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ASRock Fatal1ty X99X Killer Review | 107 Data compared

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  • Avg. price in UK: ~£200
  • Avg. price in US: ~$180
  • CPU socket: LGA 2011-3
  • Chipset: Intel X99
  • Form factor: ATX

ASRock Fatal1ty X99X Killer review. Compare 107 technical specifications and user reviews to see how it ranks among motherboards and if it is worth buying.

6.0

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%

6.0

Technical Score

10.0%

6.0

User score

Good
6.0

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%

8.8

Memory

16.0%

6.5

Platform & Features

16.0%

4.5

Storage

15.0%

5.3

Network

13.0%

3.8

Ports & USB

8.0%

4.1

Expansion

8.0%

6.9

Power & Cooling

5.0%

8.6

Audio

Good
6.0

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%

7.8

User reviews

30.0%

1.9

Popularity

User score:
United Kingdom
amazon
3.9
(8)
United States
Amazon_logo.png
3.9
(8)

(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-x99x-killer
asrock-fatal1ty-x99x-killer

Best prices in UK

Best rankings

?

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

Verdict

The ASRock Fatal1ty X99X Killer is a high-performance ATX motherboard built on the Intel X99 chipset and LGA 2011-3 socket, supporting Intel Core i7 and Xeon processors. Key specifications include 8 DDR4 DIMM slots for quad-channel memory up to 128GB (3000+ MHz OC), a robust 12-phase power design with Super Alloy components, and triple PCIe 3.0 x16 slots for 3-way SLI or CrossFireX. It is tailored for gaming with a dedicated Fatal1ty Mouse Port, dual LAN (Killer E2200 and Intel Gigabit), Purity Sound 2 audio, and 10 SATA3 ports alongside an Ultra M.2 (PCIe Gen3 x4) socket. Main pros include its competitive pricing, high-end overclocking stability, and versatile workstation support including ECC memory and Xeon compatibility. Notable cons include the lack of built-in Wi-Fi on the base model and potential PCIe lane trade-offs when using the Ultra M.2 slot, which may disable specific slots or SATA ports depending on the CPU used.

Technical Specifications of ASRock Fatal1ty X99X 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%

8.8

Memory

16.0%

6.5

Platform & Features

16.0%

4.5

Storage

15.0%

5.3

Network

13.0%

3.8

Ports & USB

8.0%

4.1

Expansion

8.0%

6.9

Power & Cooling

5.0%

8.6

Audio

6.0
ASRock Fatal1ty X99X Killer has a technical score of 6.01 points, which is lower than that of 56.9% 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%

7.8

User reviews

30.0%

1.9

Popularity

User score:
United Kingdom
amazon
3.9
(8)
United States
Amazon_logo.png
3.9
(8)

(Reviews last updated: May 2026)

6.0
ASRock Fatal1ty X99X Killer has a user score of 6.02 points, which is lower than that of 93.7% 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.
1.9
ASRock Fatal1ty X99X Killer has a popularity of 1.9 points, which is lower than 69.9% 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%

6.0

Overall score

40.0%

9.5

Price

7.0
ASRock Fatal1ty X99X Killer has a quality-to-price ratio of 7 points, which is lower than 62.2% 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 X99X 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 X99X 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

ATX
ASRock Fatal1ty X99X Killer has the ATX form factor, which is more versatile than that of 47.8% of motherboards and equal to that of 52.2% of motherboards.
Show more
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 X99X 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

8
ASRock Fatal1ty X99X Killer has 8 Memory slots, which is more than 94% of motherboards and equal to 5.7% 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

256 GB
ASRock Fatal1ty X99X Killer supports up to 256 GB of memory, which is more than 82.8% of motherboards and equal to 16.5% of motherboards.
higher limit with Xeon CPU
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 X99X 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 X99X 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.
Show more
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 X99X 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

N/A
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 X99X 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 X99X Killer supports RAID levels 0/1/5/10, which is broader than 31.8% of motherboards and equal to 68.2% of motherboards.
JBOD excluded from RAID-level set
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 X99X Killer does not support NVMe RAID. 59.8% of motherboards support this feature.
Show more
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 X99X 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 X99X 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

