Asus P9X79 Pro review

Chris Finnamore
14 Nov 2011
P9X79 Pro
Our Rating 
Price when reviewed 
inc VAT

A fully-loaded and easily overclockable motherboard for Sandy Bridge Extreme processors



LGA2011, ATX, Intel X79 Express chipset, supports: 2nd gen Core i7 Extreme Edition / Core i7

The P9X79 Pro is the first motherboard we've seen with Intel's X79 Express chipset and LGA2011 socket, which you'll need to use Intel's new Sandy Bridge Extreme chips.

As you'd expect for an enthusiast board for an enthusiast processor, the P9X79 Pro is both hugely expensive and fully loaded. It has four PCI Express x16 slots and supports both 3-way SLI and Quad-GPU CrossFire X, has four SATA3, four SATA2 and two eSATA ports, as well as four USB3 and six USB2 ports on the rear panel and one USB3 and three USB2 headers for further ports. There are also a huge eight memory slots for up to 64GB of DDR3 memory; Sandy Bridge E processors support quad-channel RAM, and the slots are colour-coded accordingly.

P9X79 Pro

It's a bang-up-to-date board, so you don’t get any legacy ports or headers; there are no PCI slots and just two PCI Express x1 slots, one of which will certainly be blocked by your graphics card. You can always use the PCI Express x16 slots with PCI-E x1 and x4 cards.

Setup is simple, as the P9X79 has power and reset buttons on the board, a numeric LED display for status messages and a CMOS reset switch for when things go wrong. The UEFI BIOS has a graphical user interface so you can set the motherboard up with your mouse, and has plenty of overclocking and voltage adjustments; when testing this board, we had no problems getting a Intel Core i7-3960X processor up to 4.8GHz. You should have few problems with cooling, thanks to twin processor fan headers and four system fan headers scattered around the board.

We first ran our benchmarks with 4GB of RAM in a dual-channel configuration, but fitting another pair of DDR3 modules in quad-channel mode made no difference to any of our tests. The board's other headline feature is its SSD caching which, as on the Sapphire Z68 Pure Platinum board, uses an SSD to store frequently-accessed information. SSD caching setup is easier on this board then on Sapphire's; on the Sapphire Z68 we had to set the controller to RAID mode and reinstall Windows on the main disk, before enabling SSD caching in Intel's Rapid Storage utility, but on Asus's board you just have to plug the SSD and a normal hard disk into the two SATA3 ports with the 'SSD caching' sticker, then run Asus' SSD caching utility to turn on caching - no Windows reinstall is required. As with Sapphire's board, with SSD caching enabled the PC booted far quicker (25s instead of 1m 30s) and could read files at a much faster rate, but write speeds were unaffected.

This is a hugely expensive board, and as it's the first Socket LGA2011 model we've seen we don't have anything to compare it to. However, it's fully loaded, easy to set up and let us perform fairly ambitious stable overclocks, so is a good buy nonetheless.

Basic Specifications

Processor socketLGA2011
Form factorATX
Processor support2nd gen Core i7 Extreme Edition / Core i7
Processor external bus100MHz
Chipset north bridgeIntel X79 Express
Chipset south bridgeIntel X79 Express
Passively-cooled north bridgeyes
Integrated graphicsNo
Supported memory typeDDR3 1066, 1333, 1600, 1866, 2133
Maximum memory speedPC3-17066
Memory slots8
Maximum memory64GB
Dual-channel supportyes

Buying Information


Internal Ports

Power connectors1x 24-pin ATX, 1x 8-pin ATX
PCI-E x16 slots4
Dual graphics architecture3-way SLI, Quad-GPU CrossFire X
PCI-E x4 slots0
PCI-E x1 slots2
PCI slots0
Fan headers6
Floppy ports0
IDE ports0
Serial ATA ports8
RAID chipset (max disks)Intel X79 Express (4x SATA II)


Wired network ports1x 10/100/1000
Sound (ports)Realtek ALC898 (6x analogue, optical S/PDIF out)
USB2 ports / headers10/4
Firewire ports / headers0
Legacy portsnone
Other ports2x eSATA
Cables included8x SATA, 1x SLI bridge, 1x CrossFire X bridge
Brackets includednone
Software includedNorton Internet Security 2011

Setup and Overclocking

Voltage adjustmentCPU/RAM/Chipset
CPU clock max adjustment57MHz

Read more