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dazevanz · ‎12-04-2015

Hi guys sorry if this is in the wrong place, I'm new here.

Ok so I have a problem with overclocking my 5930k on rampage v extreme board since I upgraded to sm951. I'm new to overclocking so any advice would be great. Iv had my system a while and using xmp is no issue with my 32gb gskill 3000mhz ram. Everything is fine until I try overclocking. I have read that nvme and overclocking can be difficult.
Is there a guide I could follow with a similar setup as me?

Thanks in advance.

specs:-

i7 5930k
h105
rampage v extreme
32gb ripjaws 4 3000mhz ddr4
980 ti strix
evga supernova g2 850w
sm951 nvme 512gb
rog front base
phantom 820 case

lordo59 · ‎12-04-2015

If you overclock on the 125 strap, the m.2 slot gets dropped to PCIE 2.0 and there is no way to set it to PCIE 3.0 (it needs the full bandwidth).

So overclock on the 100 strap, or get a PCI adapter card for the SM951.

Chino · ‎12-04-2015

Use the multiplier. Don't move the BCLK.

dazevanz · ‎12-04-2015

right ok guys thanks a lot. Also, the pc boots very slowly, 17seconds. With my last 850 pro it was more like 10 seconds. I have fast boot enabled and it is windows 10 clean install using uefi. Is there anything I'm missing? I have made sure my 951 is the only boot option, tried changing anything I can. With fast boot off windows 10 loads quicker but uefi is slower, same vice versa.

lordo59 · ‎12-04-2015

NVME drives take longer to boot due to the drivers. My Intel 750 is like 20 seconds. #FirstWorldProblems

Undermoose · ‎12-08-2015

I had no idea XMP was affecting performance on my NVMe drive...

Sabertooth x99, 4 x 8gb Dominator DDR4-2800, Samsung 512GB NVMe drive, Intel 5930K CPU. I'm not sure the difference is PCIe 2.0 vs PCIe 3.0, but there is definitely a significant impact.

XMP = DDR4-2800mhz 1.25 BLCK

NO XMP = DDR4-2133mhz 1.00 BLCK

sm951 nvme and OC 5930k