M.2 NVME SSD on H170M Pro4S

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   Hello,
my Samsung SM951 NVME SSD, which is connected at the M.2 Slot, cannot use it's full potential of about 2000 MB/s reading and 1200 MB/s writing speed.

Instead it performs at around 1500 (reading) and 600 (writing).

So it looks like it only uses two lanes.

I would like to use the full 4 lanes. 

Where in the UEFI settings can I change this? The mainboard is supposed to support M.2 with Gen3 x4.

I am using the latest official UEFI Version (1.6). CPU: core i3 6100. Win10 Pro. 

Looking forward to the reply.

Edited by Oranges - 20 Dec 2015 at 4:00am

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Oranges Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: 20 Dec 2015 Status: Offline Points: 4	Post Options Post Reply Quote Oranges Report Post Thanks(0) Quote Reply Topic: M.2 NVME SSD on H170M Pro4S Posted: 20 Dec 2015 at 3:58am
	Hello, my Samsung SM951 NVME SSD, which is connected at the M.2 Slot, cannot use it's full potential of about 2000 MB/s reading and 1200 MB/s writing speed. Instead it performs at around 1500 (reading) and 600 (writing). So it looks like it only uses two lanes. I would like to use the full 4 lanes. Where in the UEFI settings can I change this? The mainboard is supposed to support M.2 with Gen3 x4. I am using the latest official UEFI Version (1.6). CPU: core i3 6100. Win10 Pro. Looking forward to the reply. Edited by Oranges - 20 Dec 2015 at 4:00am

DooRules Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: 05 Nov 2015 Location: Newfoundland Status: Offline Points: 122	Post Options Post Reply Quote DooRules Report Post Thanks(0) Quote Reply Posted: 20 Dec 2015 at 5:25am
	I would just poor over the settings in storage configurations in bios. Maybe there is a setting to change pcie to gen 3 as opposed to gen 2 somewhere also.

Oranges Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: 20 Dec 2015 Status: Offline Points: 4	Post Options Post Reply Quote Oranges Report Post Thanks(0) Quote Reply Posted: 20 Dec 2015 at 10:45pm
	Hi, I just found out that I am actually close to the full potential of the SSD, because I am using the 128 GB Version which is reading 2000 MB/s and writing 650 MB/s max. I'm basically ok with this and do not need any help anymore. Thanks! Edited by Oranges - 20 Dec 2015 at 10:48pm