Scored using Motherboards Methodology v3.0
Motherboards Methodology v3.0
Mathematical & Unbiased Scoring
Products in this category are scored under Frontum Motherboards Methodology v3.0: the technical score from the specifications is the base, and independent expert and video reviews (up to ±0.5 points), owner opinions (up to ±0.3) and best-of lists (up to +0.3) move it up or down.
Explore Motherboards Methodology v3.0

MSI X99A SLI review: 109 specs compared

Avg. price:~£150CPU socket:LGA 2011-3Chipset:Intel X99Form factor:ATX

MSI X99A SLI Review: Compare 109 technical specifications to see how this product ranks in the Motherboards category and whether it is worth buying.

MSI X99A SLI
6.7/10

Overall score

Score
6.7/ 10
✕
What it is
Our main score for this model, 1–10. It combines specs, expert reviews, best-of lists, owners and ratings from across the web.
How we count it
Parts: Technical score 40%, Reviews score 20%, List score 20%, Sentiment score 10%, User score 10%
Marks: Each part gets a mark out of 10. For reviews, lists and owners, a typical model in this category gets about 8 and the best one gets 10.
No data yet: A part with no data shows "?". It counts as the mark of a weaker model in this category (4 in 5 models with data score higher). This way, models with reviews, lists and owners usually come out ahead.
Score distribution
â–¼
<55-66-77-88-99-10
Score components

40%

5.3

Technical score

20%

?

Reviews scoreNot enough data yet, so we use 7.8, the mark of a weaker model in this category

20%

?

List scoreNot enough data yet, so we use 7.5, the mark of a weaker model in this category

10%

?

Sentiment scoreNot enough data yet, so we use 7.0, the mark of a weaker model in this category

10%

?

User scoreNot enough data yet, so we use 7.9, the mark of a weaker model in this category

â–¼Worse than 62% of motherboards
7.6

Value for money

Value for money
7.6/ 10
✕
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 distribution
â–¼
<55-66-77-88-99-10
Score components

70%

6.7

Overall score

30%

9.7

Price

â–¼Worse than 61%
5.3

Technical score

Technical score
5.3/ 10
✕
What it is
How good the specs are compared with the other models in this category, 1–10.
How we count it
Areas: We rate the specs in each area against the other models in this category.
Weighting: The areas that matter most to buyers count more. The shares are shown under Score components.
Share: The technical score is 40% of the overall score.
Score distribution
â–¼
<55-66-77-88-99-10
Score components

19%

6.9

Memory

16%

7.0

Platform

16%

4.4

Storage

15%

3.4

Network

13%

4.8

Ports

8%

3.4

Expansion

8%

4.8

Power & Cooling

5%

6.7

Audio

â–¼Worse than 68%
?

Reviews score

Reviews score
✕
What it is
Average grade from independent test sites, magazines and video reviewers, 1–10.
How we count it
Grades: Each review's own score is converted to 1–10; without one, we grade the review ourselves. Big test sites count more, short reviews half as much as full tests. A video review counts half.
Score: The average grade is 80% of the review mark; the number of reviews is the other 20% (1 review = 5, the typical number in this category = 8, the most-reviewed model = 10).
Enough data: With few reviews, the average grade is pulled toward the typical grade of this category. No reviews yet: 7.8 for now.
Share: Reviews count 20% of the overall score.
Score distribution
â–¼
<55-66-77-88-99-10
Grades by review (0)
We have not found an independent test of this model yet. Until we do, its review part counts as 7.8.
Ratings from across the web count in the User score, not in this score.
No expert tests yet
?

User score

User score
7.9/ 10
✕
What it is
How happy buyers are with this model, based on ratings from across the web.
How we count it
Enough data: A model needs at least 1 rating from across the web. Without one, it counts as 7.9, the mark of a weaker rated model in this category.
Share: User score counts 10% of the overall score.
Score distribution
â–¼
<55-66-77-88-99-10
No ratings from across the web yet, so it counts as 7.9, the mark of a weaker rated model in this category.
No ratings from across the web yet
?

