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MSI X99S GAMING 9 AC

The MSI X99S GAMING 9 AC is compatible with Intel processors with the Socket 2011-3 / R3 / LGA2011-3 socket.

It has 128 GB DDR4 maximum RAM and conforms to the E-ATX form factor standard.

7.9

MSI X99S GAMING 9 AC

help iconCPU SocketSocket 2011-3 / R3 / LGA2011-3help iconUSB 3.0 Rear8
help iconCPU Compatible MakeIntelhelp iconGraphics Card InterfacePCIe v3.0
help iconCPU ChipsetIntel® X99 Chipsethelp iconSLI Support4 graphics cards
help iconRelease Date14 Aug 2014help iconCrossfire Support4 graphics cards
help iconForm FactorE-ATXhelp iconOnboard GPUno
help iconMax RAM128 GB DDR4help iconPCI Slots
  • 5 x PCIe x16 v3.0
help iconRAM Slots8 x DDR4help iconSATA 1.00
help iconMemory Channels4help iconSATA 2.00
help iconCompatible RAM Speeds
  • DDR4 2133 MHz
  • DDR4 2400 MHz
  • DDR4 2666 MHz
  • DDR4 2800 MHz
  • DDR4 3000 MHz
  • DDR4 3200 MHz
help iconSATA 3.00
help iconUSB 2.0 Internal Slots2help iconRAID Supportyes
help iconUSB 2.0 Rear2help iconInternal I/O
  • 1 x 24 pin power connector
  • 1 x 8 pin power connector
  • 1 x 4 pin power connector
  • 1 x 4 pin fan connector
  • CD/DVD drive connector
  • TPM Chip
help iconUSB 3.0 Internal2help iconBack Panel I/O
  • Line In Connector
  • Line Out Connector
  • 7.1 Surround Sound
  • Audio Input Output
  • 1 x LAN connector
  • PS/2 keyboard connector
  • PS/2 mouse connector

MSI X99S GAMING 9 AC compatibility review

The MSI X99S GAMING 9 AC uses the Intel Socket 2011-3 / R3 / LGA2011-3 CPU socket. Any compatible Intel CPU will have the same socket entry. It uses the DDR4 memory type, with maximum speeds of up to 3200 MHz, and 0 DDR4 slots allowing for a maximum total of 128 GB RAM.

Released on 14 Aug 2014, the MSI X99S GAMING 9 AC is now over 6 years old, which means it is extremely out of date and is based on very aged technologies. This motherboard will be dwarfed in performance by its modern counterparts, and will likely have very little support from MSI.

The E-ATX MSI X99S GAMING 9 AC uses a less common standard than the traditional ATX you most often see. As such, you should be wary of its compatibility with other cases, as well as the compatibility of PSUs with the case you choose.

The MSI X99S GAMING 9 AC has 9 SATA 3.0 hard drive slots. These allow for theoretical data transfer speeds of up to 6GB/s, as opposed to the 3GB/s of SATA 2.0. Generally speaking, only high performance hard drives, specifically solid-state drives, will be able to take advantage of the bandwidth potential of SATA 3.0 ports, though it is backwards compatible, so you do not have to take advantage.

The MSI X99S GAMING 9 AC does not support onboard graphics. Any system build that uses this motherboard therefore requires a separate graphics card, or a processor that has a GPU on the same die, such as AMD APU processors. There are 5 PCIe x16 slots on this motherboard. This means it is perfectly capable of accommodating the latest graphics cards, although it is important to try and use a graphics card with the same graphics card interface of PCIe v3.0, as anything below will not reach the motherboard's potential, and anything above will have its performance slashed to the bandwidth maximum of the MSI X99S GAMING 9 AC's PCIe v3.0. The MSI X99S GAMING 9 AC supports up to 4 Nvidia SLI connected graphics cards or up to 4 AMD Crossfire connected graphics cards for improved overall graphical performance at the cost of multiplied graphics-based power consumption as well as the price of the cards themselves.

The MSI X99S GAMING 9 AC has 4 USB 2.0 slots and 10 USB 3.0 slots. USB 3.0 slots are theoretically capable of data transfer speeds of up to 5 Gbit/s, which is over 10 times faster than the USB 2.0 top speed of 480 Mbit/s. Although USB 2.0 slots alone currently serve as well as ever, an upgrade would better future-proof your system as more USB 3.0 compatible peripherals emerge. USB 3.0 is also backwards compatible with USB 2.0, which means you do not even have to use the newer slot functionality if you do not wish to.

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