MSI X99S Gaming 9 ACK Intel X99 (Socket 2011) DDR4 EATX Motherboard

X99S Gaming 9 ACK Intel X99 (Socket 2011) DDR4 EATX Motherboard

  • Socket 2011-3
  • Intel X99 Chipset
  • 5x PCI-E 3.0 x16
  • 10x SATA 6Gb/s
  • SATA Express
  • M.2 Slot
  • 12x USB 3.0
  • 6x USB 2.0
  • Killer LAN & WIFI AC
  • Creative Labs 7.1 HD Audio
  • Quad Crossfire & Quad SLI Support
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Stock Code: MB-282-MS

EAN: 00000000

MPN: X99S Gaming 9 ACK

Manufacturer: MSI

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Product information:

X99S Gaming 9 ACK Intel X99 (Socket 2011) DDR4 EATX Motherboard

The MSI X99 GAMING motherboards are perfected in every way focusing on an even heavier and more detailed gaming look and feel

  • Amazing sound with Audio Boost 2, powered by Creative Sound Blaster Cinema 2
  • USB Audio Power
  • ACK: Use Killer DoubleShot Pro to combine Killer WIFI with Killer LAN for the best online gaming experience
  • Push your SSD to the limit with M.2 & SATA-Express
  • Show off your gaming skills to the world with XSplit Gamecaster
  • SteamOS ready out of the box
  • Military Class 4 components
  • Super stable with Guard-Pro
  • Specialised production lines just for GAMING motherboards
  • OC Genie 4



Through the detection and prioritization of gaming traffic you can finally fully utilize your network without fear of being kicked from an online game because of high ping. This enables true multi-tasking without manually enabling or disabling applications, updates and installations. Killer networking actually allows you to use your PC 24 hours a day. Smart teaming combines both LAN & Wireless for the best possible gaming experience. The Killer Network Manager decides which apps runs on which connection for gaming traffic optimization.

MSI Streaming Engine

Record and stream all of your in-game activity while enjoying your games at maximum FPS

Because Streaming Engine captures video real-time through a dedicated hardware solution you are free of any impact on CPU performance, where other solutions demand vital resources highly impacting FPS performance. Based on a AVerMedia HD streaming solution we offer the best streaming solution on the market, saving you up to $150. Record your gaming activities at amazing 1080p quality @ 60Mbps bitrate without sacrificing CPU and graphics performance.

2 Year Premium License for XSplit Gamecaster

XSplit Gamecaster and XSplit Broadcaster lets you easily record, stream and share your gaming sessions with fellow gamers

Want to show off your skills or just make a fun gaming video for your friends? XSplit Gamecaster lets you easily record your gaming moments and broadcast your live gameplay sessions to Twitch, YouTube, UStream and more. It's simple, easy to use and ideal for sharing your gameplay with friends, family or the world - Or for capturing those perfect gaming moments, just for the heck of it. So what are you waiting for? Join the revmolution and start streaming and recording with XSplit Gamecaster today.


