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ASUS X99 A Review | 107 Data compared

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  • Avg. price: ~£270
  • CPU socket: LGA 2011-3
  • Chipset: Intel X99
  • Form factor: ATX

ASUS X99 A review. Compare 107 technical specifications and user reviews to see how it ranks among motherboards and if it is worth buying.

5.5

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%

6.9

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%

5.7

Memory

16.0%

5.9

Platform & Features

16.0%

4.9

Storage

15.0%

5.2

Network

13.0%

5.0

Ports & USB

8.0%

3.4

Expansion

8.0%

4.7

Power & Cooling

5.0%

8.4

Audio

Good
6.9

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%

7.6

User reviews

30.0%

5.2

Popularity

User score:
United Kingdom
amazon
3.8
(89)
United States
Amazon_logo.png
3.8
(97)

(Reviews last updated: May 2026)

Good
  • 3.5
    Gaming

    Score components:

    28.0%

    5.2

    VRM phases

    22.0%

    3.3

    N. of M.2 sockets

    18.0%

    4.6

    LAN speed

    17.0%

    1.8

    Maximum RAM speed

    15.0%

    1.0

    N. of PCIe 5.0 x16 slots

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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 ASUS X99-A is an ATX motherboard featuring the LGA 2011-v3 socket and Intel X99 chipset, designed for Haswell-E and Broadwell-E processors with support for up to 64GB of quad-channel DDR4 memory at speeds reaching 3200MHz (OC). Key characteristics include the patent-pending OC Socket for enhanced overclocking stability, 5-Way Optimization for one-click system tuning, and robust storage options such as a 32Gb/s M.2 x4 slot and SATA Express. Main pros include its support for 3-way SLI/CrossFireX configurations, premium Crystal Sound 2 audio, and a highly responsive UEFI BIOS that appeals to enthusiasts on a budget. However, notable cons include the lack of integrated Wi-Fi or Bluetooth, limited bandwidth sharing that disables the fourth PCIe slot when an M.2 drive is used, and a simplified I/O compared to higher-end Deluxe models.

Technical Specifications of ASUS X99 A

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%

5.7

Memory

16.0%

5.9

Platform & Features

16.0%

4.9

Storage

15.0%

5.2

Network

13.0%

5.0

Ports & USB

8.0%

3.4

Expansion

8.0%

4.7

Power & Cooling

5.0%

8.4

Audio

5.3
ASUS X99 A has a technical score of 5.31 points, which is lower than that of 72.7% 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%

7.6

User reviews

30.0%

5.2

Popularity

User score:
United Kingdom
amazon
3.8
(89)
United States
Amazon_logo.png
3.8
(97)

(Reviews last updated: May 2026)

6.9
ASUS X99 A has a user score of 6.88 points, which is lower than that of 81.3% 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.
5.2
ASUS X99 A has a popularity of 5.2 points, which is higher than 57.5% 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%

5.5

Overall score

40.0%

9.1

Price

6.6
ASUS X99 A 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

Asus
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
ASUS X99 A 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.
Also described as ASUS OC Socket.
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
ASUS X99 A 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
ASUS X99 A 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
ASUS X99 A 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
ASUS X99 A 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

64 GB
ASUS X99 A 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
ASUS X99 A supports 4 memory channels, which is more than 92.8% of motherboards and equal to 6.9% of motherboards.
some CPUs use only 2 channels
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

2,133 MT/s
ASUS X99 A supports memory speeds up to 2133 MT/s, which is lower than that of 86.9% of motherboards and equal to that of 4.5% 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
ASUS X99 A 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
ASUS X99 A offers 1x PCIe 3.0x4 for M.2 slot interfaces, which is slower than that of 72.5% of motherboards and equal to that of 1.2% 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

?
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
ASUS X99 A 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

yes
ASUS X99 A supports NVMe RAID. 40.3% 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
ASUS X99 A 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
ASUS X99 A 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
ASUS X99 A 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/x16/x0, x16/x8/x4, x16/x8/x0, x16/x0/x0
ASUS X99 A uses x16/x16/x8, x16/x16/x0, x16/x8/x4, x16/x8/x0, x16/x0/x0 for PCIe slot electrical configuration, which is more flexible than that of 95.2% 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

no
ASUS X99 A does not support PCIe bifurcation. 61% of motherboards support this feature.
Requires BIOS mod.
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

