Question Why is one of my NVME SSD's very slow with writes.

[snowy2020]

My system is an i9 on a z390 board with 64Gb of DDR4 Ram and a 3080.

The two onboard M.2 slots are taken up with two NVME SSD's - A 2tb Seagate Firecuda 510 and a WD 2Tb.

There are also 2 spinners in there for backup.

The Seagate Firecuda is the C drive (booting Windows 10).
The WD NVME is a storage drive (Drive E).

If I run CrystalDiskMark 8 I get great read and write speeds (as expected) on the WD E Drive but terrible write speeds on the Firecuda C drive.

Trim is on.

They are both connected as Gen 3.

Both have enough space.

AHCI is enabled and running.

I just can't figure it out.

Here is the CDM for the E drive (pretty much what I would expect) :

08.30.2023-15.23.30

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Here is the CDM for the C drive (with terrible write speeds) :

08.30.2023-15.24.25

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Here is the Info for the E drive :

08.30.2023-15.26.14

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Here is the Info for the C drive :

08.30.2023-15.25.10

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Trim definately enabled :

08.30.2023-15.26.54

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If anyone can suggest anything I would be most grateful

 

[Bob.B]

My system is an i9 on a z390 board with 64Gb of DDR4 Ram and a 3080.

The two onboard M.2 slots are taken up with two NVME SSD's - A 2tb Seagate Firecuda 510 and a WD 2Tb.

There are also 2 spinners in there for backup.

The Seagate Firecuda is the C drive (booting Windows 10).
The WD NVME is a storage drive (Drive E).

If I run CrystalDiskMark 8 I get great read and write speeds (as expected) on the WD E Drive but terrible write speeds on the Firecuda C drive.

Trim is on.

They are both connected as Gen 3.

Both have enough space.

AHCI is enabled and running.

I just can't figure it out.

Here is the CDM for the E drive (pretty much what I would expect) :

08.30.2023-15.23.30

World's leading screen capture + recorder from Snagit + Screencast by Techsmith. Capture, edit and share professional-quality content seamlessly.

www.screencast.com

Here is the CDM for the C drive (with terrible write speeds) :

08.30.2023-15.24.25

World's leading screen capture + recorder from Snagit + Screencast by Techsmith. Capture, edit and share professional-quality content seamlessly.

www.screencast.com

Here is the Info for the E drive :

08.30.2023-15.26.14

World's leading screen capture + recorder from Snagit + Screencast by Techsmith. Capture, edit and share professional-quality content seamlessly.

www.screencast.com

Here is the Info for the C drive :

08.30.2023-15.25.10

World's leading screen capture + recorder from Snagit + Screencast by Techsmith. Capture, edit and share professional-quality content seamlessly.

www.screencast.com

Trim definately enabled :

08.30.2023-15.26.54

World's leading screen capture + recorder from Snagit + Screencast by Techsmith. Capture, edit and share professional-quality content seamlessly.

www.screencast.com

If anyone can suggest anything I would be most grateful

Just a test.
Reboot.
Wait a few mins.
Run cdm on the C drive with the browser closed.

 

[snowy2020]

Just a test.
Reboot.
Wait a few mins.
Run cdm on the C drive with the browser closed.

I've tried that Bob - I'm going to try uninstalling the Antivirus (Bitdefender) and even try safe mode to see if that helps.

 

[snowy2020]

One thing that has just struck me - I can't remember what my previous CDM scores were in the past but I have recently changed from a 2080ti GPU to a 3080 - Could that be the issue ?

 

[Misgar]

Windows reads and writes files to the C: drive all the time.

The only fair test is to boot the computer from another drive, then test the Firecuda when it's not being used by Windows.

Don't get too worried about misleading benchmark tests. If you're happy with the performance of the computer, there's no problem.