CPU Support Supports New Intel® Core™ i7 Processor Extreme Edition for LGA2011-3 Socket
Chipset Intel® X99 Express Chipset
Memory Support Support eight DDR4 2133/2200(OC)/2400(OC)/2600(OC)/2666(OC)/2750(OC)/3000(OC)/3110(OC)/3333(OC) MHz DRAM, 128GB Max.
- Quad channel memory architecture
- Supports non-ECC, un-buffered memory
Slots 5 x PCIe 3.0 x16 slots, support up to 4-way mode
- 1-way mode: x16/ x0/ x0/ x0/ x0
- 2-way mode: x16/ x0/ x0/ x16/ x0*, 16/ x0/ x0/ x8/ x0**
- 3-way mode: x16/ x0/ x0/ x16/ x8*, x8/ x8/ x0/ x8/ x0**
- 4-way mode: x8/ x8/ x0/ x16/ x8*, x8/ x8/ x0/ x8/ x4**
* For the CPU that supports 40 PCIe lanes
** For the CPU that supports 28 PCIe lanes
On-Board SATA Intel X99 Express Chipset
o 10 x SATA 6Gb/s ports (2 ports reserved for SATA Express port)*
- SATA1~6 support RAID 0, RAID 1, RAID 5 and RAID 10
- SATA7~10 ports only support IDE mode and AHCI mode.
- Supports Intel® Smart Response Technology (Windows 7/ 8/ 8.1)
o 1 x SATA Express port*
o 1 x M.2 port, supports up to 32Gb/s speed**
- M.2 port supports M.2 SATA 6Gb/s module
- M.2 PCIe interface does not support RAID 0, RAID1, RAID 5 and RAID 10.
*The SATA Express port or SATA5~6 ports will be unavailable when installing the M.2 SATA interface module in the M.2 port.
** Intel RST does not support PCIe M.2 SSD with Legacy ROM.
USB o Intel® X99 Express Chipset
- 6x USB 3.0 ports (2 ports on the back panel, 4 ports available through the internal USB 3.0 connectors*)
- 6x USB 2.0 ports (2 ports on the back panel, 4 ports available through the internal USB 2.0 connectors)
o AsMedia ASM1042AE
- 2 x USB 3.0 ports on the back panel
o VIA VL805
- 4x USB 3.0 ports on the back panel
* Internal JUSB3 connector supports MSI Super Charger.
Audio Realtek® ALC1150 Codec
- 7.1-Channel High Definition Audio
- Supports S/PDIF output
LAN 1 x Killer E2205 Gigabit LAN controller
Wireless LAN Killer Wireless 1525 module
- Supports 2x2 802.11a/b/g/n/ac with advanced features
- Supports 20/ 40MHz at 2.4GHz and 20/ 40/ 80MHz at 5GHz
Bluetooth Killer Wireless 1525 module
- Supports Bluetooth v4.1
Multi-GPU o Supports 4-Way AMD® CrossFireTM Technology*
o Supports 4-Way NVIDIA® SLI™ Technology (For the CPU that supports 40 PCIe lanes)
o Supports 3-Way NVIDIA® SLI™ Technology (For the CPU that supports 28 PCIe lanes)
* Supports Windows 7 and Windows 8/ 8.1
Internal I/O Connectors - 1 x 24-pin ATX main power connector
- 1 x 8-pin ATX 12V power connector
- 1 x 4-pin ATX 12V power connector
- 10 x SATA 6Gb/s connectors
- 1 x M.2 connector
- 1 x SATA Express connector
- 2 x USB 2.0 connectors (supports additional 4 USB 2.0 ports)
- 2 x USB 3.0 connectors (supports additional 4 USB 3.0 ports)
- 2 x 4-pin CPU fan connectors
- 3 x 4-pin system fan connectors
- 1 x Front panel audio connector
- 2 x System panel connectors
- 1 x TPM module connector
- 1 x Chassis Intrusion connector
- 9 x V-Check connectorsts
- 1 x Clear CMOS jumper
- 1 x Power button
- 1 x Reset button
- 1 x OC Genie button
- 1 x Multi-BIOS switch
- 1 x OC Genie mode switch
- 1 x Audio power switch
- 1 x Slow mode booting switch
- 1 x 2-Digit Debug Code LED
- 1 x Wi-Fi/Bluetooth module connector
Back Panel I/O Ports - 1 x PS/2 keyboard/ mouse combo port
- 2 x USB 2.0 ports
- 1 x Clear CMOS button
- 8 x USB 3.0 ports
- 1 x LAN (RJ45) port
- 1 x Optical S/PDIF OUT connector
- 5 x OFC audio jacks
Dimension 12 in. x 10.4 in. (30.5 cm x 26.4 cm) EATX Form Factor

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Customer review

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Average customer rating

(from 2 customer reviews)
All Time (2)

amazing motherboard

got this from overclockers first one I got had a fault on it but overclockers replaced it with a 2 day turn around great service from them. the motherboard looks awesome still tinkering with not overclocked it yet but will be with my i7 5930k. the killer internet bit is very good. the avermedia streaming engine is very good had it running with my elgato hd60 at the same time to do a comparison video and there was a little difference between the two but not much
if your after a good board you wont go wrong with this


Excellent since v1.4 BIOS

I have had this board (AC version) since September and the first one I received needed a BIOS update before I could get it to POST (BIOS v1.0). Upon receiving a new one from Overclockers with updated BIOS (v1.2), it started first time and I had no problems running stock. When overclocking it seemed a little unstable at first and I waited until BIOS v1.4 until trying overclocking.

Spec wise I have:
Custom watercooling loop with 360x180 rad & XSPC 750 v4 pump
Intel i7 5820k @ 4.2ghz 1.2v Vcore
Corsair Dominator 2666mhz DDR4 RAM
MSI GTX 970 Gaming 4 @ 1570mhz GPU / 7800mhz VRAM (Modified BIOS with 300Watt TDP)

This spec has run rock solid stable for over a month now and the board is easily capable of providing power to the CPU in this state using both 8 pin & 4 pin atx connectors. The board performs flawlessly and even has an LED temp gauge which displays the highest temp of either board or cpu (depending which is highest at the time).

The streaming engine works well (and games take no fps hit) with the X-split game caster software bundled in. However, it does not seem to be supported by any other software such as afterburner etc. which is a bit of a shame.

The BIOS is amazing (best thing about the board imo) with a huge array of options for overclocking. My CPU sits stable at 4.2ghz (Tested in P95 overnight) & allows for Intel's voltage/clock scaling which does not cause any crashing and it can even be adjusted if necessary. I even had it stable at 4.4ghz but it needed 1.3v Vcore and this caused heat spikes of over 70C (on cpu) even with watercooling so I opted to settle at 1.2v but it goes to show the board can handle this.

The AC wifi module is excellent and easy to setup and the other features such as dedicated DAC USB outputs (with solid 5v) are a nice touch which I am currently using with an external Matrix Mini-i DAC. Bluetooth etc works well too as you'd expect.

All in all I highly rate this board as It's been nothing but excellent so far and I would strongly suggest it to anyone else, especially if you're looking to overclock.


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