10
ASUS X99 A has 10 USB ports (rear I/O), which is more than 75.6% of motherboards and equal to 15.7% 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

18
ASUS X99 A has 18 USB ports (including headers), which is more than 82.9% of motherboards and equal to 4.8% 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
ASUS X99 A 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
ASUS X99 A 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
ASUS X99 A 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
ASUS X99 A 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
ASUS X99 A uses the Intel I218-V LAN controller, which is less advanced than that of 60.1% of motherboards and equal to that of 2.7% of motherboards.
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

1
ASUS X99 A has 1 RJ45 ports, which is equal to 85.6% 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
ASUS X99 A 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
ASUS X99 A 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
ASUS X99 A 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

112 dB
ASUS X99 A has an audio SNR of 112 dB, which is lower than that of 53.7% of motherboards and equal to that of 2.1% 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
ASUS X99 A supports a headphone amp. 37% of motherboards support this feature.
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
ASUS X99 A 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

8
ASUS X99 A has 8 VRM phases, which is fewer than 71.9% of motherboards and equal to 6.3% 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
ASUS X99 A 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

6
ASUS X99 A 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

no
ASUS X99 A does not have a pump header. 77% 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

1 A
ASUS X99 A supports up to 1 A on the pump header, which is lower than that of 58.4% of motherboards and equal to that of 15.9% of motherboards.
Show more

ASUS X99 A vs the average motherboard

  • 4 more memory slots
    ASUS X99 A 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

    ASUS X99 A has more memory slots than the average motherboard (8 vs 4). The average motherboard has 4 memory slot/s.8 vs 4
  • 2 more rear USB ports
    ASUS X99 A has more rear USB ports than the average motherboard (10 vs 8). The average motherboard has 8 rear USB port/s.
    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

    ASUS X99 A has more rear USB ports than the average motherboard (10 vs 8). The average motherboard has 8 rear USB port/s.10 vs 8
  • More flexible PCIe lane configuration
    ASUS X99 A has more flexible PCIe lane configuration than the average motherboard (x16/x16/x8, x16/x16/x0, x16/x8/x4, x16/x8/x0, x16/x0/x0 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

    ASUS X99 A has more flexible PCIe lane configuration than the average motherboard (x16/x16/x8, x16/x16/x0, x16/x8/x4, x16/x8/x0, x16/x0/x0 vs x16/x1). The average motherboard uses x16/x1 PCIe slot lane configuration.x16/x16/x8, x16/x16/x0, x16/x8/x4, x16/x8/x0, x16/x0/x0 vs x16/x1
  • 3 more total USB connections
    ASUS X99 A has more total USB connections than the average motherboard (18 vs 15). The average motherboard has 15 total USB connections.
    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

    ASUS X99 A has more total USB connections than the average motherboard (18 vs 15). The average motherboard has 15 total USB connections.18 vs 15
  • 1 more USB 3.2 Gen1 headers
    ASUS X99 A 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

    ASUS X99 A 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
  • 1 more PCIe 2.0x16 slots
    ASUS X99 A has more PCIe 2.0x16 slots than the average motherboard (1 vs 0). The average motherboard has 0 PCIe 2.0x16 slot/s.
    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

    ASUS X99 A 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
  • 1 more USB4 or Thunderbolt headers
    ASUS X99 A has more USB4 or Thunderbolt headers than the average motherboard (1 vs 0). The average motherboard has 0 USB4 or Thunderbolt header/s.
    What it is: The number of internal USB4 or Thunderbolt headers on the motherboard.
    When it matters: When you plan to add high-speed front USB-C or Thunderbolt connections.

    Importance: MEDIUM

    ASUS X99 A has more USB4 or Thunderbolt headers than the average motherboard (1 vs 0). The average motherboard has 0 USB4 or Thunderbolt header/s.1 vs 0
  • 2 more USB 3.2 Gen1 ports
    ASUS X99 A 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.
    What it is: The number of rear USB 3.2 Gen1 Type-A ports on the motherboard.
    When it matters: When you want more standard USB ports with faster transfer speeds.

