Taichi x370 M.2 drive confusion

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   Both slots support NVMe, both slots support booting from them. However if you are using M2_2 slot, your PCI-e 5 slot will be automatically disabled. Now you are using M2_2, so if you plug anything into PCI-e5 slot on your motherboard, the plugged device will not work.
You should be able to get full PCIE Gen3 x4 speeds from both M2 slots at the same time. You probably will need to set certain BIOS settings to switch to x4 speeds for both M2 slots though. You can also test the drive speeds with Crystal Diskmark.

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muziqaz Members Profile Send Private Message Find Members Posts Add to Buddy List Groupie Joined: 04 Jan 2021 Location: London Status: Offline Points: 590	Post Options Post Reply Quote muziqaz Report Post Thanks(0) Quote Reply Posted: 16 Apr 2021 at 7:55pm
	Both slots support NVMe, both slots support booting from them. However if you are using M2_2 slot, your PCI-e 5 slot will be automatically disabled. Now you are using M2_2, so if you plug anything into PCI-e5 slot on your motherboard, the plugged device will not work. You should be able to get full PCIE Gen3 x4 speeds from both M2 slots at the same time. You probably will need to set certain BIOS settings to switch to x4 speeds for both M2 slots though. You can also test the drive speeds with Crystal Diskmark.
	folding@home

Docjon Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: 18 Mar 2018 Status: Offline Points: 110	Post Options Post Reply Quote Docjon Report Post Thanks(0) Quote Reply Posted: 16 Apr 2021 at 3:22pm
	I'm a little confused and I'm hoping someone here can straighten me out. Please bear with me. I built this machine, then immediately took ill and spent 9 months in a hospital and rehab. I'm no longer entirely sure what my thought process was when building it, and I'm only just getting around to needing to upgrade it. The Taichi has 2 M.2 slots, labeled in the manual as M2_1 (closest to the CPU), and M2_2 (closest to bottom of board & Dr. Debug). I have a Samsung 960 EVO Series - 250GB PCIe NVMe, which in the m2_2 slot being used as my boot drive. I'm interested in buying another M.2 SSD, so I've been digging in the manual, but I'm finding it unclear. I'm really confused. 1. Which slot is designed for the NVMe drive, M2_1, or M2_2? From the manual, it looks like it's M2_1, but my 960 EVO is plugged into the M2_2 slot. This is messing with my head. . . is it possible to plug an NVMe drive into a non-NVMe slot, and have it work? 2. Once I get question #1 sorted, I would like to know if adding a second M.2 drive will slow down the first M.2 drive. I know that one M.2 drive is going to have a slower interface, but I thought I read that using both M.2 slots slows down the faster NVMe drive. Here is a link showing the M.2 drive I'm currently using: https://www.amazon.com/Samsung-960-EVO-Internal-MZ-V6E250BW/dp/B01LYFKX41 I appreciate your help, and thank you for your time.
	Windows 10 Pro AMD R7 1700x in an ASrock Taichi x370 G. SKill Ripjaws V, 2 sticks of 8gb 3200, 14-14-14-34 EVGA 1660ti Seasonic G 550w Gold PS