motherboard does. 89.4% of motherboards support integrated graphics.
  • Not ready for Windows 11
    ASRock Fatal1ty X99M Killer is not ready for Windows 11, while the average motherboard is. 77.1% of motherboards are ready for Windows 11.
  • Narrower Windows support
    ASRock Fatal1ty X99M Killer has narrower Windows support than the average motherboard (Windows 10, Windows 8.1, Windows 7 vs Windows 11, Windows 10). The average motherboard supports Windows 11, Windows 10.
  • Less versatile form factor
    ASRock Fatal1ty X99M Killer has less versatile form factor than the average motherboard (microATX vs ATX). The average motherboard comes in ATX form factor.
  • 7 years older release date
    ASRock Fatal1ty X99M Killer is older than the average motherboard (2,014 vs 2,021). The average motherboard was released in 2,021.
    August 2014
  • 50% less maximum memory capacity
    ASRock Fatal1ty X99M Killer has fewer maximum memory capacity than the average motherboard (64 GB vs 128 GB). The average motherboard supports 128 GB of memory.
  • 34.8% lower maximum RAM speed
    ASRock Fatal1ty X99M Killer has a lower maximum RAM speed than the average motherboard (3,000 MT/s vs 4,600 MT/s). The average motherboard supports RAM speed of 4,600 MT/s.
  • 39.2% lower overclocked RAM speed
    ASRock Fatal1ty X99M Killer has a lower overclocked RAM speed than the average motherboard (3,000 MT/s vs 4,933 MT/s). The average motherboard supports overclocked RAM speed of 4,933 MT/s.
    maximum depends on CPU configuration
  • Slower M.2 slot interfaces
    ASRock Fatal1ty X99M Killer has slower M.2 slot interfaces than the average motherboard (1x PCIe 3.0x4/SATA vs 1x PCIe 5.0x4, 2x PCIe 4.0x4). The average motherboard uses 1x PCIe 5.0x4, 2x PCIe 4.0x4 M.2 slot interfaces.
  • No NVMe RAID support
    ASRock Fatal1ty X99M Killer does not support NVMe RAID, while the average motherboard does. 59.8% of motherboards support NVMe RAID.
  • 1 fewer M.2 sockets
    ASRock Fatal1ty X99M Killer has fewer M.2 sockets than the average motherboard (1 vs 2). The average motherboard has 2 M.2 socket/s.
  • 1 fewer PCIe x1 slots
    ASRock Fatal1ty X99M Killer has fewer PCIe x1 slots than the average motherboard (0 vs 1). The average motherboard has 1 PCIe x1 slot/s.
  • 1 fewer rear USB-C ports
    ASRock Fatal1ty X99M Killer has fewer rear USB-C ports than the average motherboard (0 vs 1). The average motherboard has 1 rear USB-C port/s.
  • 1 fewer USB 3.2 Gen2 ports
    ASRock Fatal1ty X99M Killer has fewer USB 3.2 Gen2 ports than the average motherboard (0 vs 1). The average motherboard has 1 USB 3.2 Gen2 port/s.
  • 1 fewer DisplayPort outputs
    ASRock Fatal1ty X99M Killer has fewer DisplayPort outputs than the average motherboard (0 vs 1). The average motherboard has 1 DisplayPort outputs.
  • 1 fewer total USB connections
    ASRock Fatal1ty X99M Killer has fewer total USB connections than the average motherboard (14 vs 15). The average motherboard has 15 total USB connections.
  • 1 fewer total USB-C connections
    ASRock Fatal1ty X99M Killer has fewer total USB-C connections than the average motherboard (0 vs 1). The average motherboard has 1 total USB-C connections.
  • 1 fewer HDMI outputs
    ASRock Fatal1ty X99M Killer has fewer HDMI outputs than the average motherboard (0 vs 1). The average motherboard has 1 HDMI outputs.
  • 60% lower LAN speed
    ASRock Fatal1ty X99M Killer has a lower LAN speed than the average motherboard (1 Gbps vs 2.5 Gbps). The average motherboard offers LAN speed of 2.5 Gbps.
  • No Wi-Fi antenna included
    ASRock Fatal1ty X99M Killer does not include a Wi-Fi antenna, while the average motherboard does. 51.1% of motherboards include a Wi-Fi antenna.
  • 2 fewer ARGB headers
    ASRock Fatal1ty X99M Killer has fewer ARGB headers than the average motherboard (0 vs 2). The average motherboard has 2 ARGB header/s.
  • No onboard RGB lighting
    ASRock Fatal1ty X99M Killer does not have onboard RGB lighting, while the average motherboard does. 50.3% of motherboards include onboard RGB lighting.
  • 1 fewer RGB headers
    ASRock Fatal1ty X99M Killer has fewer RGB headers than the average motherboard (0 vs 1). The average motherboard has 1 RGB header/s.
  • More basic motherboard chipset
    ASRock Fatal1ty X99M Killer has more basic motherboard chipset than the average motherboard (Intel X99 vs Intel B860). The average motherboard uses Intel B860 chipset.
    What it is: The chipset that defines the motherboard platform and many of its features.
    When it matters: When you compare platform features, connectivity, and CPU support.

    Importance: HIGH

    ASRock Fatal1ty X99M Killer has more basic motherboard chipset than the average motherboard (Intel X99 vs Intel B860). The average motherboard uses Intel B860 chipset.Intel X99 vs Intel B860
  • 60% lower LAN speed
    ASRock Fatal1ty X99M Killer has a lower LAN speed than the average motherboard (1 Gbps vs 2.5 Gbps). The average motherboard offers LAN speed of 2.5 Gbps.
    What it is: The maximum wired Ethernet speed supported by the motherboard.
    When it matters: When you want faster wired networking.

