ASRock Z170 OC Formula Motherboard Review

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Storage Media Performance


Testing the M.2 interface, we installed a second Kingston Predator M.2 PCIe G2x4 240GB drive into the second M.2 slot, M2_2.  Kingston rates this Predator SSD for 1400MB/s read and 600MB/s write with ATTO 2.41a.  Let’s take a look at CrystalDiskMark and see how it rates the performance of the Kingston Predator M.2 SSD.


Legit Bottom Line:  The ASRock Z170 OC Formula has a faster Sequential Read speed on the M.2 interface, however the Sequential Write speed is a bit slower.


SATA 6Gb/s

Connecting the SanDisk Ultra II SSD to a SATA 6Gb/s connection, we continued to use CrystalDiskMark to test it’s performance.


Legit Bottom Line:  The ASRock Z170 OC Formula received the highest score for this test.  The Read speed was 2MB/s faster than the other Z170 motherboard, while the sequential Write was pretty close to 7MB/s.


SuperSpeed USB 3.0


To test SuperSpeed USB 3.0, we will connect a Thermaltake 5G USB dock and a Sandisk Ultra II 480GB SSD directly to the motherboards USB 3.0 ports on the back I/O cluster.



Legit Bottom Line:  On the USB 3.0 connection, the Z170 OC Formula had a slower Sequential Read speed by around 24MB/s.  However, the Sequential Write speed was around 44MB/s faster on the ASRock Z170 OC Formula.


USB Type-C


USB 3.1 is the newest USB revision, and unfortunately, nothing takes advantage of the increased bandwidth.  So there is little point in testing this latest USB innovation at this time.   However, Kingston provided us one of their MicroDuo 3C flash drives, that utilizes the Type-C connector, so we will do a quick test using that connector.  Kingston rates this drive for 100MB/s Read and 15MB/s Write.


Legit Bottom Line:  While the Z170 OC Formula had a bit faster Sequential Read speed, the Sequential Write speed was a bit slower.  Regardless, it was still faster than the official rated speed.


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  • Mike C.

    I’m just gonna outright say it. If you are from Pittsburgh, this is a really tempting board just for the design!


    Maybe I just do not understand the idea of it all, but how are you supposed to have quad graphics cards and still be able to utilize all four cards respectively along with three M.2 drives in a raid??

    Does this not take up more than the available PCI-E lanes allocated for the GFX/disk/HDD’s? I could see with a 2011 socket allowing 40 lanes of PCI-E 3.0 there being no problem…..I just hope someone can enlighten me as I’m always looking at tech just to see what’s avaislble for the ol’upgrade…

    • Georgian

      you the real MVP
      maybe this socket will be used for future generation of cpu on this soket, that will have more pci lanes


        I see in the specifications of this particular motherboard here on this review it has an * (asterisk) next to where it explains the PCI-e throughput. It does not however explain what that asterisk means in lieu of the PCI-e lanes in question.

    • Steven Kean

      It seems that each motherboard does it a bit differently. The GB Z170 board specifically mentions that the PCI-E lane and SATA ports becomes disabled, where the ASRock Z170 OC doesn’t mention the PCI-E lanes, but does mention disabling the SATA ports. Another one I’m testing is like the ASRock board, only disabling the SATA ports. That seems to be the most common aspect of the M.2 implementation.


        Nice. And thanks for shedding a bit of light on this for me. Just did not understand the asterisk by the explanation of the PCI-E lanes in the article clipping they took from the manufacturer. I sure there was something elsewhere explaining exactly what that was supposed to mean…

        • Steven Kean

          Sorry, I’ll watch those next time. The * on the PCI-E slots is just that they support NVME as boot drives, nothing to major.

        • YOUDIEMOFO

          Ah’thank you….