List score

List score
7.5/ 10
✕
What it is
How often independent test sites, magazines and video reviewers put this model in their best-of lists for this category.
How we count it
Points: The model in the most lists of this category gets 10; the others get 8 to 10 in proportion. In no list yet: 7.5. Lists count 20% of the overall score.
Enough data: Every list counts, even a single one. With fewer than 5 best-of lists in the category, this part is left out.
Lists with this model (0)
Not in any best-of list yet, so this part counts as 7.5. Models in a list get 8 to 10.
Not in any best-of list yet
  • msi-x99a-sli
msi-x99a-sli
Where to buy
    N/A~ £150
Best rankings
Available: ranking among products currently available (including other versions of this product).All: ranking among all products in the database.
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Loading category ranking...

Technical Specifications of motherboard MSI X99A SLI

Technical score
Technical score
5.3/ 10
✕
What it is
How good the specs are compared with the other models in this category, 1–10.
How we count it
Areas: We rate the specs in each area against the other models in this category.
Weighting: The areas that matter most to buyers count more. The shares are shown under Score components.
Share: The technical score is 40% of the overall score.
Score distribution
â–¼
<55-66-77-88-99-10
Score components:

19%

6.9

Memory

16%

7.0

Platform

16%

4.4

Storage

15%

3.4

Network

13%

4.8

Ports

8%

3.4

Expansion

8%

4.8

Power & Cooling

5%

6.7

Audio

5.3
Reviews score
7.8
User score
?
List score
?
Value for money
Value for money
7.6/ 10
✕
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 distribution
â–¼
<55-66-77-88-99-10
Score components:

