WD Black SN850X 2TB SSD M.2 2280 NVME PCI-E Gen4 Solid State Drive with Heatsink (Crystalmark Scores)

Are you testing with NVME SSD settings in CrystalDiskMark? I think those are default settings in that test you posted.

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It's under Settings, then there's two middle options; Default and NVME SSD. I believe mmost test their non SATA drives on the NVME SSD setting.
 
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There we go, much better results. I was looking at the numbers from your original post and looked off given it was only 1gb ahead in sequential reads against my P5+, which didn't sound right. But much better now. :)
 
EDIT - Just noticed yours is a 2TB, mines a 1tb - Didnt read the title properly


clCgL69.png


and my Sabrent 512 nvme boot/OS drive pci-e 3 ;
soBYdMt.png

write time is nowhere near the 3400/2000 spec
 
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Anyone know why my 2tb SN850X (non heatsink, motherboard heatsink used) shows lower read speeds?

OS Drive:

2tbsn850x.png


Storage drive:

2tbsn850xstorage.png


edit: downloaded the wd dashboard software and got this result for my os drive. My firmware was already up to date, "game mode" off

2tbsn850x2.png
 
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Z790 HERO, yeah mine will do pcie5 but these are pcie 4 drives so that shouldn't matter, I think.
Are you on win 11? do you have all the latest updates? I paused the newest one because it broke my installation last time I tried it.
 
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Little comparison from my testing:

r0dy227.png


And Rocket 4 Plus 8TB gen 4:


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I suspect the sheer density of the NAND on the 8TB Rocket results in the lower random 4K Q1T1 there as the SATA 8TB is <10MB/s behind.


depends who you read


mine comes out on top there
but Toms Hardware for example says 2nd, Samsung 990 PRO tops the charts

The one thing I don't get with these SSD for gaming articles is that they largely don't matter since the random 4k reads are so close to each other it doesn't result in any visible difference in games. As long as you have an SSD, gaming performance will be largely excellent, and if it's at least a standard gen 3 then that's the minimum req for a few newer games such as Dead Space that have SSD optimisations leading to instant load the moment you reach the main menu.

In practice there's little to no difference between gen 3, 4 and 5 as evidenced by all the reviews and benchmarks comparing gaming and application load times between them all, the latest compilation done by LTT when they tested the new gen 5 SSDs against the others. Raw transfer speeds read or write between all NVMe drives is irrelevant for gaming loading performance, there's no fps difference in games either (see LTT video).
 
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Hmm, your 990 is under 7k too, not a huge deal but it would be nice to see the drives hit the specs.

You're right about not seeing much difference in gaming. Not sure how long it will be before that changes. The new gen 5 drives are underwhelming at this stage due to lack of use and their need for active cooling/large heatsinks.
 
I don't think any drives consistently hit their rated transfer speeds, which is why they always state "up to" when referring to them. It's all down to the busy state of the controller, thermals and whatnot, Sometimes my 990 hit 7000, but typically it's a bit under.

Going forwards we won't see the transfer speeds etc making a difference in games either A general PCIe SSD can load SSD optimised games like Dead Space which recommend a PCIe SSD instantly, and that game doesn't even use DirectStoage. I measured the actual transfer speeds in games like Forspoken that do have v1.0 of DS and registered read speed between 1500-2500MB/s - And those speeds equate to load times under 1 second. Now if you look at the bigger picture in future games, if DS version 1.0 is already loading in even 1 second on average and that's at 1500-2500MB/s, then is anybody going to be able to notice a game loading any faster than that?
 
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