Precision 5510: Very slow SSD performance

We got a Precision 5510 with a Toshiba 512GB SSD ( THNSN5512GPUK ) in NVMe mini PCIe format and the performance on the SSD is dead slow. Boot up takes about a HDD and shutdown takes at least 3 minutes. Windows 7 x64.

Running thru AS SSD the write scores are horrible.

Besides the SSD this also has a 1TB HDD. The OS is installed on the SSD. I believe it is a driver issue.

What could be wrong?

 

I believe Windows 7 lacks support for NVMe so that might be the reason.

 

This Precision was sold with Windows 7.

 

You can see if the Toshiba NVMe driver works with Windows 7.

Also, is the access mode in the BIOS set to RAID or AHCI? I think the NVMe driver works better with the latter (but go into Safe Mode if you switch otherwise there will be a BSOD unless Dell pre-installed drivers for both). There's potentially relevant discussion about NVMe problems with the XPS15 9550 in the XPS forum although most of the XPS owners are using Windows 10.

John

 

Still doesn't mean MS' NVMe drivers are good on old OSes.

 

Tried, it didnt work.

Im having some issues with that honestly. I try using tutorials on switching from RAID to AHCI (editing registry) but they all BSOD.

If Dell provides Windows 7 on this laptop, it should work and be fully supported, either by Dell or Microsoft.

 

Dell aren't the ones who provide the NVMe driver - hence why most modern laptops don't support 7 on NVMe-enabled devices.

 

Should be Toshiba...correct?

 

Toshiba produce the SSD, Microsoft handle the firmware of the OS.

 

So Toshiba should provide the driver.

OCZ's driver has been rumored to work but I cannot get it to work.