    Importance: HIGH

    Good value: 2.5GbE

    ASRock Fatal1ty X99M Killer has a lower LAN speed than the average motherboard (1 Gbps vs 2.5 Gbps). The average motherboard offers LAN speed of 2.5 Gbps.1 Gbps vs 2.5 Gbps
  • Slower M.2 slot interfaces
    ASRock Fatal1ty X99M Killer has slower M.2 slot interfaces than the average motherboard (1x PCIe 3.0x4/SATA vs 1x PCIe 5.0x4, 2x PCIe 4.0x4). The average motherboard uses 1x PCIe 5.0x4, 2x PCIe 4.0x4 M.2 slot interfaces.
    What it is: The storage or PCIe interface available for each M.2 slot on the motherboard.
    When it matters: When you want to check which drives each M.2 slot can use.

    Importance: HIGH

    ASRock Fatal1ty X99M Killer has slower M.2 slot interfaces than the average motherboard (1x PCIe 3.0x4/SATA vs 1x PCIe 5.0x4, 2x PCIe 4.0x4). The average motherboard uses 1x PCIe 5.0x4, 2x PCIe 4.0x4 M.2 slot interfaces.1x PCIe 3.0x4/SATA vs 1x PCIe 5.0x4, 2x PCIe 4.0x4
  • No NVMe RAID support
    ASRock Fatal1ty X99M Killer does not support NVMe RAID, while the average motherboard does. 59.8% of motherboards support NVMe RAID.
    What it is: Shows whether the board supports RAID configurations that use NVMe SSDs.
    When it matters: When you plan to use multiple NVMe drives in RAID.

    Importance: LOW

    ASRock Fatal1ty X99M Killer does not support NVMe RAID, while the average motherboard does. 59.8% of motherboards support NVMe RAID.
  • 50% less maximum memory capacity
    ASRock Fatal1ty X99M Killer has fewer maximum memory capacity than the average motherboard (64 GB vs 128 GB). The average motherboard supports 128 GB of memory.
    What it is: The largest total amount of RAM the motherboard supports.
    When it matters: When you plan a build with very high memory capacity.

    Importance: HIGH

    Good value: >=128 GB

    ASRock Fatal1ty X99M Killer has fewer maximum memory capacity than the average motherboard (64 GB vs 128 GB). The average motherboard supports 128 GB of memory.64 GB vs 128 GB
  • 1 fewer M.2 sockets
    ASRock Fatal1ty X99M Killer has fewer M.2 sockets than the average motherboard (1 vs 2). The average motherboard has 2 M.2 socket/s.
    What it is: The number of M.2 slots available on the motherboard.
    When it matters: When you want room for more NVMe or M.2 drives.

    Importance: HIGH

    Good value: >=3

    ASRock Fatal1ty X99M Killer has fewer M.2 sockets than the average motherboard (1 vs 2). The average motherboard has 2 M.2 socket/s.1 vs 2
  • No BIOS flashback support
    ASRock Fatal1ty X99M Killer does not support BIOS flashback, while the average motherboard does. 50.8% of motherboards support BIOS flashback.
    What it is: Shows whether the motherboard can update BIOS without needing a fully installed or supported CPU to boot first.
    When it matters: When you may need to update BIOS before the system can boot.

    Importance: MEDIUM

    ASRock Fatal1ty X99M Killer does not support BIOS flashback, while the average motherboard does. 50.8% of motherboards support BIOS flashback.
  • 1 fewer rear USB-C ports
    ASRock Fatal1ty X99M Killer has fewer rear USB-C ports than the average motherboard (0 vs 1). The average motherboard has 1 rear USB-C port/s.
    What it is: The total number of rear USB-C ports on the motherboard.
    When it matters: When you want more USB-C devices connected without adapters.

    Importance: MEDIUM

    Good value: >=1

    ASRock Fatal1ty X99M Killer has fewer rear USB-C ports than the average motherboard (0 vs 1). The average motherboard has 1 rear USB-C port/s.0 vs 1
Total
Overall
Platform & Features
Memory
Storage
Expansion
Ports & USB
Network
Power & Cooling

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Third-party reviews

United Kingdom
amazon
2.8
8 Reviews
amazon
4.6
5 Reviews
United States
Amazon_logo.png
2.6
9 Reviews
Amazon_logo.png
4.7
5 Reviews

(Reviews last updated: May 2026)

What customers like about ASRock Fatal1ty X99M Killer?

  • High build quality with ASRock Super Alloy components and Nichicon 12K Platinum caps
  • Excellent overclocking potential supported by a robust 12-phase power design
  • Compact Micro-ATX form factor that doesn't sacrifice high-end X99 features
  • Dual networking options featuring both Killer E2200 and Intel Gigabit LAN
  • Fast storage support via the 'Ultra M.2' slot (PCIe Gen3 x4)
  • Value-added accessories, including a 3-month XSplit premium membership

What customers dislike about ASRock Fatal1ty X99M Killer?

  • Awkward placement of the 8-pin CPU power connector can be blocked by large CPU coolers
  • Front-panel audio header is positioned far into the bottom-rear corner, causing reach issues in some cases
  • Limited to only four RAM slots due to the Micro-ATX size, capping total capacity compared to full ATX boards
  • Killer LAN drivers have been reported by some users to be less stable or more intrusive than standard Intel drivers
  • Overclocking can automatically ramp fans to maximum speed, leading to high noise levels

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