    Importance: MEDIUM

    Good value: >=4

    ASUS X99 A 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.6 vs 4
  • Broader Windows support
    ASUS X99 A has broader Windows support than the average motherboard (Windows 11, Windows 10, Windows 8.1, Windows 8, Windows 7 vs Windows 11, Windows 10). The average motherboard supports Windows 11, Windows 10.
  • Includes onboard power button
    ASUS X99 A has an onboard power button, while the average motherboard does not. 27.7% of motherboards include an onboard power button.
  • Includes onboard reset button
    ASUS X99 A has an onboard reset button, while the average motherboard does not. 27.6% of motherboards include an onboard reset button.
  • 4 more memory slots
    ASUS X99 A has more memory slots than the average motherboard (8 vs 4). The average motherboard has 4 memory slot/s.
  • More memory channels
    ASUS X99 A has more memory channels than the average motherboard (4 vs 2). The average motherboard has 2 memory channel/s.
  • More flexible PCIe lane configuration
    ASUS X99 A has more flexible PCIe lane configuration than the average motherboard (x16/x16/x8, x16/x16/x0, x16/x8/x4, x16/x8/x0, x16/x0/x0 vs x16/x1). The average motherboard uses x16/x1 PCIe slot lane configuration.
  • 1 more PCIe 2.0x16 slots
    ASUS X99 A 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 PCIe x1 slots
    ASUS X99 A 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
    ASUS X99 A has more PCIe 3.0x16 slots than the average motherboard (3 vs 1). The average motherboard has 1 PCIe 3.0x16 slot/s.
  • 2 more rear USB ports
    ASUS X99 A has more rear USB ports than the average motherboard (10 vs 8). The average motherboard has 8 rear USB port/s.
  • 3 more total USB connections
    ASUS X99 A has more total USB connections than the average motherboard (18 vs 15). The average motherboard has 15 total USB connections.
  • 1 more USB 3.2 Gen1 headers
    ASUS X99 A 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.
  • 1 more USB4 or Thunderbolt headers
    ASUS X99 A has more USB4 or Thunderbolt headers than the average motherboard (1 vs 0). The average motherboard has 0 USB4 or Thunderbolt header/s.
  • 2 more USB 3.2 Gen1 ports
    ASUS X99 A 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.
  • 2 more USB 2.0 ports
    ASUS X99 A 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 fan headers
    ASUS X99 A has more fan headers than the average motherboard (6 vs 5). The average motherboard has 5 fan header/s.

Total
Platform & Features
Memory
Expansion
Ports & USB
Power & Cooling
  • More basic motherboard chipset
    ASUS X99 A has more basic motherboard chipset than the average motherboard (Intel X99 vs Intel B860). The average motherboard uses Intel B860 chipset.
  • No integrated graphics support
    ASUS X99 A does not support integrated graphics, while the average motherboard does. 89.4% of motherboards support integrated graphics.
  • Not ready for Windows 11
    ASUS X99 A 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
    ASUS X99 A 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
    ASUS X99 A has fewer maximum memory capacity than the average motherboard (64 GB vs 128 GB). The average motherboard supports 128 GB of memory.
  • 53.6% lower maximum RAM speed
    ASUS X99 A has a lower maximum RAM speed than the average motherboard (2,133 MT/s vs 4,600 MT/s). The average motherboard supports RAM speed of 4,600 MT/s.
  • 35.1% lower overclocked RAM speed
    ASUS X99 A has a lower overclocked RAM speed than the average motherboard (3,200 MT/s vs 4,933 MT/s). The average motherboard supports overclocked RAM speed of 4,933 MT/s.
    top speed depends on CPU and memory setup
  • Slower M.2 slot interfaces
    ASUS X99 A has slower M.2 slot interfaces than the average motherboard (1x PCIe 3.0x4 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.
  • 1 fewer M.2 sockets
    ASUS X99 A has fewer M.2 sockets than the average motherboard (1 vs 2). The average motherboard has 2 M.2 socket/s.
  • No PCIe bifurcation support
    ASUS X99 A does not support PCIe bifurcation, while the average motherboard does. 61% of motherboards support PCIe bifurcation.
    Requires BIOS mod.
  • 1 fewer rear USB-C ports
    ASUS X99 A 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
    ASUS X99 A 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
    ASUS X99 A has fewer DisplayPort outputs than the average motherboard (0 vs 1). The average motherboard has 1 DisplayPort outputs.
  • 1 fewer total USB-C connections
    ASUS X99 A 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
    ASUS X99 A has fewer HDMI outputs than the average motherboard (0 vs 1). The average motherboard has 1 HDMI outputs.
  • 60% lower LAN speed
    ASUS X99 A 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
    ASUS X99 A does not include a Wi-Fi antenna, while the average motherboard does. 51.1% of motherboards include a Wi-Fi antenna.
  • 3 dB lower audio SNR
    ASUS X99 A has a lower audio SNR than the average motherboard (112 dB vs 115 dB). The average motherboard has audio SNR of 115 dB.
  • 2 fewer ARGB headers
    ASUS X99 A has fewer ARGB headers than the average motherboard (0 vs 2). The average motherboard has 2 ARGB header/s.
  • No pump header
    ASUS X99 A does not have a pump header, while the average motherboard does. 77% of motherboards include a pump header.
  • Fewer VRM phases
    ASUS X99 A has fewer VRM phases than the average motherboard (8 vs 10). The average motherboard has 10 VRM phase/s.
  • No onboard RGB lighting
    ASUS X99 A does not have onboard RGB lighting, while the average motherboard does. 50.3% of motherboards include onboard RGB lighting.
  • 1 fewer RGB headers
    ASUS X99 A has fewer RGB headers than the average motherboard (0 vs 1). The average motherboard has 1 RGB header/s.
  • 1 A lower pump header current limit
    ASUS X99 A has a lower pump header current than the average motherboard (1 A vs 2 A). The average motherboard provides pump header current of 2 A.
  • More basic motherboard chipset
    ASUS X99 A 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