70%

6.7

Overall score

30%

9.7

Price

7.6
CPU socket
LGA 2011-3
This motherboard uses LGA 2011-3, which is less up-to-date than 84.4% of Motherboards and the same as 2.4% of Motherboards.
CPU platform
Intel
Chipset
Intel X99
This motherboard uses Intel X99, which is less capable than 67.9% of Motherboards and as capable as 2.3% of Motherboards.
Form factor
ATX
Integrated graphics support
no
This motherboard does not support integrated graphics. 89.9% of motherboards support this feature.
Show more
DDR memory version
DDR4
This motherboard uses DDR4, which is more modern than 13.4% of Motherboards and the same as 50.4% of Motherboards.
Memory slots
8
This motherboard has 8 Memory slots, which is more than 93.9% of motherboards and equal to 5.8% of motherboards.
Maximum memory capacity
128 GB
This motherboard supports up to 128 GB of memory, which is more than 40.1% of motherboards and equal to 31.9% of motherboards.
Memory channels
4
Maximum RAM speed
3,333 MT/s
This motherboard supports memory speeds up to 3,333 MT/s, which is lower than that of 61.8% of motherboards and equal to that of 0.6% of motherboards.
Show more
N. of M.2 sockets
1
This motherboard has 1 M.2 sockets, which is fewer than 69.5% of motherboards and equal to 18.9% of motherboards.
M.2 slot interface per slot
1x PCIe 3.0 x4/SATA
This motherboard offers M.2 slots: 1x PCIe 3.0x4/SATA, which is slower than 74.3% of Motherboards and the same as 10.4% of Motherboards.
N. of SATA 3 connectors
10
This motherboard has 10 SATA 3 connectors, which is more than 96.6% of motherboards and equal to 3.3% of motherboards.
Supported RAID levels
0/1/5/10
This motherboard RAID support: 0/1/5/10, which is more flexible than 32.5% of Motherboards and the same as 67.5% of Motherboards.
NVMe RAID support
no
This motherboard does not support NVMe RAID. 59.9% of motherboards support this feature.
Show more
N. of PCIe 5.0 x16 slots
0
This motherboard has 0 PCIe 5.0x16 slots, which is fewer than 31.6% of motherboards and equal to 68.4% of motherboards.
N. of PCIe 4.0 x16 slots
0
This motherboard has 0 PCIe 4.0x16 slots, which is fewer than 44.8% of motherboards and equal to 55.2% of motherboards.
N. of PCIe 3.0 x16 slots
3
This motherboard has 3 PCIe 3.0x16 slots, which is more than 82.7% of motherboards and equal to 11.1% of motherboards.
PCIe slot electrical configuration
x16/x16/x8
This motherboard splits its PCIe lanes as x16/x16/x8, which is more generous than 94.8% of Motherboards and the same as 0.6% of Motherboards.
PCIe bifurcation support
no
This motherboard does not support PCIe bifurcation. 59.8% of motherboards support this feature.
Show more
Total USB ports (rear I/O)
8
This motherboard has 8 USB ports (rear I/O), which is more than 40.6% of motherboards and equal to 30.3% of motherboards.
Total USB ports (including headers)
14
This motherboard has 14 USB ports (including headers), which is fewer than 52.3% of motherboards and equal to 12.4% of motherboards.
Total USB-C ports (rear I/O)
1
This motherboard has 1 USB-C ports (rear I/O), which is more than 35.8% of motherboards and equal to 48.3% of motherboards.
Total USB-C ports (including headers)
1
This motherboard has 1 USB-C ports (including headers), which is more than 30.5% of motherboards and equal to 21.1% of motherboards.
N. of USB 3.2 Gen2x2 ports (USB-C)
0
This motherboard has 0 USB 3.2 Gen2x2 ports (USB-C), which is fewer than 18% of motherboards and equal to 82% of motherboards.
Show more
LAN speed
1 Gbps
This motherboard supports LAN speeds up to 1 Gbps, which is lower than that of 51.1% of motherboards and equal to that of 48.9% of motherboards.
LAN controller
?
N. of RJ45 ports
1
This motherboard has 1 RJ45 ports, which is fewer than 14.4% of motherboards and equal to 85.6% of motherboards.
Wi-Fi connectivity
no
This motherboard does not support Wi-Fi connectivity. 50.1% of motherboards support this feature.
Wi-Fi version
N/A
Show more
Audio codec
Realtek ALC1150
This motherboard uses Realtek ALC1150, which is higher-end than 53% of Motherboards and the same as 9.1% of Motherboards.
Audio channels
7.1
This motherboard offers 7.1 audio channels, which is more than 4.7% of motherboards and equal to 95.3% of motherboards.
Audio SNR
95 dB
This motherboard has an audio SNR of 95 dB, which is lower than that of 82.7% of motherboards and equal to that of 10.5% of motherboards.
Headphone amp support
no
This motherboard does not support a headphone amp. 58.8% of motherboards support this feature.
N. of 3.5mm audio jacks
5
This motherboard has 5 3.5mm audio jacks, which is more than 50.6% of motherboards and equal to 36.3% of motherboards.
Show more
VRM phases
8
This motherboard has 8 VRM phases, which is fewer than 69.9% of motherboards and equal to 7.1% of motherboards.
N. of CPU power connectors
1
This motherboard has 1 CPU power connectors, which is fewer than 45.2% of motherboards and equal to 54.9% of motherboards.
N. of fan headers
5
This motherboard has 5 fan headers, which is fewer than 50% of motherboards and equal to 14.6% of motherboards.
Pump header
no
This motherboard does not have a pump header. 77.9% of motherboards include this feature.
Pump header max current
0 A
This motherboard supports up to 0 A on the pump header, which is lower than that of 76.2% of motherboards and equal to that of 23.8% of motherboards.
Show more

