Asus M5A99X EVO AM3+ AMD 990X SB950 DDR3 ATX

Product overview



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M5A99X EVO: First on AMD 990X: UEFI BIOS & Digital Power Design on AM3+ Platform

  • Dual Intelligent Processors 2 with DIGI+ VRM - Digital Power Design: The New Standard
  • UEFI BIOS (EZ Mode) - Flexible & Easy BIOS Interface
  • Auto Tuning - Auto System Level Up
  • Quad USB 3.0 & 6 x SATA 6Gb/s Support - Double Access, Double Convenience
  • Quad-GPU SLI and Quad-GPU CrossFireX Support!

ASUS has announced a new line up of AMD based motherboards that support the 990FX/990X/970 chipsets and AM3+ CPUs, the first company in the market to provide fully compatible AM3+ motherboards. The new motherboards will be the first on the AMD chipset based platform to support both multi-GPU technologies AMD CrossFireX™ and NVIDIA® SLI™.

The M5A99X EVO series offers unsurpassed compatibility with new AMD AM3+ socket CPUs, whilst also being backwards compatible with the previous generation AM3 CPU. The M5A/99 core series is equipped with DIP2, which features DIGI+ VRM technology in addition to the TPU and EPU. DIGI+ VRM power delivery allows users to precisely adjust and control power settings digitally for precise power control and flexible tuning of their system, perfectly serving the AM3+ CPU specification's power demand. Digital control differs from analogue controls by eliminating digital to analogue conversion lag, which helps to improve overclocking capabilities. This means precise power flow adjustment and management as well as easy and flexible tuning including extra DRAM power control for the AMD platform. It is the most precise power delivery available, providing the best-in-class in power efficiency, performance and stability while also helping to maximize the overall overclocking potential.

Also included on the M5A99X EVO is the intuitive UEFI BIOS menu interface. UEFI BIOS allows a user to control and adjust their BIOS settings through the use of a mouse-enabled interface for more user-friendly navigation. The built-in EZ Mode option also provides a drag-and-drop boot priority option, for easier management of boot devices.

ASUS Unique Selling Points

  • ASUS Dual Intelligent Processors 2 with DIGI+ VRM:
  • DIGI+VRM - Industry leading Digital 6+2 Phase Power Design
  • EPU with Switch
  • TPU with Auto Tuning and TurboV: Providing simple steps to easy overclocking.
  • UEFI BIOS(EZ Mode): Flexible & Easy BIOS Interface.
  • Front Panel USB 3.0 Support: Easy storage access.
  • MemOK!: Quickly ensures memory boot compatibility.
  • AI Suite II: One-stop Access to All Innovative ASUS Software.
  • Ai Charger+: Ensure reliable mobile phone charging.
  • ASUS Q-Connector: Easily access your PCI-E connectors.
  • ASUS Q-Shield: Protect yourself from EMI.
  • ASUS Q-LED (CPU, DRAM, VGA, Boot Device LEDs)
  • ASUS Q-Slot: Make Connection Quick and Accurate!
  • ASUS Q-DIMM: Make Connection Quick and Accurate!
  • O.C. Profile: Allows you to store multiple Bios images.
  • EZ Flash 2: Easily update your systems bios firmware.
  • ASUS MyLogo 2: Customize your boot screen.
  • Precision Tweaker 2: Easily tune your PC system performance.
  • Fan Xpert: Smart thermal control via fan speed detection.

