https://forum.asrock.com/ Copyright (c) 2006-2013 Web Wiz Forums - All Rights Reserved. Thu, 23 Apr 2026 10:04:57 +0000 Tue, 17 Dec 2019 00:03:02 +0000 http://blogs.law.harvard.edu/tech/rss Web Wiz Forums 12.04 360 https://forum.asrock.com/RSS_post_feed.asp?TID=13160 https://forum.asrock.com/forum_images/web_wiz_forums_black.png https://forum.asrock.com/ https://forum.asrock.com/forum_posts.asp?TID=13160&PID=71159&title=very-bad-speed-with-nvme-drive#71159 Author: John22
Subject: 13160
Posted: 17 Dec 2019 at 12:03am

I did some testing and found something strange ... I unclicked the disk cache, set 9 passes, did a test getting low write speed as expected. Then, clicked the disk cache, did the test and got reading @ 5 GB/Sec and Writing @4.3 GB/Sec. I thaught I got it! Did the test again and again with all parameters you can imagine and writing felt back to exactly 1.02 each time.   

I Looked at Task manager and saw the CrystalDiskMark disk usage reading was Ok when reading but CrystaldiskMark disappears from Task Manager when doing writing test. I decided to look at ATTO disk. Everything is consistent with this software test. I get a bit lower values which is known, but consistent values close to 4.0GB/s for writing and 4.4GB/sec for reading.

So to me the CrystalDiskMark 7 version is buggy .. End of problems ! Thanks]]> Tue, 17 Dec 2019 00:03:02 +0000 https://forum.asrock.com/forum_posts.asp?TID=13160&PID=71159&title=very-bad-speed-with-nvme-drive#71159 https://forum.asrock.com/forum_posts.asp?TID=13160&PID=71136&title=very-bad-speed-with-nvme-drive#71136 Author: gizmic
Subject: 13160
Posted: 16 Dec 2019 at 2:03pm

heres mine different drive but pretty much the same reason why its slow



first, cache enabled
second, cache disabled
third, cache disbled + razer synapse off
fourth, cache enabled + razer synapse off

or to get best score without fiddling with anything i run the test with 9 passes]]> Mon, 16 Dec 2019 14:03:44 +0000 https://forum.asrock.com/forum_posts.asp?TID=13160&PID=71136&title=very-bad-speed-with-nvme-drive#71136 https://forum.asrock.com/forum_posts.asp?TID=13160&PID=71135&title=very-bad-speed-with-nvme-drive#71135 Author: gizmic
Subject: 13160
Posted: 16 Dec 2019 at 1:44pm

seems about right when you run it again with it enabled it will run closer to max speed if it doesn't then you need to open your task manager to see whats using disk & memory activity

in my case to get max speed on crystalmark i need to close razer synapse and run the bench ]]> Mon, 16 Dec 2019 13:44:46 +0000 https://forum.asrock.com/forum_posts.asp?TID=13160&PID=71135&title=very-bad-speed-with-nvme-drive#71135 https://forum.asrock.com/forum_posts.asp?TID=13160&PID=71132&title=very-bad-speed-with-nvme-drive#71132 Author: John22
Subject: 13160
Posted: 16 Dec 2019 at 12:49pm

Here's the result without cache : Reading 4.988 GB/sec writing 0.318 GB/ sec.

Not what you expected. ]]> Mon, 16 Dec 2019 12:49:24 +0000 https://forum.asrock.com/forum_posts.asp?TID=13160&PID=71132&title=very-bad-speed-with-nvme-drive#71132 https://forum.asrock.com/forum_posts.asp?TID=13160&PID=71131&title=very-bad-speed-with-nvme-drive#71131 Author: gizmic
Subject: 13160
Posted: 16 Dec 2019 at 12:12pm

you totally ignored what i said

disable cache ]]> Mon, 16 Dec 2019 12:12:46 +0000 https://forum.asrock.com/forum_posts.asp?TID=13160&PID=71131&title=very-bad-speed-with-nvme-drive#71131 https://forum.asrock.com/forum_posts.asp?TID=13160&PID=71130&title=very-bad-speed-with-nvme-drive#71130 Author: John22
Subject: 13160
Posted: 16 Dec 2019 at 11:51am

I forgot, disk is 13 % full ...

There's something wrong somewhere for sure. ]]> Mon, 16 Dec 2019 11:51:06 +0000 https://forum.asrock.com/forum_posts.asp?TID=13160&PID=71130&title=very-bad-speed-with-nvme-drive#71130 https://forum.asrock.com/forum_posts.asp?TID=13160&PID=71129&title=very-bad-speed-with-nvme-drive#71129 Author: John22
Subject: 13160
Posted: 16 Dec 2019 at 11:44am

If you search the web a bit you will easily find that Sabrent nvme 4.0 t TB speeds are ALL validated with Crystal disk Mark and all use 1GiB file size. Writing speed is then around 5.0 GB/sec and Writing speed is around 4.2 to 4.4 GB/sec.

Also I remember having seen scores like that. I forgot to mention memory : 16GB G.Skill CL16 Trident z Royal 3600.    ]]> Mon, 16 Dec 2019 11:44:11 +0000 https://forum.asrock.com/forum_posts.asp?TID=13160&PID=71129&title=very-bad-speed-with-nvme-drive#71129 https://forum.asrock.com/forum_posts.asp?TID=13160&PID=71128&title=very-bad-speed-with-nvme-drive#71128 Author: gizmic
Subject: 13160
Posted: 16 Dec 2019 at 10:31am

its normal when you have caching enabled and testing over a huge file]]> Mon, 16 Dec 2019 10:31:17 +0000 https://forum.asrock.com/forum_posts.asp?TID=13160&PID=71128&title=very-bad-speed-with-nvme-drive#71128 https://forum.asrock.com/forum_posts.asp?TID=13160&PID=71126&title=very-bad-speed-with-nvme-drive#71126 Author: John22
Subject: 13160
Posted: 16 Dec 2019 at 9:36am

Hello,

I do have a Phantom X X570 motherboard, 3900X cpu and Sabrent nvme4.0 1TB drive in the first slot, which is directly connected to CPU. OS is W10 pro and everything (AMD drivers, W10, Bios 2.70, etc.) is up to date. Sabrent doesn't have their own driver, Microsoft's one is used.

When running Crystal disk mark 64 I get good reading speed 4.999 GB/s but only 1.020 GB/s when reading 1 GB file. I checked the drive temp and HWinfo64 shows only 38oC. So throttling is not the culprit.

I've searched the web but cannot find what's wrong. When I set up the system 3 months ago, I remember having good read and write speeds.

What could I check ?

Thanks

]]> Mon, 16 Dec 2019 09:36:52 +0000 https://forum.asrock.com/forum_posts.asp?TID=13160&PID=71126&title=very-bad-speed-with-nvme-drive#71126