MSI X99A SLI vs the average motherboard

246810TotalPlatformMemoryStorageExpansionPortsNetworkAudioPower & Cooling
  • 4 more memory slots
    This motherboard has more memory slots than the average motherboard (8 vs 4). The average motherboard has 4 memory slot/s.
    8 vs 4
  • Includes dual BIOS
    This motherboard has dual BIOS, while the average motherboard does not. 22.4% of motherboards include dual BIOS.
  • 1 more USB 3.2 Gen2 USB-C ports
    This motherboard has more USB 3.2 Gen2 USB-C ports than the average motherboard (1 vs 0). The average motherboard has 0 USB 3.2 Gen2 USB-C port/s.
    1 vs 0
  • Includes POST code display
    This motherboard has a POST code display, while the average motherboard does not. 26.7% of motherboards include a POST code display.
  • 1 more U.2 sockets
    This motherboard has more U.2 sockets than the average motherboard (1 vs 0). The average motherboard has 0 U.2 socket/s.
    1 vs 0
  • 1 more USB 3.2 Gen1 headers
    This motherboard 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
    2 vs 1
  • 6 more SATA 3 connectors
    This motherboard has more SATA 3 connectors than the average motherboard (10 vs 4). The average motherboard has 4 SATA 3 connectors.
    10 vs 4
  • More generous lane split
    This motherboard splits its PCIe lanes more generously than the average motherboard (x16/x16/x8 vs x16/x0/x4, x8/x8/x4).
    x16/x16/x8 vs x16/x0/x4, x8/x8/x4
  • Includes dual BIOS
    This motherboard has dual BIOS, while the average motherboard does not. 22.4% of motherboards include dual BIOS.
  • Includes POST code display
    This motherboard has a POST code display, while the average motherboard does not. 26.7% of motherboards include a POST code display.
  • Rear-panel CMOS reset button
    This motherboard 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 methods
    This motherboard offers more BIOS update methods than the average motherboard (UEFI utility, flashback, Windows app, DOS vs UEFI utility, flashback, Windows app).
    UEFI utility, flashback, Windows app, DOS vs UEFI utility, flashback, Windows app
  • 4 more memory slots
    This motherboard has more memory slots than the average motherboard (8 vs 4). The average motherboard has 4 memory slot/s.
    8 vs 4
  • Supports ECC memory
    This motherboard supports ECC memory, while the average motherboard does not. 20.9% of motherboards support ECC memory.
    supports ECC RDIMM.
  • 1 more U.2 sockets
    This motherboard has more U.2 sockets than the average motherboard (1 vs 0). The average motherboard has 0 U.2 socket/s.
    1 vs 0
  • 6 more SATA 3 connectors
    This motherboard has more SATA 3 connectors than the average motherboard (10 vs 4). The average motherboard has 4 SATA 3 connectors.
    10 vs 4
  • More generous lane split
    This motherboard splits its PCIe lanes more generously than the average motherboard (x16/x16/x8 vs x16/x0/x4, x8/x8/x4).
    x16/x16/x8 vs x16/x0/x4, x8/x8/x4
  • 1 more PCIe x1 slots
    This motherboard has more PCIe x1 slots than the average motherboard (2 vs 1). The average motherboard has 1 PCIe x1 slot/s.
    2 vs 1
  • 2 more PCIe 3.0x16 slots
    This motherboard has more PCIe 3.0x16 slots than the average motherboard (3 vs 1). The average motherboard has 1 PCIe 3.0x16 slot/s.
    3 vs 1
  • 1 more USB 3.2 Gen2 USB-C ports
    This motherboard has more USB 3.2 Gen2 USB-C ports than the average motherboard (1 vs 0). The average motherboard has 0 USB 3.2 Gen2 USB-C port/s.
    1 vs 0
  • 1 more USB 3.2 Gen1 headers
    This motherboard 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
    2 vs 1
  • 2 more USB 3.2 Gen1 ports
    This motherboard 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
  • More capable onboard audio
    This motherboard has a higher-end audio codec than the average motherboard (Realtek ALC1150 vs Realtek ALC897).
    Realtek ALC1150 vs Realtek ALC897
  • 2 more 3.5mm audio jacks
    This motherboard has more 3.5mm audio jacks than the average motherboard (5 vs 3). The average motherboard has 3 3.5mm audio jacks.
    5 vs 3
  • More basic chipset
    This motherboard uses a more basic chipset than the average motherboard (Intel X99 vs Intel B860).
    Intel X99 vs Intel B860
  • 60% lower LAN speed
    This motherboard 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 NVMe storage slots
    This motherboard has slower M.2 slots than the average motherboard (1x PCIe 3x4/SATA vs 1x PCIe 5x4, 2x PCIe 4x4).
    1x PCIe 3.0x4/SATA vs 1x PCIe 5.0x4, 2x PCIe 4.0x4
  • No NVMe RAID support
    This motherboard does not support NVMe RAID, while the average motherboard does. 59.9% of motherboards support NVMe RAID.
  • No Wi-Fi connectivity