Key specification

  • Form Factor: ATX Form Factor, 12"x 9.6" (30.5cm x 24.4cm)
  • Socket: AMD Socket AM3+ for FX™ / Phenom™II / Athlon™II / Sempron™ 100 Series Processors Including 8-Core.
  • Chipset: AMD 990X / SB950 Chipset
  • Graphics interface: 2 x PCIe 2.0 x16 slots (Single@x16 speed; Dual@x8/x8 speed)
  • Expansion Slots: 1 x PCIe 2.0 x16 slot (Black@x4 speed), 2 x PCIe 2.0 x1 slots, 1 x PCI slot.
  • Multi GPU: Supports NVIDIA® Quad-GPU SLI™ and ATI® Quad-GPU CrossFireX™ Technology.
  • Memory: 4 x DIMM, max. 32GB, DDR3 2133(O.C.)/2000(O.C.)/1800(O.C.)/1600/1333/1066 MHz, ECC and non-ECC, un-buffered memory, Dual channel memory architecture
  • Audio: Realtek® ALC 892 8-channel High Definition Audio CODEC
  • LAN: Realtek® 8111E Gigabit LAN controller
  • Storage: 6 x SATA 6Gb/s ports with RAID 0, 1, 5, 10, 2 x SATA 3Gb/s ports, 1 x Power eSATA 3Gb/s port, 1 x eSATA 3Gb/s port.
  • USB: 2 x USB 3.0/2.0 ports at mid-board for front panel support, 2 x USB 3.0/2.0 ports at back panel (blue).
  • Manageability: WfM 2.0, DMI 2.0, WOL by PME, WOR by PME, PXE

Back Panel I/O Ports

  • 1 x PS/2 Keyboard/Mouse combo port
  • 1 x Optical S/PDIF Out port
  • 1 x LAN (RJ45) port
  • 1 x IEEE1394a port
  • 1 x Power eSATA port (green)
  • 1 x eSATA port
  • 2 x USB 3.0/2.0 ports (blue)
  • 8 x USB 2.0/1.1 ports
  • 8-channel Audio I/O

Internal I/O Connectors

  • 1 x USB 3.0/2.0 connector supports additional 2 USB ports (19-pin)
  • 3 x USB 2.0/1/1 connectors support additional 6 USB ports
  • 6 x SATA 6Gb/s connectors
  • 2 x SATA 3Gb/s connectors
  • 1 x CPU Fan connector (4-pin)
  • 3 x Chassis Fan connectors (1 x 4-pin; 2 x 3-pin)
  • 1 x Power Fan connector (1 x 3-pin)
  • 1 x IEEE 1394a connector
  • 1 x COM connector
  • Front panel audio connector
  • 1 x S/PDIF Out header
  • 1 x Clear CMOS jumper
  • 24-pin EATX Power connector
  • 8-pin EATX 12V Power connector
  • System Panel (Q-Connector)
  • 1 x MemOK! Button
  • 1 x EPU switch
  • 1 x TPU switch

In The Box

  • 4 x Serial ATA 6Gb/s cables
  • 2 in 1 Q-connector
  • 1 x ASUS SLI bridge connector
  • I/O Shield
  • User's manual
  • Drivers
  • ASUS Utilities
  • ASUS Update
  • Anti-virus software (OEM version)



Product Description
ASUS M5A99X EVO - motherboard - ATX - Socket AM3+ - AMD 990X
Product Type
Motherboard - ATX
Chipset Type
AMD 990X / AMD SB950
Processor Socket
1 x Socket AM3+
Compatible Processors
Sempron, Phenom II X3, Athlon II X2, Phenom II X2, Athlon II X4, Athlon II X3, Phenom II X4, Phenom II X6, FX
Data Bus Transfer Rate
5.2 GT/s
Max RAM Size
32 GB
RAM Supported
4 DIMM slots - DDR3, non-ECC, ECC, unbuffered
Storage Ports
6 x SATA-600 (RAID), 2 x SATA-300, 2 x eSATA-300
USB / FireWire Ports
2 x USB 3.0 + 1 x FireWire + 8 x USB 2.0 + (2 x USB 3.0 + 1 x FireWire + 6 x USB 2.0 via headers)
HD Audio (8-channel)
Gigabit Ethernet
Microsoft Certification
Compatible with Windows 7
Manufacturer Warranty
3 years warranty