3
ASRock Fatal1ty X99X Killer has 3 PCIe 3.0x16 slots, which is more than 82.8% of motherboards and equal to 11.1% 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/x8, x16/x8/x4
ASRock Fatal1ty X99X Killer uses x16/x16/x8, x16/x8/x4 for PCIe slot electrical configuration, which is more flexible than that of 94.1% of motherboards and equal to that of 0.4% 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

?
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 X99X 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

17
ASRock Fatal1ty X99X Killer has 17 USB ports (including headers), which is more than 72.1% of motherboards and equal to 10.8% of motherboards.
includes onboard internal USB port.
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 X99X 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 X99X 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 X99X 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 X99X 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 X99X 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 X99X 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 X99X 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 X99X 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 X99X 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 X99X 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 X99X 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 X99X 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 X99X 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

?
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

6
ASRock Fatal1ty X99X Killer has 6 fan headers, which is more than 50.3% of motherboards and equal to 22.3% 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 X99X 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

0 A
ASRock Fatal1ty X99X Killer supports up to 0 A on the pump header, which is lower than that of 74.3% of motherboards and equal to that of 25.7% of motherboards.
Show more

ASRock Fatal1ty X99X Killer vs the average motherboard

  • 2x more maximum memory capacity
    ASRock Fatal1ty X99X Killer has more maximum memory capacity than the average motherboard (256 GB vs 128 GB). The average motherboard supports 128 GB of memory.
    higher limit with Xeon CPU
    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 X99X Killer has more maximum memory capacity than the average motherboard (256 GB vs 128 GB). The average motherboard supports 128 GB of memory.256 GB vs 128 GB
  • 4 more memory slots
    ASRock Fatal1ty X99X Killer has more memory slots than the average motherboard (8 vs 4). The average motherboard has 4 memory slot/s.
    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

    ASRock Fatal1ty X99X Killer has more memory slots than the average motherboard (8 vs 4). The average motherboard has 4 memory slot/s.8 vs 4
  • 1 more RJ45 ports
    ASRock Fatal1ty X99X 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 X99X 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 X99X Killer has more flexible PCIe lane configuration than the average motherboard (x16/x16/x8, x16/x8/x4 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 X99X Killer has more flexible PCIe lane configuration than the average motherboard (x16/x16/x8, x16/x8/x4 vs x16/x1). The average motherboard uses x16/x1 PCIe slot lane configuration.x16/x16/x8, x16/x8/x4 vs x16/x1
  • Includes POST code display
    ASRock Fatal1ty X99X 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 X99X 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 X99X 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 X99X Killer has dual BIOS, while the average motherboard does not. 22.4% of motherboards include dual BIOS.
  • 1 more USB 3.2 Gen1 headers
    ASRock Fatal1ty X99X Killer has more USB 3.2 Gen1 headers than the average motherboard (2 vs 1). The average motherboard has 1 USB 3.2 Gen1 header/s.
    two internal headers
    What it is: The number of internal USB 3.2 Gen1 headers for front-panel Type-A ports.
    When it matters: When your case has front USB-A ports to connect.

