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ASUS Sabertooth X99 Review | 107 Data compared

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  • Avg. price in UK: ~£340
  • Avg. price in US: ~$310
  • CPU socket: LGA 2011-3
  • Chipset: Intel X99
  • Form factor: ATX

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

5.9

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%

5.7

Technical Score

10.0%

7.5

User score

Good
5.7

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%

5.8

Platform & Features

16.0%

4.6

Storage

15.0%

5.3

Network

13.0%

6.0

Ports & USB

8.0%

5.4

Expansion

8.0%

6.9

Power & Cooling

5.0%

8.4

Audio

Good
7.5

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%

8.2

User reviews

30.0%

6.0

Popularity

User score:
United Kingdom
amazon
4.0
(134)
United States
Amazon_logo.png
4.1
(135)

(Reviews last updated: May 2026)

Very good
  • 3.7
    Gaming

    Score components:

    28.0%

    6.3

    VRM phases

    22.0%

    3.3

    N. of M.2 sockets

    18.0%

    4.6

    LAN speed

    17.0%

    2.1

    Maximum RAM speed

    15.0%

    0.0

    N. of PCIe 5.0 x16 slots

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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 ASUS Sabertooth X99 is an ATX motherboard built for the Intel LGA 2011-v3 socket, supporting Core i7 and Xeon E5 v3/v4 processors with quad-channel DDR4 memory up to 64GB and speeds beyond 3200MHz. Known for its 'TUF' durability, it features a signature Thermal Armor with a dedicated cooling fan, a metal TUF Fortifier backplate for rigidity, and a high-performance OC Socket with extra pins for enhanced overclocking stability. Key pros include its extensive 11 fan connectors with Thermal Radar 2 management, built-in USB 3.1 ports, and a robust 5-year warranty reflecting its server-grade testing and military-spec components. On the downside, the M.2 slot is buried under the armor which can lead to thermal throttling, and some users have reported bugs with the TUF Detective mobile app and occasional instability with the ASMedia USB 3.1 ports.

Technical Specifications of ASUS Sabertooth X99

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%

5.8

Platform & Features

16.0%

4.6

Storage

15.0%

5.3

Network

13.0%

6.0

Ports & USB

8.0%

5.4

Expansion

8.0%

6.9

Power & Cooling

5.0%

8.4

Audio

5.7
ASUS Sabertooth X99 has a technical score of 5.73 points, which is lower than that of 63.5% 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%

8.2

User reviews

30.0%

6.0

Popularity

User score:
United Kingdom
amazon
4.0
(134)
United States
Amazon_logo.png
4.1
(135)

(Reviews last updated: May 2026)

7.5
ASUS Sabertooth X99 has a user score of 7.55 points, which is lower than that of 62.3% 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.
6.0
ASUS Sabertooth X99 has a popularity of 6 points, which is higher than 63.5% 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%

5.9

Overall score

40.0%

8.7

Price

6.8
ASUS Sabertooth X99 has a quality-to-price ratio of 6.8 points, which is lower than 69.3% 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 Sabertooth X99 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 Sabertooth X99 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 Sabertooth X99 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 Sabertooth X99 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 Sabertooth X99 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 Sabertooth X99 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 Sabertooth X99 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

2,400 MT/s
ASUS Sabertooth X99 supports memory speeds up to 2400 MT/s, which is lower than that of 83.7% of motherboards and equal to that of 3.2% 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
ASUS Sabertooth X99 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 Sabertooth X99 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

8
ASUS Sabertooth X99 has 8 SATA 3 connectors, which is more than 85.5% of motherboards and equal to 11.2% of motherboards.
some SATA ports disabled with certain M.2 use
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 Sabertooth X99 supports RAID levels 0/1/5/10, which is broader than 31.8% of motherboards and equal to 68.2% of motherboards.
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
ASUS Sabertooth X99 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