Product Type
Motherboard - ATX
Chipset Type
AMD 990X / AMD SB950
Max Bus Speed
2600 MHz
Data Bus Transfer Rate
5.2 GT/s
Processor Socket
Socket AM3+
Max Processors Qty
Compatible Processors
Sempron, Phenom II X3, Athlon II X2, Phenom II X2, Athlon II X4, Athlon II X3, Phenom II X4, Phenom II X6, FX

Supported RAM

Max Size
32 GB
Bus Clock
1600 MHz, 1333 MHz, 1066 MHz, 1866 MHz
PC3-14400, PC3-12800, PC3-10600, PC3-8500
Supported RAM Integrity Check
Registered or Buffered
Dual channel memory architecture


HD Audio (8-channel)
Audio Codec
Realtek ALC892
Compliant Standards
High Definition Audio


Network Controller
Realtek RTL8111E
Network Interfaces
Gigabit Ethernet

Expansion / Connectivity

Expansion Slots
1 x CPU , 4 x DIMM 240-pin , 2 x PCIe 2.0 x16 , 1 x PCIe 2.0 x16 , 2 x PCIe 2.0 x1 , 1 x PCI
Storage Interfaces
AMD SB850: SATA-600 -connectors: 6 x 7pin Serial ATA - 6 devices - RAID 0 / RAID 1 / RAID 10 / RAID 5 , JMicron JMB362: SATA-300 -connectors: 2 x 7pin Serial ATA - 2 devices , JMicron JMB362: SATA-300 -connectors: 1 x 11pin eSATAp - 1 devices , JMicron JMB362: SATA-300 -connectors: 1 x 7pin external SATA - 1 devices
1 x PS/2 keyboard / mouse , 1 x FireWire , 1 x LAN (Gigabit Ethernet) , 2 x USB 3.0 , 8 x USB 2.0 , 1 x TOSLINK , 1 x audio line-out - mini-jack , 1 x audio line-in - mini-jack , 1 x microphone - mini-jack , 1 x audio line-out (rear) - mini-jack , 1 x audio line-out (side surround) - mini-jack , 1 x audio line-out (center/subwoofer) - mini-jack
Internal Interfaces
6 x USB 2.0 , 2 x USB 3.0 , 1 x serial , 1 x FireWire , 1 x SPDIF out
Power Connectors
24-pin main power connector, 8-pin ATX12V connector


BIOS Features
DMI 2.0 support, WfM 2.0 support, ASUS EZ Flash 2, ACPI 2.0a support, SMBIOS 2.6 support, UEFI BIOS
Sleep / Wake Up
Wake on LAN (WOL), wake on ring (WOR)
Hardware Features
C.P.R. (CPU Parameter Recall), AMD Cool 'n' Quiet Technology, jack retasking, MemOK!, NVIDIA SLI Technology Support, ASUS Q-Design, Q-DIMM, Q-LED, Q-Slot, ASUS Q-Connector, All-Solid Capacitor motherboard Design, ASUS EPU (Energy Processing Unit), ASUS Q-Shield, ASUS Fan Xpert, ASUS TurboV, ASUS TPU (TurboV Processing Unit), ASUS DIGI+ VRM, Dual Intelligent Processors 2, AMD CrossFireX technology support


Included Accessories
I/O back plate
Cables Included
4 x Serial ATA cable , 1 x SLI bridge
Software Included
Drivers & Utilities, ASUS MyLogo2, ASUS Live Update, ASUS EZ Flash 2
Compatible with Windows 7
"Compatible with Windows 7" software and devices carry Microsoft’s assurance that these products have passed tests for compatibility and reliability with 32-bit and 64-bit Windows 7.
Compliant Standards
Plug and Play, ACPI 2.0a, ErP Ready
30.5 cm
24.4 cm

Manufacturer Warranty

Service & Support
Limited warranty - 3 years
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