Installed new m.2 SATA SSD, NVMe that came with laptop write speeds are horribly low now

[a.zachman]

Hello,

I got a Gigabyte Aero 15X a couple weeks ago. I installed a new 1TB SATA SSD into the second m.2 port a couple days ago, left Windows on the original m.2 NVMe that it came with.

Prior to the install of the SATA SSD, my NVMe was hitting around 1400 MB/s on sequential read and sequential write benchmarks. Now after I've installed the SATA SSD, my original NVMe SSD is still hitting 1400 MB/s on seq. read, but for some reason the sequential write speeds are abysmal - below 100 MB/s on those same benchmarks, sometimes even below 50 MB/s. The SATA SSD I got seems to be working correctly, sequential write and read of around 400 MB/s.

Here is a benchmark from before I added the SATA SSD, look at the Transcend NVMe drive speeds:

http://www.userbenchmark.com/UserRun/11297126

And here is a bench from after I added the m.2 SATA SSD so you can compare:

http://www.userbenchmark.com/UserRun/11423519

You can see in comparison there the Transcend drive write and mixed speeds have crashed after installing the SATA SSD.

I have tried reinstalling Windows, getting newest chipset and MEI drivers, as well as all the other drivers I could think of.

Anyone have any ideas?

 

[Peter Martin]

when you take out the other ssd, does the performance go back up? I wonder if the nvme slot shares the bandwidth with the sata slots

 

[Lutfij]

Did you make sure you're on the latest BIOS update for your laptop? Regarding your OS, did you recreate the bootable installer using Windows Media Creation Tools prior to reinstalling the OS?

Did you try and see what CrystalDiskMark had to say or are you basing all your results off of userbenchmark?