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 XPower AC review: 109 specs compared

Avg. price:~£330CPU socket:LGA 2011-3Chipset:Intel X99Form factor:E-ATX

MSI X99S XPower AC Review: Compare 109 technical specifications and 4 expert and video reviews to see how this product ranks in the Motherboards category and whether it is worth buying.

MSI X99S XPower AC
6.8/10

Overall score

Score
6.8/ 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 56% of models
Score components

40%

5.8

Technical score

20%

8.4

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%

5.8

User score

â–¼Worse than 56% of motherboards
7.4

Value for money

Value for money
7.4/ 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 73% of models
Score components

70%

6.8

Overall score

30%

8.8

Price

â–¼Worse than 73%
5.8

Technical score

Technical score
5.8/ 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 55% of models
Score components

19%

6.8

Memory

16%

7.0

Platform

16%

4.1

Storage

15%

5.8

Network

13%

4.9

Ports

8%

3.5

Expansion

8%

6.7

Power & Cooling

5%

8.7

Audio

â–¼Worse than 55%
8.4

Reviews score

Reviews score
8.4/ 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–² Better than 57% of models

80%

8.4

Average grade

20%

8.3

Popularity

Grades by review (4)
2 reviews: 1 with a printed score, 1 estimated from the review. 2 video reviews, each 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–²Better than 57%
5.8

User score

User score
5.8/ 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 76% of models

5.8

Mark 8.1 is below the typical mark 8.4 of this category, so it cannot lift the score above the technical score

70%

8.7

Rating

30%

6.6

Popularity

â–¼Worse than 76%
?

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-xpower-ac
msi-x99s-xpower-ac
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.

What reviewers say about the MSI X99S XPower AC

Based on 2 · 2

Reviewers mainly complain about the steep cost, feeling the board is hard to justify for most buyers.
Criticised
Pick a topic to see who said what
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Technical Specifications of motherboard MSI X99S XPower AC

Technical score
Technical score
5.8/ 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 55% of models
Score components:

19%

6.8

Memory

16%

7.0

Platform

16%

4.1

Storage

15%

5.8

Network

13%

4.9

Ports

8%

3.5

Expansion

8%

6.7

Power & Cooling

5%

8.7

Audio

5.8
Reviews score
8.4
User score
5.8
List score
?
Value for money
Value for money
7.4/ 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 73% of models
Score components:

70%

6.8

Overall score

30%

8.8

Price

7.4
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
3,333 MT/s
Market range: <2.1k MT/s – >8k 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
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
This motherboard splits its PCIe lanes as x16, which is less generous than 81% of Motherboards and the same as 16.1% of Motherboards.
PCIe bifurcation support
yes
This motherboard supports PCIe bifurcation. 40.3% of motherboards support this feature.
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.
dual 1GbE ports
LAN controller
?
N. of RJ45 ports
2
Market range: <1 – >2
This motherboard has 2 RJ45 ports, which is more than 85.6% of motherboards and equal to 13.3% 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.
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.
also has optical S/PDIF out
Show more
VRM phases
12
This motherboard has 12 VRM phases, which is more than 55.4% of motherboards and equal to 4.4% of motherboards.
N. of CPU power connectors
2
Market range: <1 – >2
This motherboard has 2 CPU power connectors, which is more than 54.9% of motherboards and equal to 44.8% of motherboards.
N. of fan headers
7
Market range: <3 – >8
This motherboard has 7 fan headers, which is more than 72.4% of motherboards and equal to 9.8% 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
Market range: <0 A – >3 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 X99S XPower AC vs the average motherboard

246810TotalPlatformMemoryStorageExpansionPortsNetworkAudioPower & Cooling
  • 1 more RJ45 ports
    This motherboard has more RJ45 ports than the average motherboard (2 vs 1). The average motherboard has 1 RJ45 port/s.
    2 vs 1
  • 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
  • 1 more CPU power connectors
    This motherboard has more CPU power connectors than the average motherboard (2 vs 1). The average motherboard has 1 CPU power connectors.
    2 vs 1
  • 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
  • 15.1% higher review score
    Reviews score
    8.4/ 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–² Better than 57% of models