N/A
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 Sabertooth X99 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 Sabertooth X99 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/x0/x8, x8/x8/x8, x16/x0/x4, x8/x8/x4
ASUS Sabertooth X99 uses x16/x0/x8, x8/x8/x8, x16/x0/x4, x8/x8/x4 for PCIe slot electrical configuration, which is more flexible than that of 85.1% 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
ASUS Sabertooth X99 supports PCIe bifurcation. 39.1% of motherboards support this feature.
x8/x8, x8/x4/x4.
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 Sabertooth X99 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 Sabertooth X99 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 Sabertooth X99 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 Sabertooth X99 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 Sabertooth X99 has 0 USB 3.2 Gen2x2 ports (USB-C), which is equal to 81.6% of motherboards.
10Gbps excluded.
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 Sabertooth X99 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.
dual 1GbE ports
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

Realtek RTL8111GR + Realtek RTL8111G + Intel I218-V
ASUS Sabertooth X99 uses the Realtek RTL8111GR + Realtek RTL8111G + Intel I218-V LAN controller, which is less advanced than that of 72.3% of motherboards and equal to that of 0.2% 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

2
ASUS Sabertooth X99 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
ASUS Sabertooth X99 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 Sabertooth X99 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 Sabertooth X99 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 Sabertooth X99 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 Sabertooth X99 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 Sabertooth X99 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+2+2
ASUS Sabertooth X99 has 8+2+2 VRM phases, which is more than 50.8% of motherboards and equal to 0.7% 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

2
ASUS Sabertooth X99 has 2 CPU power connectors, which is more than 54.6% of motherboards and equal to 45.3% 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

11
ASUS Sabertooth X99 has 11 fan headers, which is more than 99.6% of motherboards and equal to 0.3% 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
ASUS Sabertooth X99 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

1 A
ASUS Sabertooth X99 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 Sabertooth X99 vs the average motherboard

  • 4 more memory slots
    ASUS Sabertooth X99 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 Sabertooth X99 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 Sabertooth X99 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 Sabertooth X99 has more rear USB ports than the average motherboard (10 vs 8). The average motherboard has 8 rear USB port/s.10 vs 8
  • 1 more RJ45 ports
    ASUS Sabertooth X99 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

    ASUS Sabertooth X99 has more RJ45 ports than the average motherboard (2 vs 1). The average motherboard has 1 RJ45 port/s.2 vs 1
  • 6 more fan headers
    ASUS Sabertooth X99 has more fan headers than the average motherboard (11 vs 5). The average motherboard has 5 fan header/s.
    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

    ASUS Sabertooth X99 has more fan headers than the average motherboard (11 vs 5). The average motherboard has 5 fan header/s.11 vs 5
  • 1 more CPU power connectors
    ASUS Sabertooth X99 has more CPU power connectors than the average motherboard (2 vs 1). The average motherboard has 1 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

    ASUS Sabertooth X99 has more CPU power connectors than the average motherboard (2 vs 1). The average motherboard has 1 CPU power connectors.2 vs 1
  • 1 more PCIe x4 slots
    ASUS Sabertooth X99 has more PCIe x4 slots than the average motherboard (1 vs 0). The average motherboard has 0 PCIe x4 slot/s.
    What it is: The number of PCIe x4 slots on the motherboard.
    When it matters: When you need more mid-bandwidth expansion slots.

    Importance: MEDIUM

    ASUS Sabertooth X99 has more PCIe x4 slots than the average motherboard (1 vs 0). The average motherboard has 0 PCIe x4 slot/s.1 vs 0
  • More flexible PCIe lane configuration
    ASUS Sabertooth X99 has more flexible PCIe lane configuration than the average motherboard (x16/x0/x8, x8/x8/x8, x16/x0/x4, x8/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