    This motherboard does not support Wi-Fi connectivity, while the average motherboard does. 50.1% of motherboards support Wi-Fi connectivity.
  • No BIOS flashback support
    This motherboard does not support BIOS flashback, while the average motherboard does. 51.3% of motherboards support BIOS flashback.
  • 1 fewer M.2 sockets
    This motherboard 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 Wi-Fi antenna included
    This motherboard does not include a Wi-Fi antenna, while the average motherboard does. 51.1% of motherboards include a Wi-Fi antenna.
  • More basic chipset
    This motherboard uses a more basic chipset than the average motherboard (Intel X99 vs Intel B860).
    Intel X99 vs Intel B860
  • No BIOS flashback support
    This motherboard does not support BIOS flashback, while the average motherboard does. 51.3% of motherboards support BIOS flashback.
  • No integrated graphics support
    This motherboard does not support integrated graphics, while the average motherboard does. 89.8% of motherboards support integrated graphics.
  • Not ready for Windows 11
    This motherboard is not ready for Windows 11, while the average motherboard is. 77.4% of motherboards are ready for Windows 11.
  • Narrower Windows support
    This motherboard supports a narrower range of Windows versions than the average motherboard (Windows 10, Windows 8.1, Windows 8, Windows 7 vs Windows 11, Windows 10).
    Windows 10, Windows 8.1, Windows 8, Windows 7 vs Windows 11, Windows 10
  • More dated socket
    This motherboard uses a more dated socket than the average motherboard (LGA 2011-3 vs LGA 1151).
    LGA 2,011-3 vs LGA 1,151
  • 29.1% lower maximum RAM speed
    This motherboard has a lower maximum RAM speed than the average motherboard (3,333 MT/s vs 4,699.5 MT/s). The average motherboard supports RAM speed of 4,699.5 MT/s.
    3,333 MT/s vs 4,699.5 MT/s
  • 33.3% lower overclocked RAM speed
    This motherboard has a lower overclocked RAM speed than the average motherboard (3,333 MT/s vs 5,000 MT/s). The average motherboard supports overclocked RAM speed of 5,000 MT/s.
    3,333 MT/s vs 5,000 MT/s
  • Slower NVMe storage slots
    This motherboard has slower M.2 slots than the average motherboard (1x PCIe 3x4/SATA vs 1x PCIe 5x4, 2x PCIe 4x4).
    1x PCIe 3.0x4/SATA vs 1x PCIe 5.0x4, 2x PCIe 4.0x4
  • No NVMe RAID support
    This motherboard does not support NVMe RAID, while the average motherboard does. 59.9% of motherboards support NVMe RAID.
  • 1 fewer M.2 sockets
    This motherboard 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
    This motherboard does not support PCIe bifurcation, while the average motherboard does. 59.7% of motherboards support PCIe bifurcation.
  • 1 fewer DisplayPort outputs
    This motherboard has fewer DisplayPort outputs than the average motherboard (0 vs 1). The average motherboard has 1 DisplayPort outputs.
    0 vs 1
  • 1 fewer total USB connections
    This motherboard has fewer total USB connections than the average motherboard (14 vs 15). The average motherboard has 15 total USB connections.
    14 vs 15
  • 60% lower LAN speed
    This motherboard 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 Wi-Fi connectivity
    This motherboard does not support Wi-Fi connectivity, while the average motherboard does. 50.1% of motherboards support Wi-Fi connectivity.
  • No Wi-Fi antenna included
    This motherboard does not include a Wi-Fi antenna, while the average motherboard does. 51.1% of motherboards include a Wi-Fi antenna.
  • 20 dB lower audio SNR
    This motherboard has a lower audio SNR than the average motherboard (95 dB vs 115 dB). The average motherboard has audio SNR of 115 dB.
    95 dB vs 115 dB
  • No headphone amp support
    This motherboard does not support a headphone amp, while the average motherboard does. 58.8% of motherboards support a headphone amp.
  • 2 fewer ARGB headers
    This motherboard has fewer ARGB headers than the average motherboard (0 vs 2). The average motherboard has 2 ARGB header/s.
    0 vs 2
  • No pump header
    This motherboard does not have a pump header, while the average motherboard does. 77.9% of motherboards include a pump header.
  • Fewer VRM phases
    This motherboard has fewer VRM phases than the average motherboard (8 vs 10). The average motherboard has 10 VRM phase/s.
    8 vs 10
  • 1 fewer RGB headers
    This motherboard has fewer RGB headers than the average motherboard (0 vs 1). The average motherboard has 1 RGB header/s.
    0 vs 1
  • 2 A lower pump header current limit
    This motherboard 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.
    0 A vs 2 A
  • 0.5 fewer fan headers
    This motherboard has fewer fan headers than the average motherboard (5 vs 5.5). The average motherboard has 5.5 fan header/s.
    5 vs 5.5

