Seegee911

While it is true, you can usually squeeze slightly higher overclock using 2 sticks instead of 4, the fact of the matter is that the 'usability' added by that much ram far outweighs any benefit you might get from the extra 0.05% in speed. I'm using the Corsair Dominator Platinum RGB [CMT32GX4M4C3200C16] which are a Micron E-die I believe. They have stock settings of 3200@c16-18-18, and I'm running 4 sticks at 3600@c16-19-16 with zero problems. The new Ryzen chips have none of the issues with ram timings the previous gen have. 3600 is a pretty sweet spot, because once you start getting much faster, you have to unlink the fclock from the memory clock, and your latency increases considerably. It is best to keep your mem clock and fclock 1:1. The difference from 2 to 4 sticks might be worth worrying about, but honestly i'm getting much better overall use of the machine with the extra ram.

Yeah, I have the 3200 c16 kit, and it works great. In fact i've got it running @3600 with tighter timings than stock, so if you're just running them using XMP, they'll work fine.

Try running Atto Disk Benchmark 4.01 and see what you get... I've noticed a lot of fluctuations in speeds and atto shows it clearly.

Tweak Town just released a new review of the 2tb MP600 here which they ran several different benchmarks including atto, which gave them perfect results. They claim that the benchmarks were done with the drive at 50% capacity, and according to their ssd toolbox screenshots they are also using fw 11.2. I'm going to be reaching out to them to see if they can replicate these issues.

Yeah, that's pretty much what I am experiencing as well. Interesting results from the 16Gb test. There was speculation earlier that CDM read test was causing the drive to heat up, and thus a possible throttle situation during the write portion of CDM. However with Atto, it performs the write test before the read test, but the speed variance only shows on write performance. Read speeds remain unaffected... I will run the 16gig test myself later, and I will be monitoring the temps while I do it. EDIT: I added my 16G test, temps were still fine. 50C or less

Has anyone tried running Atto Disk Benchmark? I'm getting some really wierd results on write speeds which may shed some light on things... The speeds seem to be oscillating... Goes proper speed for a bit, then drops, and repeats... I'll post a screenshot of this when I get home. Atto gives several measurements at various block sizes, which provides more granularity than the basic "one number" output CDM gives... I ran the test several times in sequence with hwinfo updates @ 500ms intervals and temps never went above 52C, averaging 47C. Note that Run #1 and #4 are the exact same settings, but there is crazy variance in performance from one test to the next. If you can run atto, please post your results here

I also have the Asus Crosshair Hero VIII (Wi-Fi)! I updated the firmware to 11.2, and ran some tests. The very first run I did with crystal disk mark gave me reasonable results, but I ran the same benchmark a minute later, and I was right back where we started. I have run it a few more times over the past day, and they're all the same under-performance on the write speeds. I know my way around this board fairly well, and would be happy to help any way I can.

Does anyone from Corsair care to comment on this? While I understand that ssds do slow down to some degree, this is just unacceptable. I don't think silence would be a good move right now. Sweeping this under the rug would make Corsair storage products the "Pinto" of SSDs

I am also suspecting this is related... All of the benchmarks I have seen to which we are comparing, indicate that there is very little used space at the time the benchmark was run.

I have specifically set the m.2 slot from auto to gen4 thinking this may have an influence, as gen 3 will max out around 3.5gb/s sequential.

Yeah, unfortunately my return window is gone so I'm stuck with this. Corsair products are usually pretty solid, but this is my first experience with corsair ssds, and will be my last if this is not resolved. Which is a shame, because many people seek my guidance on hardware.

I have shut down/disabled every single non-essential software, as well as even went as far as disabling services... Still having issues. I even went to performance monitor to check disk activity, and nothing outside of ordinary system log writes. This is really disappointing to see considering the sales pitch of corsair (see Newegg video regarding mp600) and the cost of this drive... Please advise further.

My mobo has two m.2 slots (Crosshair Hero VIII), one tied to the CPU pcie lanes, the other tied to the x570 chipset. I installed mine in the lower chipset slot, leaving the corsair heatsink on, because the first slot requires that you use the mobo heatsink no matter what. Has anyone done any testing on which method provides better cooling?

I too, am experiencing similar issues with my mp600. I will be watching this forum closely