    80%

    8.4

    Average grade

    20%

    8.3

    Popularity

    Grades by review (4)
    2 reviews: 1 with a printed score, 1 estimated from the review. 2 video reviews, each 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.
    8.4 vs 7.3
  • 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
  • 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
  • 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
  • 6 more USB 3.2 Gen1 ports
    This motherboard has more USB 3.2 Gen1 ports than the average motherboard (10 vs 4). The average motherboard has 4 USB 3.2 Gen1 port/s.
    10 vs 4
  • 1 more RJ45 ports
    This motherboard has more RJ45 ports than the average motherboard (2 vs 1). The average motherboard has 1 RJ45 port/s.
    2 vs 1
  • 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.
    also has optical S/PDIF out
    5 vs 3
  • 1 more CPU power connectors
    This motherboard has more CPU power connectors than the average motherboard (2 vs 1). The average motherboard has 1 CPU power connectors.
    2 vs 1
  • 1.5 more fan headers
    This motherboard has more fan headers than the average motherboard (7 vs 5.5). The average motherboard has 5.5 fan header/s.
    7 vs 5.5
  • More VRM phases
    This motherboard has more VRM phases than the average motherboard (12 vs 10). The average motherboard has 10 VRM phase/s.
    12 vs 10
  • 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.
    dual 1GbE ports
    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.
  • 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
  • Less generous lane split
    This motherboard splits its PCIe lanes less generously than the average motherboard (x16 vs x16/x0/x4, x8/x8/x4).
    x16 vs x16/x0/x4, x8/x8/x4
  • 21.6% lower user score
    User score
    5.8/ 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 76% of models

    5.8

    Mark 8.1 is below the typical mark 8.4 of this category, so it cannot lift the score above the technical score

    70%

    8.7

    Rating

    30%

    6.6

    Popularity

    5.8 vs 7.4
  • 2.2x more expensive
    MSI X99S XPower AC is more expensive than the average motherboard (£330 vs £150).
    £330 vs £150
  • 4% worse value for money
    MSI X99S XPower AC has worse value for money than the average motherboard (7.4 vs 7.7).
    7.4 vs 7.7
  • 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
  • Less generous lane split
    This motherboard splits its PCIe lanes less generously than the average motherboard (x16 vs x16/x0/x4, x8/x8/x4).
    x16 vs x16/x0/x4, x8/x8/x4
  • 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.
    dual 1GbE ports
    1 Gbps vs 2.5 Gbps
  • Less recent Bluetooth version
    This motherboard has a less recent Bluetooth version than the average motherboard (4 vs 5.4).
    4 vs 5.4
  • 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.
  • 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

Video reviews

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

9.0
HardwareTechTV
≈ estimated
26/12/2014
Full review · benchmarks, power draw and overclocking tests
Verdict
The MSI X99S XPower AC has no real weak points and suits overclockers who want rich features, not budget builds.
9.0
HARDTECHNET.TV
≈ estimated
30/07/2015
First look · unboxing and features
Verdict
The MSI X99S XPower AC is a very good board with strong overclocking potential, though it is a considerable investment.
Hands-on video, no verdict

Expert reviews

In-depth analysis and verdict from leading tech publications

6.0
overclock3d.net
≈ estimated
22/10/2014
Stability test · Overclocking board
Verdict
The MSI X99S XPOWER AC is very fast at stock speed but crashed when overclocked, so wait for BIOS updates that fix stability.
10
nexthardware.com
✓ explicit
03/02/2015
Review · Haswell-E workstation board
Verdict
The MSI X99S XPower AC is a sturdy, versatile board for workstations and gaming, lacking only a dedicated overclocking socket.

Third-party reviews

What customers like about MSI X99S XPower AC

  • Excellent overclocking features, including physical frequency adjustment buttons, V-Check voltage measurement points, and a specialized LN2 cooling mode.
  • Comprehensive connectivity with 10 SATA 6Gb/s ports, 32Gbps Turbo M.2 slot, and built-in 802.11 AC Wi-Fi.
  • High-end aesthetics featuring a matte black and yellow color scheme with white PCB 'halo' LED lighting.
  • Robust multi-GPU support for up to 4-way SLI and Crossfire configurations without needing extra multiplexing chips.
  • User-friendly Click BIOS 4 with a mature interface that is easy to navigate for both basic setup and advanced tuning.
  • Premium internal audio (Audio Boost 2) with EMI shielding and dedicated power for high-end headphones.

What customers don't like about MSI X99S XPower AC

  • High initial price point makes it difficult to recommend for users who do not plan on extreme overclocking.
  • Early BIOS versions reported stability issues, requiring immediate updates to the latest version for reliable performance.
  • The yellow color scheme on the heatsinks was polarizing, with some reviewers finding it less appealing than a more neutral design.
  • The E-ATX form factor and dense layout of OC controls can make installation cramped in smaller enthusiast cases.

Verdict

The MSI X99S XPower AC is a high-end Extended ATX (E-ATX) motherboard designed for the Intel LGA 2011-3 socket, featuring the Intel X99 chipset and a robust 12-phase Digitall Power VRM. It supports quad-channel DDR4 memory up to 128GB with speeds reaching 3333MHz (OC) and provides exceptional expansion through five PCIe 3.0 x16 slots for 4-way NVIDIA SLI or AMD CrossFire configurations. Notable storage and connectivity include a 32Gbps Turbo M.2 slot, ten SATA 6Gb/s ports, and integrated Intel 802.11ac Wi-Fi with Bluetooth 4.0. Its primary pros are its world-class overclocking features, such as OC Genie 4, V-Check Points 2, and a dedicated OC fan stand, alongside high-quality Military Class 4 components for extreme stability. However, early users noted high initial pricing and some BIOS stability issues during the platform's launch phase.

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