Video reviews

Hands-on testing, unboxing, and real-world video evaluations

Not graded

Third-party reviews

What customers like about MSI X99A SLI

  • Excellent value for money, often cited as one of the most affordable X99 motherboards available.
  • Solid build quality featuring 'Military Class 4' components and a clean, all-black aesthetic.
  • Comprehensive connectivity including USB 3.1 Gen2 (10Gb/s), Turbo M.2 (32Gb/s), and SATA Express.
  • Robust multi-GPU support for up to 3-way NVIDIA SLI or AMD CrossFire configurations.
  • User-friendly overclocking features like the physical 'OC Genie' button and a well-designed UEFI BIOS.
  • High memory capacity with 8 DIMM slots supporting up to 128GB of DDR4 RAM.

What customers don't like about MSI X99A SLI

  • Frequent reports of boot issues, including random failures to POST and debug boot loops.
  • Notable memory compatibility problems, particularly with high-speed G.Skill RAM sticks and XMP profiles.
  • Potential performance lagging or slow loading times when using NVMe M.2 drives.
  • Sharing of bandwidth means using the M.2 slot disables certain SATA ports.
  • Mixed feedback on cooling compatibility; some users found the built-in backplate interferes with standard air coolers.
  • Lacks premium integrated features like onboard Wi-Fi or Bluetooth compared to more expensive models.

Verdict

The MSI X99A SLI is an LGA 2011-3 socket motherboard built on the Intel X99 chipset, supporting Core i7 Extreme Edition processors and up to 128GB of quad-channel DDR4-3333 (OC) memory. Key specs include USB 3.1 Gen2 connectivity, Turbo M.2 (32Gb/s), SATA Express, and 4-Way NVIDIA SLI or AMD CrossFire support for high-end multi-GPU configurations. Its main pros are the Military Class 4 durability components and Guard-Pro protection for stable overclocking, though it lacks modern features like built-in Wi-Fi and integrated RGB lighting found on newer enthusiast boards.

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