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E-ATX motherboard, black PCB with silver heatsinks and red accents

MSI

MSI X99S XPOWER AC LGA 2011-v3 Intel X99 motherboard

SKU CH-G49R-KDX1W

An E-ATX X99 board with LGA 2011-v3 socket, quad-channel DDR4 up to 128 GB, five PCIe 3.0 x16 slots, dual Intel Gigabit LAN, Realtek ALC1150 7.1 audio, ten SATA III plus SATA Express and M.2.

  • ProcessorIntel Core ™ i7 Delicate Edition processor with new LGA 2011
  • ChipsetIntel X99
  • CPU socketLGA 2011-v3
  • Supported memorySupports four-channel DDR4 2133/2200 (OC)/2400 (OC)/2600 (OC
  • Max supported RAM128 GB
  • PCI slots5 PCIe 3.0 x16 slots (PCI_E1~ E4, PCI_E6) for 4-way mode - 1
  • Supports 128GB DDR4 for heavy multitasking
  • Four-channel DDR4 up to 3333 MHz OC for fast memory throughput
  • Five PCIe 3.0 x16 slots enable 4-way GPU configurations
  • Dual Intel Gigabit LAN plus 7.1 audio for wired networking and surround sound
  • 12 USB 3.0 ports backed by X99 and ASM1074 controllers

Platform Overview

The MSI X99S XPOWER AC is an Intel X99 chipset motherboard built for the LGA 2011-v3 socket. It targets enthusiasts and workstation users who need four-channel DDR4 memory and multi-GPU expansion in an E-ATX layout.

Suitability

This board suits builders running Intel Core i7 processors on the 2011-v3 platform who want up to 128GB of DDR4 and flexible PCIe 3.0 lane configurations. Users needing a compact Micro-ATX board or integrated wireless networking should look elsewhere as this is a full-size enthusiast platform.

Deciding Specification

The four-channel DDR4 controller supports memory speeds from 2133 MHz up to 3333 MHz when overclocked, with a maximum capacity of 128GB across eight slots. This memory bandwidth ceiling determines whether the platform can feed high-core-count CPUs and multi-GPU arrays without bottlenecking.

How it compares

Measured against everything we stock in Motherboards for Intel CPUs, at today’s prices. Recalculated every night.

Price $170.99
Pricier than about 76% of the 2,965 comparable items (median $97.99).

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Specifications

Product
Brand nameMSI
Product lineMSI X99S XPOWER AC
Model nameMSI X99S XPOWER AC
Processor
ProcessorIntel Core ™ i7 Delicate Edition processor with new LGA 2011-3 socket support
CPU socketLGA 2011-v3
ChipsetIntel X99
Memory
Supported memorySupports four-channel DDR4 2133/2200 (OC)/2400 (OC)/2600 (OC)/2666 (OC)/2750 (OC)/3000 (OC)/3110 (OC)/3333 (OC) MHz memory
Max supported RAM128 GB
Storage
SATA and RAID support10XSATA III interface; 1xSATA Express interface; 1xM.2 interface (10Gb/s)
Audio & video
Audio chipRealtek ALC1150 Decoder Chip
- 7.1 channel high-quality sound effects
- Supports S/PDIF output
Connectivity
Ethernet controller1 Intel I218-V Gigabit network - bidirectional connected network controller, medium access control (MAC) and physical layer (PHY)
1 Intel I210-AT Gigabit network controller
Ports & slots
PCI slots5 PCIe 3.0 x16 slots (PCI_E1~ E4, PCI_E6) for 4-way mode
- 1-way mode: x16/x0/x0/x0/x0–2-way mode: x16/x0/x0/x16/x0 *, x16/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 **
1 PCIe 2.0 x1 slot (PCI_E5)

Questions about this item

What case clearance does the E-ATX board and its 5 PCIe 3.0 x16 slots require?

The board follows the E-ATX form factor and provides five PCIe 3.0 x16 slots, so the chassis must accept an E-ATX motherboard and have enough expansion slots for the cards you plan to install.

Which power connectors must be seated before the first boot?

Connect the 24-pin ATX cable and the 8-pin CPU power cable; the board will not post if either is missing or only partially inserted.

Which onboard components have a limited lifespan and may need replacement?

The CMOS battery supplied with the board maintains the real-time clock and BIOS settings and will need replacing when it no longer holds charge.

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