maximus vii gene m.2 pcie Problems to Set Up M.2 PCIe SSD.

R.Jhonny · April 16, 2020

Hello Guys.

I need some help.

I recently bought a PCie SSD. The XPG GAMMIX S5 256GB.

But I've had trouble getting my motherboard to recognize it. I have a Maximus VII Gene motherboard.

In theory the SSD should work well.

In the mobo specs it says: 1 x M.2 Socket 3,, with M Key, type 2260/2280 storage devices support (PCIE mode).

The SSD is an M.2 2280 PCIe Gen3X4

First I change the PCie mode to M.2

When I restarted the PC, the BIOS showed me the SSD information. When starting Windows the SSD was not displayed.

I Restar again and change it to AUTO and when starting Windows, the SSD already appeared. I Restart the PC a second time and the SSD no longer appeared. Neither in the BIOS.

I have noticed this.

If I turn off the PC and turn it on in a few minutes later, the SSD appears. But I feel that it is not running as it should.

If I move any BIOS settings (anything), upon restarting the PC, the SSD is no longer displayed anywhere. I have to turn it off and on in 5 minutes for it to appear and work. As long as I don't move anything from the BIOS, I can restart and shutdown the PC normally, when I return to Windows the SSD is there.

I share a snapshot of the performance it currently has.

I know there is something wrong, because the SSD specifications say that it has readings of 2100MB/s and writes of 1200MB/s.

In the performance tests, the SSD do not reach those speeds. I have removed CSM support and it doesn't change anything.

Fun fact, when I switched from PCie M.2 to AUTO, and turned off the PC, when I started Windows, I did a test of copying a 4GB file and it was copied in 15 seconds. When i restarted Windows, the SSD was no longer displayed. When I got it to appear, I did the same test and the performance declined.

I have RAID0 of two CORSAIR LX SSD's and they work faster than the M.2.

Could it be the SATA configuration I have? I have SATA mode in RAID, not in AHCI.