    ASUS Sabertooth X99 has more flexible PCIe lane configuration than the average motherboard (x16/x0/x8, x8/x8/x8, x16/x0/x4, x8/x8/x4 vs x16/x1). The average motherboard uses x16/x1 PCIe slot lane configuration.x16/x0/x8, x8/x8/x8, x16/x0/x4, x8/x8/x4 vs x16/x1
  • 3 more total USB connections
    ASUS Sabertooth X99 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 Sabertooth X99 has more total USB connections than the average motherboard (18 vs 15). The average motherboard has 15 total USB connections.18 vs 15
  • 4 more memory slots
    ASUS Sabertooth X99 has more memory slots than the average motherboard (8 vs 4). The average motherboard has 4 memory slot/s.
  • More memory channels
    ASUS Sabertooth X99 has more memory channels than the average motherboard (4 vs 2). The average motherboard has 2 memory channel/s.
  • 4 more SATA 3 connectors
    ASUS Sabertooth X99 has more SATA 3 connectors than the average motherboard (8 vs 4). The average motherboard has 4 SATA 3 connectors.
  • 1 more PCIe x4 slots
    ASUS Sabertooth X99 has more PCIe x4 slots than the average motherboard (1 vs 0). The average motherboard has 0 PCIe x4 slot/s.
  • More flexible PCIe lane configuration
    ASUS Sabertooth X99 has more flexible PCIe lane configuration than the average motherboard (x16/x0/x8, x8/x8/x8, x16/x0/x4, x8/x8/x4 vs x16/x1). The average motherboard uses x16/x1 PCIe slot lane configuration.
  • 2 more PCIe 3.0x16 slots
    ASUS Sabertooth X99 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 Sabertooth X99 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 Sabertooth X99 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 Sabertooth X99 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 USB 3.2 Gen2 ports
    ASUS Sabertooth X99 has more USB 3.2 Gen2 ports than the average motherboard (2 vs 1). The average motherboard has 1 USB 3.2 Gen2 port/s.
  • 1 more USB4 or Thunderbolt headers
    ASUS Sabertooth X99 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 2.0 ports
    ASUS Sabertooth X99 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
    ASUS Sabertooth X99 has more RJ45 ports than the average motherboard (2 vs 1). The average motherboard has 1 RJ45 port/s.
  • 6 more fan headers
    ASUS Sabertooth X99 has more fan headers than the average motherboard (11 vs 5). The average motherboard has 5 fan header/s.
  • 1 more CPU power connectors
    ASUS Sabertooth X99 has more CPU power connectors than the average motherboard (2 vs 1). The average motherboard has 1 CPU power connectors.

