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Last reply by 07-04-2022 Solved
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2 Bronze
2 Bronze
816

XPS 8930, NVMe M.2 SSD very slow write speed

This KXG50ZNV256G Toshiba NVMe m.2 SSD drive came with the PC, I was trying to use it as a media cache disk and did a benchmark, the write speed is very slow. ( drive specifications is 2,700 MB/s read and 1050 MB/s write, so I am only getting 1/3 of the write speed)

I checked in BIOS, it is the AHCI mode for the drive.

Internet search led me update the NVMe driver with the OCZ RD400 driver (https://www.reddit.com/r/Dell/comments/628odr/toshiba_nvme_slow_write_speed_fix/), but it made no difference.

Has anyone seen similar behavior and have a fix? Thanks for reading my post!

 

.dell nvme spped.PNG

Solution (1)

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4 Beryllium
691

Hello @delldeal , the slow write speed is a common issue for the Toshiba XG5 with low capacity.  Dell has a newer firmware for your SSD.  Update yours to see if it can improve the performance.

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Replies (9)
7 Thorium
791

This web page may help. Do you have TRIM enabled and is the drive getting close to full? Either of those will also affect performance.




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8 Platinum
781

I have some of these recent Toshiba "XG" SSDs in some XPS laptops, and they are fast for read AND write.

Crystal Disk-Mark is good, but what does Crystal Disk-Info show ?


Registered Microsoft Partner and Apple Developer
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743

Thanks for the tips, I tried those commands before, the NVme disk already had TRIM enabled.

743

Thanks, here is the screenshot from CrystalDiskInfo, should I worry about the health status only at 89%?CrystalDiskInfo_20220701173319.pngstal Disk-Info 

10 Diamond
715

Your SSD has already been in use for 5646 hours, so it's probably starting to show some age.

Trim may be enabled on your XPS 8930, but is the SSD actually being trimmed? Trim is enabled on my XPS 8930 too, but when I recently looked at the Optimize Drives page in Win 10 (21H2), it showed the Dell OEM (Micron) NVME SSD in my PC hadn't been re-trimmed in 459 days!  I manually initiated a trim, and today that page says " 2 days since..." 

You may want to check that out and re-trim, if necessary.  Obviously, I can't guarantee that re-trimming will solve your issues...

Ron

   Forum Member since 2004
   I'm not a Dell employee

4 Beryllium
692

Hello @delldeal , the slow write speed is a common issue for the Toshiba XG5 with low capacity.  Dell has a newer firmware for your SSD.  Update yours to see if it can improve the performance.

689

Thanks, followed your tip and checked, it was trimmed six days agao

688

Thanks, installed the new firmware and see a big jump (74%) in average write performance!

While it still not what can be expected form the original spec (2,700 MB/s read and 1050 MB/s write), I am guessing it is due to the age of the drive, like @RoHe suggested.

thanks, guys, I will live with that till the next update!

CrystalDiskMark_afterNewFirmware_20220701173319.png

670


@delldeal wrote:

Thanks, here is the screenshot from CrystalDiskInfo, should I worry about the health status only at 89%? 


Should be fine. Hopefully the new firmware will help with the Toshiba XG5 SSD wear-leveling.

I double-checked, but turns-out that all my Toshiba SSDs are XG6 (and newer) and 512gb (or larger) ... so not much help there.


Registered Microsoft Partner and Apple Developer
- Like many of you, I can appreciate a good game-engine.
- I answer questions here, but I'm not a Dell employee.
- Consider giving posts you like a "thumbs-up"
- Posting models-numbers and software versions speeds trouble-shooting.
- Click "Accept as Solution" button on any post that answers your question best.
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