    Importance: MEDIUM

    Good value: >=1

    ASRock Fatal1ty X99X Killer has more USB 3.2 Gen1 headers than the average motherboard (2 vs 1). The average motherboard has 1 USB 3.2 Gen1 header/s.2 vs 1
  • 6 more SATA 3 connectors
    ASRock Fatal1ty X99X 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 X99X Killer has more SATA 3 connectors than the average motherboard (10 vs 4). The average motherboard has 4 SATA 3 connectors.10 vs 4
  • Includes POST code display
    ASRock Fatal1ty X99X 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 X99X Killer has dual BIOS, while the average motherboard does not. 22.4% of motherboards include dual BIOS.
  • Rear-panel CMOS reset button
    ASRock Fatal1ty X99X 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.
  • More BIOS update options
    ASRock Fatal1ty X99X Killer has more BIOS update options than the average motherboard (UEFI utility, Windows app, DOS, internet flash vs UEFI utility, flashback, Windows app). The average motherboard offers UEFI utility, flashback, Windows app BIOS update methods.
  • Broader Windows support
    ASRock Fatal1ty X99X Killer has broader Windows support than the average motherboard (Windows 11, Windows 10, Windows 8.1, Windows 7 vs Windows 11, Windows 10). The average motherboard supports Windows 11, Windows 10.
  • Includes onboard power button
    ASRock Fatal1ty X99X 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 X99X Killer has an onboard reset button, while the average motherboard does not. 27.6% of motherboards include an onboard reset button.
  • 2x more maximum memory capacity
    ASRock Fatal1ty X99X Killer has more maximum memory capacity than the average motherboard (256 GB vs 128 GB). The average motherboard supports 128 GB of memory.
  • 4 more memory slots
    ASRock Fatal1ty X99X Killer has more memory slots than the average motherboard (8 vs 4). The average motherboard has 4 memory slot/s.
  • Supports ECC memory
    ASRock Fatal1ty X99X Killer supports ECC memory, while the average motherboard does not. 20.9% of motherboards support ECC memory.
  • More memory channels
    ASRock Fatal1ty X99X 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 X99X 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 X99X Killer has more flexible PCIe lane configuration than the average motherboard (x16/x16/x8, x16/x8/x4 vs x16/x1). The average motherboard uses x16/x1 PCIe slot lane configuration.
  • 1 more PCIe x1 slots
    ASRock Fatal1ty X99X Killer has more PCIe x1 slots than the average motherboard (2 vs 1). The average motherboard has 1 PCIe x1 slot/s.
  • 2 more PCIe 3.0x16 slots
    ASRock Fatal1ty X99X Killer has more PCIe 3.0x16 slots than the average motherboard (3 vs 1). The average motherboard has 1 PCIe 3.0x16 slot/s.
  • 1 more USB 3.2 Gen1 headers
    ASRock Fatal1ty X99X Killer has more USB 3.2 Gen1 headers than the average motherboard (2 vs 1). The average motherboard has 1 USB 3.2 Gen1 header/s.
  • 2 more total USB connections
    ASRock Fatal1ty X99X Killer has more total USB connections than the average motherboard (17 vs 15). The average motherboard has 15 total USB connections.
  • 1 more USB4 or Thunderbolt headers
    ASRock Fatal1ty X99X 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 X99X Killer has more eSATA ports than the average motherboard (1 vs 0). The average motherboard has 0 eSATA port/s.
  • 2 more USB 3.2 Gen1 ports
    ASRock Fatal1ty X99X Killer has more USB 3.2 Gen1 ports than the average motherboard (6 vs 4). The average motherboard has 4 USB 3.2 Gen1 port/s.
  • 1 more RJ45 ports
    ASRock Fatal1ty X99X Killer has more RJ45 ports than the average motherboard (2 vs 1). The average motherboard has 1 RJ45 port/s.
  • More VRM phases
    ASRock Fatal1ty X99X Killer has more VRM phases than the average motherboard (12 vs 10). The average motherboard has 10 VRM phase/s.
  • 1 more fan headers
    ASRock Fatal1ty X99X Killer has more fan headers than the average motherboard (6 vs 5). The average motherboard has 5 fan header/s.

