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ASUS P9X79-E WS Motherboard Review

Posted January 14, 2014 by Kenny in CPU & Motherboards


Price at time of Review: $469.99 on Newegg.com


Feature and Performance Packed, Intuitive Software package, Large CPU and Memory Support List and Overclocking Stable


A bit expensive, but makes sense for a workstation motherboard
ASUS Workstation platform hits the mark with great feature and performance capabilities without compromise. This is a must have for all WS builders!
by Kenny
Full Article


The X79 based chipset motherboards have been out for quite some time now and with the recent launch of Intel Ivy-Bridge E chips, Intel didn’t do much at this time to improve the chipset. Some will say it’s not needed and some will advise against this and say go for the new release of the Z87 based chipset. While the Z87 base chipset did have great improvements for the newly release Haswell chips, we still see a strong stand from the X79 chipset.

Today, we are going to take a look at a board from ASUS that has given the X79 chipset a revision which will push the limits and take full use on Ivy-B E. This is the new ASUS P9X79-E WS motherboard. What does WS stand for? Well this is designed to be a workstation motherboard for those serious video encoders or server and workload crunching. Of course, it makes for a great enthusiast’s motherboard too.


While this P9X79-E WS (workstation) motherboard is not as mainstream as some of the newer Z87 chipset based boards, ASUS has put together some unique touches to offer better performance and features. Let’s dive in a talk more about what this X79 chipset based board can do.





    If the P9X79-E WS only has 40 PCI-E 3.0 lanes… then how does it run 3-way SLI or 4-way SLI at x16 speeds? I thought that it had to equal the total number of lanes (i.e., 40)? So then 40 lanes would be achieved by:

    3-Way SLI: x16 +x8 +x16 = 40 lanes
    4-Way SLI: x16 +x8 + x8 + x8 = 40 lanes

    So how do they pull off 3-Way or 4-Way SLI with each card running at PCI-E 3.0 x16 speed (which would seem to require 48 lanes or 64 lanes respectively)? Am I misunderstanding something?


      Hi Archangel,

      This motherboard uses two PLX PEX 8747 chips to increase the number of PCIe 3.0 lanes on the motherboard from 40 to 72. That is how the board is able to handle the full X16 lanes on the PCIe slots.

      or respectively x16/x16/x16/x16 and x16/x8/x8/x8/x16/x8/x8.
      Sorry this information was not touched on in the review, I will be sure to update it.



    This motherboard uses 2x plx chip to achieve 4 way 16x sli , Asrock extreme 11 uses somthing similar.

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