OVERALL
ALTERNATIVES
SPECS
VS AVERAGE
REVIEWS
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 X99S Gaming 9 ACK review: 109 specs compared

Avg. price:~£380CPU socket:LGA 2011-3Chipset:Intel X99Form factor:E-ATX

MSI X99S Gaming 9 ACK Review: Compare 109 technical specifications and 1 expert and video reviews to see how this product ranks in the Motherboards category and whether it is worth buying.

MSI X99S Gaming 9 ACK
6.0/10

Overall score

Score
6.0/ 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
â–¼ Worse than 86% of models
Score components

40%

5.5

Technical score

20%

5.5

Reviews score

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%

5.5

User score

â–¼Worse than 86% of motherboards
6.8

Value for money

Value for money
6.8/ 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
â–¼ Worse than 95% of models
Score components

70%

6.0

Overall score

30%

8.5

Price

â–¼Worse than 95%
5.5

Technical score

Technical score
5.5/ 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
â–¼ Worse than 63% of models
Score components

19%

6.7

Memory

16%

7.0

Platform

16%

4.1

Storage

15%

4.3

Network

13%

4.9

Ports

8%

3.3

Expansion

8%

5.5

Power & Cooling

5%

8.7

Audio

â–¼Worse than 63%
5.5

Reviews score

Reviews score
5.5/ 10
✕
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
â–¼ Worse than 81% of models

5.5

Mark 7.6 is below the typical mark 8.3 of this category, so it cannot lift the score above the technical score

80%

8.2

Average grade

20%

5.0

Popularity

Grades by review (1)
1 video review, counting half as much as a written test. Reviews count 20% of the overall score.
Ratings from across the web count in the User score, not in this score.
â–¼Worse than 81%
5.5

User score

User score
5.5/ 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
â–¼ Worse than 79% of models

5.5

Mark 7.8 is below the typical mark 8.4 of this category, so it cannot lift the score above the technical score

70%

8.4

Rating

30%

6.3

Popularity

â–¼Worse than 79%
?

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-x99s-gaming-9-ack
  • msi-x99s-gaming-9-ack
  • msi-x99s-gaming-9-ack
  • msi-x99s-gaming-9-ack
  • msi-x99s-gaming-9-ack
  • msi-x99s-gaming-9-ack
msi-x99s-gaming-9-ack
msi-x99s-gaming-9-ack
msi-x99s-gaming-9-ack
msi-x99s-gaming-9-ack
msi-x99s-gaming-9-ack
msi-x99s-gaming-9-ack
Where to buy
*As an Amazon Associate, we earn from qualifying purchases.
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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Technical Specifications of motherboard MSI X99S Gaming 9 ACK

Technical score
Technical score
5.5/ 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
â–¼ Worse than 63% of models
Score components:

19%

6.7

Memory

16%

7.0

Platform

16%

4.1

Storage

15%

4.3

Network

13%

4.9

Ports

8%

3.3

Expansion

8%

5.5

Power & Cooling

5%

8.7

Audio

5.5
Reviews score
5.5
User score
5.5
List score
?
Value for money
Value for money
6.8/ 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
â–¼ Worse than 95% of models
Score components:

70%

6.0

Overall score

30%

8.5

Price

6.8
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
E-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
Market range: <2 – >4
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
Market range: <32 GB – >256 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
2,133 MT/s
Market range: <2.1k MT/s – >8k MT/s
This motherboard supports memory speeds up to 2,133 MT/s, which is lower than that of 87.2% of motherboards and equal to that of 4.3% of motherboards.
Show more
N. of M.2 sockets
1
Market range: <0 – >4
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
Market range: <4 – >8
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
Market range: <0 – >1
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
Market range: <0 – >1
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
5
Market range: <0 – >3
This motherboard has 5 PCIe 3.0x16 slots, which is more than 97.4% of motherboards and equal to 2.1% of motherboards.
PCIe slot electrical configuration
x16/x0/x0/x16/x8, x8/x8/x0/x16/x8, x16/x0/x0/x8/x8, x16/x0/x0/x8/x0, x8/x8/x0/x8/x0
This motherboard splits its PCIe lanes as x16/x0/x0/x16/x8, x8/x8/x0/x16/x8, x16/x0/x0/x8/x8, x16/x0/x0/x8/x0, x8/x8/x0/x8/x0, which is more generous than 97.4% of Motherboards.
Depends on CPU.
PCIe bifurcation support
no
This motherboard does not support PCIe bifurcation. 59.8% of motherboards support this feature.
Requires BIOS mod.
Show more
Total USB ports (rear I/O)
10
Market range: <6 – >10
This motherboard has 10 USB ports (rear I/O), which is more than 75.7% of motherboards and equal to 15.4% of motherboards.
Total USB ports (including headers)
18
Market range: <11 – >19
This motherboard has 18 USB ports (including headers), which is more than 81.8% of motherboards and equal to 5.2% of motherboards.
Total USB-C ports (rear I/O)
0
Market range: <0 – >2
This motherboard has 0 USB-C ports (rear I/O), which is fewer than 64.2% of motherboards and equal to 35.8% of motherboards.
Total USB-C ports (including headers)
0
Market range: <0 – >3
This motherboard has 0 USB-C ports (including headers), which is fewer than 69.5% of motherboards and equal to 30.5% of motherboards.
N. of USB 3.2 Gen2x2 ports (USB-C)
0
Market range: <0 – >1
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
Market range: <1 Gbps – >2.5 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
Killer E2205
This motherboard has a Killer E2205 LAN controller, which is slower than 95.9% of Motherboards and equal to 1.5% of Motherboards.
N. of RJ45 ports
1
Market range: <1 – >2
This motherboard has 1 RJ45 ports, which is fewer than 14.4% of motherboards and equal to 85.6% of motherboards.
Wi-Fi connectivity
yes
This motherboard supports Wi-Fi connectivity. 50% of motherboards support this feature.
Wi-Fi version
Wi-Fi 5 (802.11ac)
This motherboard uses Wi-Fi 5 (802.11ac), which is newer than 49.8% of Motherboards and the same as 10.4% of Motherboards.
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
115 dB
Market range: <95 dB – >120 dB
This motherboard has an audio SNR of 115 dB, which is higher than that of 47.7% of motherboards and equal to that of 7.6% of motherboards.
Headphone amp support
yes
This motherboard supports a headphone amp. 41.2% of motherboards support this feature.
supports up to 600Ω.
N. of 3.5mm audio jacks
5
Market range: <2 – >6
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
7+2
This motherboard has 7+2 VRM phases, which is fewer than 66.3% of motherboards and equal to 0.1% of motherboards.
N. of CPU power connectors
1
Market range: <1 – >2
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
Market range: <3 – >8
This motherboard has 5 fan headers, which is fewer than 50% of motherboards and equal to 14.6% of motherboards.
Pump header
yes
This motherboard has a pump header. 22.1% of motherboards include this feature.
Pump header max current
1 A
Market range: <0 A – >3 A
This motherboard supports up to 1 A on the pump header, which is lower than that of 56.5% of motherboards and equal to that of 19.6% of motherboards.
Show more

MSI X99S Gaming 9 ACK 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
  • 2 more rear USB ports
    This motherboard has more rear USB ports than the average motherboard (10 vs 8). The average motherboard has 8 rear USB port/s.
    10 vs 8
  • 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.
  • 3 more total USB connections
    This motherboard 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
    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/x0/x0/x16/x8, x8/x8/x0/x16/x8, x16/x0/x0/x8/x8, x16/x0/x0/x8/x0, x8/x8/x0/x8/x0 vs x16/x0/x4, x8/x8/x4).
    Depends on CPU.
    x16/x0/x0/x16/x8, x8/x8/x0/x16/x8, x16/x0/x0/x8/x8, x16/x0/x0/x8/x0, x8/x8/x0/x8/x0 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.
    Rear-panel Clear CMOS button.
  • 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
  • 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/x0/x0/x16/x8, x8/x8/x0/x16/x8, x16/x0/x0/x8/x8, x16/x0/x0/x8/x0, x8/x8/x0/x8/x0 vs x16/x0/x4, x8/x8/x4).
    Depends on CPU.
    x16/x0/x0/x16/x8, x8/x8/x0/x16/x8, x16/x0/x0/x8/x8, x16/x0/x0/x8/x0, x8/x8/x0/x8/x0 vs x16/x0/x4, x8/x8/x4
  • 4 more PCIe 3.0x16 slots
    This motherboard has more PCIe 3.0x16 slots than the average motherboard (5 vs 1). The average motherboard has 1 PCIe 3.0x16 slot/s.
    5 vs 1
  • 2 more rear USB ports
    This motherboard has more rear USB ports than the average motherboard (10 vs 8). The average motherboard has 8 rear USB port/s.
    10 vs 8
  • 3 more total USB connections
    This motherboard 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
    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
  • 4 more USB 3.2 Gen1 ports
    This motherboard has more USB 3.2 Gen1 ports than the average motherboard (8 vs 4). The average motherboard has 4 USB 3.2 Gen1 port/s.
    8 vs 4
  • Supports Bluetooth
    This motherboard supports Bluetooth, while the average motherboard does not. 49% of motherboards support Bluetooth.
  • 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 BIOS flashback support
    This motherboard does not support BIOS flashback, while the average motherboard does. 51.3% of motherboards support BIOS flashback.
    requires CPU/RAM
  • 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
  • 1 fewer rear USB-C ports
    This motherboard 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 PCIe bifurcation support
    This motherboard does not support PCIe bifurcation, while the average motherboard does. 59.7% of motherboards support PCIe bifurcation.
    Requires BIOS mod.
  • 24.7% lower review score
    Reviews score
    5.5/ 10
    ✕
    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
    â–¼ Worse than 81% of models

