ASRock X99 Extreme11 Motherboard Review – Quad X16 SLI/ Crossfire Gfx and 6.1GB/s Speeds


As a review resource, we have been fortunate to have had eight HGST SSD800mm 400GB SAS 12Gbps SSDs in our hands since even before the release of 12Gbps SAS drives.


Checking out AS SSD with a single drive, we can see that we are getting even better performance through a single drive, than we did with the Z87 Extreme11 test results:

ASRock X99 Extreme11 12Gbps SAS Tests Throughput AS SSDASRock X99 Extreme11 12Gbps SAS Tests IOPS AS SSDTaking a closer look at these eight drives in a RAID 0 combination, we can see that AS SSD wasn’t quite intended for testing at this level as performance doesn’t scale quite as expected:

ASRock X99 Extreme11 12Gbps SAS RAIDx8 Tests IOPS AS SSD ThroughputASRock X99 Extreme11 12Gbps SAS RAIDx8 Tests IOPS AS SSD IOPSWe would have like to see throughput up around the 6GB/s mark, as well as IOPS above 500K.  Regardless, we can remember a point in time when one could never have imagined these type of speeds being pushed through a consumer motherboard.

IOMETER 1.1.0-rRC1

Relying on IOMeter, we can see that throughput scales much as expected, providing even better performance than we had seen previously.  Testing is set up with 8 workers, a 20GB file size, 64QD and normal cycling to run all selected targets for all workers.


ASRock X99 Extreme11 SASx8 IOMeter 61GBs 128Kb Rd


ASRock X99 Extreme11 SASx8 IOMeter 4145GBs 128Kb Wrt

Although our throughput was a bit higher than our previous testing on the Z87 Extreme11, IOPS tested dropped just a bit, however, is still a respectable 600+K


ASRock X99 Extreme11 Iometer 4k Rd 669K IOPSIOPS WRITE

ASRock X99 Extreme11 Iometer 4k Wrt IOPS 127KIf you take a close look at this picture of the system with the HGST 12Gbps SAS drives, you just might note that we have doubled up on the EVGA 770 GTX graphics card and pushed both into a x16/x16 SLI solution.  As well, one cannot see the Intel P3700 NVMe SSD or both of the Samsung XP941 M.2 PCIe X4 SSDs.  My original intention was simply to start playing with SLI to improve the 3D Mark results that we saw earlier, but I couldn’t help but try to push PCIe just a biot.  Considering that both GFX cards are also teamed up with the PLX PEX chips, this was pretty much a self-defeating effort; the system runs without skipping a beat.


As for PCMark 3D Mark, we saw our tests jump two levels higher from Sky Diver to Fire Strike Extreme, and even then, we were still tested with higher marks than 97% of systems tested and scores submitted.


  1. blank

    This board is heavy on the “drool” factor!!

  2. blank

    It doesn’t have 4×16 SLI. That is a marketing ploy/lie (at least in that context). Those PLX chips are useless in that scenario. They are only useful when your PCI-E cards aren’t all going to be in use at the same time. They are much more useful for storage than graphics.

    • blank

      You might want to take a look at the ASRock video that tests it. Perhaps we should have posted it.

    • blank

      It’s worth mentioning that with graphics 4×16 PCI-E 3.0 doesn’t really make much of a difference anyway, as graphics cards won’t use all of the bandwidth, especially when you consider how poorly 4-way SLI/CrossFireX scales in comparison to 2, or even 3-way.

      The 4×16 is absolutely much more of a factor in terms of storage than graphics, but that has little do to with whether or not the board can actually utilize the function across four graphics cards simultaneously .

  3. blank

    compared to striker 2 extreme this is nothing

  4. blank

    MB Manual:

    It will be great next year when M.2 Interfaces are more common and even better capable.

    ASUS’s M.2 Interface seems to only support ONE short Card but the X99 Extreme11 accepts 2 Cards from 3 to 11 cm long. I see a new RACE to support longer Cards in greater quantities.

    It would be neat to see each of the X99 Extreme11’s M.2 Ports double stacked, so we could get 4 Cards on the MB. Hang a couple next to each rack of DIMMs for a total of 6 Ports.

    ASUS claims they have a RAMDisk that is 20x times faster than SSD, (like on their Maximus VII Formula MB), now we need to work on getting 10G Ethernet on these MBs (it goes without saying we want 10G Ethernet in our homes, at a low cost – Hint: Local Cable Provider). Then the last battle remaining is efficient 4-Way scaling.

    More than some people need, here we come !

  5. blank

    I’d really like to see Les, do a test on the Asus Maximus Hero VI with the Intel DC P3700

  6. blank

    Asus or anyone please send Les the new Asus x99 Rampage V Extreme Motherboard so he can perform a review on it

  7. blank

    does this motherboard support install windows on a M.2 RAID 0 configuration?

  8. blank

    Thank you for the review.
    I need a sustained sequential write of 3.2GB/s on a raid 0 with 8 Samsung SSD 850 Pro 1TB.
    Do you think this board can help me?
    thanks !

Leave a Reply

Your email address will not be published. Required fields are marked *