    ASUS X99 A 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
    ASUS X99 A 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

    ASUS X99 A 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
    ASUS X99 A has slower M.2 slot interfaces than the average motherboard (1x PCIe 3.0x4 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

    ASUS X99 A has slower M.2 slot interfaces than the average motherboard (1x PCIe 3.0x4 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 vs 1x PCIe 5.0x4, 2x PCIe 4.0x4
  • 50% less maximum memory capacity
    ASUS X99 A 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

    ASUS X99 A 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
    ASUS X99 A 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

    ASUS X99 A 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 PCIe bifurcation support
    ASUS X99 A does not support PCIe bifurcation, while the average motherboard does. 61% of motherboards support PCIe bifurcation.
    Requires BIOS mod.
    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

    ASUS X99 A does not support PCIe bifurcation, while the average motherboard does. 61% of motherboards support PCIe bifurcation.
  • 1 fewer rear USB-C ports
    ASUS X99 A 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

    ASUS X99 A 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
    ASUS X99 A 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

    ASUS X99 A does not include a Wi-Fi antenna, while the average motherboard does. 51.1% of motherboards include a Wi-Fi antenna.
Total
Overall
Platform & Features
Memory
Storage
Expansion
Ports & USB
Network
Audio
Power & Cooling

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Third-party reviews

United Kingdom
amazon
3.8
89 Reviews
United States
Amazon_logo.png
3.8
97 Reviews

(Reviews last updated: May 2026)

What customers like about ASUS X99 A?

  • Excellent value for an entry-level X99 platform motherboard
  • High-end overclocking capabilities for both CPU and memory
  • Patent-pending OC Socket provides enhanced voltage regulation and performance
  • Comprehensive and user-friendly UEFI BIOS interface
  • Solid build quality using high-end components
  • Attractive black and white aesthetic that fits many builds
  • Rich feature set including M.2 x4, SATA Express, and Crystal Sound 2 audio
  • Effective AI Suite 3 software for Windows-based system tuning

What customers dislike about ASUS X99 A?

  • Lack of built-in Wi-Fi and Bluetooth modules
  • Absence of an onboard dedicated CMOS reset button
  • Boot times can be longer than some competitors
  • Limited RAID support (only 6 out of 10 SATA ports are RAID-capable)
  • Some users reported initial stability issues requiring immediate BIOS updates
  • Certain physical switches for EPU/TPU could have been integrated into BIOS
  • Potential clearance issues with large GPUs in the primary PCIe slot

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