    5.5

    Mark 7.6 is below the typical mark 8.3 of this category, so it cannot lift the score above the technical score

    80%

    8.2

    Average grade

    20%

    5.0

    Popularity

    Grades by review (1)
    1 video review, counting half as much as a written test. Reviews count 20% of the overall score.
    Ratings from across the web count in the User score, not in this score.
    5.5 vs 7.3
  • 25.7% lower user score
    User score
    5.5/ 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
    â–¼ Worse than 79% of models

    5.5

    Mark 7.8 is below the typical mark 8.4 of this category, so it cannot lift the score above the technical score

    70%

    8.4

    Rating

    30%

    6.3

    Popularity

    5.5 vs 7.4
  • 13.6% worse value for money
    MSI X99S Gaming 9 ACK has worse value for money than the average motherboard (6.77 vs 7.7).
    6.77 vs 7.7
  • 2.53x more expensive
    MSI X99S Gaming 9 ACK is more expensive than the average motherboard (£380 vs £150).
    £380 vs £150
  • 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.
    requires CPU/RAM
  • 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
  • 54.6% lower maximum RAM speed
    This motherboard has a lower maximum RAM speed than the average motherboard (2,133 MT/s vs 4,699.5 MT/s). The average motherboard supports RAM speed of 4,699.5 MT/s.
    2,133 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.
    top speed depends on CPU and memory setup
    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.
    Requires BIOS mod.
  • 1 fewer PCIe x1 slots
    This motherboard has fewer PCIe x1 slots than the average motherboard (0 vs 1). The average motherboard has 1 PCIe x1 slot/s.
    0 vs 1
  • 1 fewer rear USB-C ports
    This motherboard 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
  • 1 fewer USB 3.2 Gen2 ports
    This motherboard 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.
    0 vs 1
  • 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-C connections
    This motherboard has fewer total USB-C connections than the average motherboard (0 vs 1). The average motherboard has 1 total USB-C connections.
    0 vs 1
  • 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
  • Less recent Bluetooth version
    This motherboard has a less recent Bluetooth version than the average motherboard (4.1 vs 5.4).
    4.1 vs 5.4
  • Less capable LAN controller
    This motherboard has a slower LAN controller than the average motherboard (Killer E2205 vs Killer + Intel + Realtek).
    Killer E2205 vs Killer + Intel + Realtek
  • 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
  • 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
  • Fewer VRM phases
    This motherboard has fewer VRM phases than the average motherboard (7+2 vs 10). The average motherboard has 10 VRM phase/s.
    7+2 vs 10
  • 1 A lower pump header current limit
    This motherboard 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.
    1 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

7.0
HardwareTechTV
≈ estimated
15/03/2015
Hands-on review · features, benchmarks and overclocking
Verdict
MSI X99S Gaming 9 ACK is a niche board for buyers who will use its extras; it is expensive and draws more power under load.

Third-party reviews

What customers like about MSI X99S Gaming 9 ACK

  • Innovative 'Streaming Engine' hardware for recording/streaming without impacting CPU performance
  • Excellent stable overclocking capabilities with user-friendly UEFI BIOS options
  • High-quality 'Audio Boost 2' with dedicated power and Japanese capacitors for crystal clear sound
  • Stunning aesthetic design featuring a black and red dragon theme with LED lighting
  • Includes a comprehensive accessory bundle, including a 2-year XSplit premium license
  • Extensive connectivity with 10 SATA ports, M.2 Gen3 x4 support, and built-in Wi-Fi/Bluetooth

What customers don't like about MSI X99S Gaming 9 ACK

  • High retail price compared to other X99 motherboards
  • Large E-ATX-like width may cause cable routing issues in some standard cases
  • The I/O cover design is criticized for being attached through the same holes needed for case mounting
  • Streaming Engine is limited to 1080p, which may be a drawback for 1440p or 4K gamers
  • Large CPU coolers can potentially obstruct the primary PCIe slot due to board layout
  • CMOS battery placement is considered inconvenient by some users

Verdict

The MSI X99S Gaming 9 ACK is a high-end E-ATX motherboard designed for the Intel LGA 2011-3 socket, featuring the X99 Express chipset with support for Quad Channel DDR4 memory up to 128GB at 3333MHz (OC). Key characteristics include five PCIe 3.0 x16 slots supporting 4-way SLI/CrossFire, a Turbo M.2 slot delivering up to 32Gb/s, and the unique Streaming Engine hardware for H.264 video encoding. Its primary pros are the robust Military Class 4 components, integrated Killer DoubleShot Pro networking (Gigabit LAN and 802.11ac Wi-Fi), and high-quality Audio Boost 2 with dual headphone amplifiers. However, notable cons include its premium price point, the awkward placement of the CMOS battery which can be blocked by multi-GPU setups, and the fact that using the M.2 slot disables certain SATA ports.

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