Total
Platform & Features
Memory
Storage
Expansion
Ports & USB
Network
Power & Cooling
  • More basic motherboard chipset
    ASRock Fatal1ty X99X 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 X99X Killer does not support BIOS flashback, while the average motherboard does. 50.8% of motherboards support BIOS flashback.
  • No integrated graphics support
    ASRock Fatal1ty X99X 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 X99X Killer is not ready for Windows 11, while the average motherboard is. 77.1% of motherboards are ready for Windows 11.
  • 7 years older release date
    ASRock Fatal1ty X99X Killer is older than the average motherboard (2,014 vs 2,021). The average motherboard was released in 2,021.
  • 34.8% lower maximum RAM speed
    ASRock Fatal1ty X99X 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 X99X 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.
  • No NVMe RAID support
    ASRock Fatal1ty X99X 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 X99X Killer has fewer M.2 sockets than the average motherboard (1 vs 2). The average motherboard has 2 M.2 socket/s.
  • 1 fewer rear USB-C ports
    ASRock Fatal1ty X99X 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 X99X 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 X99X Killer has fewer DisplayPort outputs than the average motherboard (0 vs 1). The average motherboard has 1 DisplayPort outputs.
  • 1 fewer total USB-C connections
    ASRock Fatal1ty X99X 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 X99X 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 X99X 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 X99X 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 X99X 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 X99X 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 X99X Killer has fewer RGB headers than the average motherboard (0 vs 1). The average motherboard has 1 RGB header/s.
  • 2 A lower pump header current limit
    ASRock Fatal1ty X99X Killer has a lower pump header current than the average motherboard (0 A vs 2 A). The average motherboard provides pump header current of 2 A.
  • More basic motherboard chipset
    ASRock Fatal1ty X99X 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 X99X 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 X99X 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 X99X 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
  • No NVMe RAID support
    ASRock Fatal1ty X99X 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 X99X 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 X99X 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 X99X 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 X99X 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 X99X 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 X99X 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 X99X 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
  • No Wi-Fi antenna included
    ASRock Fatal1ty X99X Killer does not include a Wi-Fi antenna, while the average motherboard does. 51.1% of motherboards include a Wi-Fi antenna.
    What it is: Shows whether the external Wi-Fi antenna is included with the motherboard package.
    When it matters: When the board has Wi-Fi and you want it ready to use right away.

    Importance: LOW

    ASRock Fatal1ty X99X Killer does not include a Wi-Fi antenna, while the average motherboard does. 51.1% of motherboards include a Wi-Fi antenna.
  • No integrated graphics support
    ASRock Fatal1ty X99X Killer does not support integrated graphics, while the average motherboard does. 89.4% of motherboards support integrated graphics.
    What it is: Shows whether the motherboard can output video from CPUs that include integrated graphics.
    When it matters: When you want video output without installing a graphics card.

    Importance: MEDIUM

    ASRock Fatal1ty X99X Killer does not support integrated graphics, while the average motherboard does. 89.4% of motherboards support integrated graphics.
Total
Overall
Platform & Features
Memory
Storage
Ports & USB
Network
Power & Cooling

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Third-party reviews

United Kingdom
amazon
3.9
8 Reviews
United States
Amazon_logo.png
3.9
8 Reviews

(Reviews last updated: May 2026)

What customers like about ASRock Fatal1ty X99X Killer?

  • Competitive pricing for the X99 platform, offering high-end features at a mid-range or budget-friendly cost
  • Robust 12-phase power delivery (Digi Power) and high-quality components like Nichicon 12K Platinum caps
  • User-friendly and feature-packed UEFI BIOS that is easy to navigate
  • Excellent storage options including ten SATA3 ports and Ultra M.2 support
  • Strong networking capabilities with dual Gigabit LAN (Intel and Killer NIC)
  • High-quality onboard audio (Purity Sound 2) with Realtek ALC1150 and dedicated capacitors
  • Useful physical features for enthusiasts, such as Power/Reset buttons and a Dr. Debug LED display

What customers dislike about ASRock Fatal1ty X99X Killer?

  • Recovery from failed overclocks can be inconsistent, occasionally requiring a manual reboot to clear debug errors (e.g., error '6D')
  • Audio solution lacks Dolby Digital Live licensing, utilizing DTS instead, which may disappoint some gamers
  • The BIOS interface may require a slight learning curve for users coming from other major brands due to the layout of certain settings
  • Some users reported boot failure issues or sensitivity to power supply/battery health in specific instances
  • Limited PCIe lane availability for peripherals if using lower-end CPUs (e.g., 28-lane processors)

Video reviews

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