Total
Memory
Storage
Expansion
Ports & USB
Network
Power & Cooling
  • More basic motherboard chipset
    ASUS Sabertooth X99 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 Sabertooth X99 does not support integrated graphics, while the average motherboard does. 89.4% of motherboards support integrated graphics.
  • Not ready for Windows 11
    ASUS Sabertooth X99 is not ready for Windows 11, while the average motherboard is. 77.1% of motherboards are ready for Windows 11.
  • Narrower Windows support
    ASUS Sabertooth X99 has narrower Windows support than the average motherboard (Windows 10, Windows 8.1, Windows 8, Windows 7 vs Windows 11, Windows 10). The average motherboard supports Windows 11, Windows 10.
  • 6 years older release date
    ASUS Sabertooth X99 is older than the average motherboard (2,015 vs 2,021). The average motherboard was released in 2,021.
    April 2015
  • 50% less maximum memory capacity
    ASUS Sabertooth X99 has fewer maximum memory capacity than the average motherboard (64 GB vs 128 GB). The average motherboard supports 128 GB of memory.
  • 47.8% lower maximum RAM speed
    ASUS Sabertooth X99 has a lower maximum RAM speed than the average motherboard (2,400 MT/s vs 4,600 MT/s). The average motherboard supports RAM speed of 4,600 MT/s.
  • 33.1% lower overclocked RAM speed
    ASUS Sabertooth X99 has a lower overclocked RAM speed than the average motherboard (3,300 MT/s vs 4,933 MT/s). The average motherboard supports overclocked RAM speed of 4,933 MT/s.
  • Slower M.2 slot interfaces
    ASUS Sabertooth X99 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.
  • No NVMe RAID support
    ASUS Sabertooth X99 does not support NVMe RAID, while the average motherboard does. 59.8% of motherboards support NVMe RAID.
  • 1 fewer M.2 sockets
    ASUS Sabertooth X99 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
    ASUS Sabertooth X99 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 DisplayPort outputs
    ASUS Sabertooth X99 has fewer DisplayPort outputs than the average motherboard (0 vs 1). The average motherboard has 1 DisplayPort outputs.
  • 1 fewer PS/2 ports
    ASUS Sabertooth X99 has fewer PS/2 ports than the average motherboard (0 vs 1). The average motherboard has 1 PS/2 port/s.
  • 1 fewer total USB-C connections
    ASUS Sabertooth X99 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 Sabertooth X99 has fewer HDMI outputs than the average motherboard (0 vs 1). The average motherboard has 1 HDMI outputs.
  • 60% lower LAN speed
    ASUS Sabertooth X99 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.
    dual 1GbE ports
  • 3 dB lower audio SNR
    ASUS Sabertooth X99 has a lower audio SNR than the average motherboard (112 dB vs 115 dB). The average motherboard has audio SNR of 115 dB.
  • More basic chipset cooling
    ASUS Sabertooth X99 has more basic chipset cooling than the average motherboard (active vs Passive). The average motherboard uses Passive chipset cooling.
  • 2 fewer ARGB headers
    ASUS Sabertooth X99 has fewer ARGB headers than the average motherboard (0 vs 2). The average motherboard has 2 ARGB header/s.
  • No onboard RGB lighting
    ASUS Sabertooth X99 does not have onboard RGB lighting, while the average motherboard does. 50.3% of motherboards include onboard RGB lighting.
  • 1 fewer RGB headers
    ASUS Sabertooth X99 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 Sabertooth X99 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 Sabertooth X99 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 Sabertooth X99 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 Sabertooth X99 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.
    dual 1GbE ports
    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 Sabertooth X99 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 Sabertooth X99 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 Sabertooth X99 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
  • No NVMe RAID support
    ASUS Sabertooth X99 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

    ASUS Sabertooth X99 does not support NVMe RAID, while the average motherboard does. 59.8% of motherboards support NVMe RAID.
  • 50% less maximum memory capacity
    ASUS Sabertooth X99 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 Sabertooth X99 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 Sabertooth X99 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 Sabertooth X99 has fewer M.2 sockets than the average motherboard (1 vs 2). The average motherboard has 2 M.2 socket/s.1 vs 2
  • 1 fewer rear USB-C ports
    ASUS Sabertooth X99 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 Sabertooth X99 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 integrated graphics support
    ASUS Sabertooth X99 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

    ASUS Sabertooth X99 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
Audio
Power & Cooling

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Third-party reviews

United Kingdom
amazon
4.0
134 Reviews
United States
Amazon_logo.png
4.1
135 Reviews

(Reviews last updated: May 2026)

What customers like about ASUS Sabertooth X99?

  • High build quality with military-grade TUF components and server-level testing for long-term reliability
  • Comprehensive 5-year warranty which is longer than the standard 3 years offered by competitors
  • Thermal Armor and Fortifier backplate provide excellent board rigidity and dust protection
  • Stable overclocking performance aided by the specialized 'OC Socket' and 8+2 power phase design
  • Extensive cooling options with up to 11 fan headers and Thermal Radar 2 for precise control
  • Advanced storage support including dual SATA Express, M.2 (NVMe), and high-speed USB 3.1
  • User-friendly UEFI BIOS that is highly intuitive for both beginners and enthusiasts

What customers dislike about ASUS Sabertooth X99?

  • High price point compared to entry-level X99 boards, making it less ideal for budget-conscious builders
  • Lacks built-in Wi-Fi and Bluetooth, which are often expected at this price range
  • M.2 slot is hidden under the Thermal Armor, which can lead to overheating for some high-speed drives
  • Missing physical on-board power and reset buttons, commonly found on other enthusiast-grade boards
  • Initial BIOS settings occasionally cause USB 3.0 initialization issues with keyboards and mice
  • Mixed reliability for the 'TUF Detective' mobile diagnostic feature and some software bugs in AISuite

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