ASRock Forums : NVME Ultra M2 speed at PCIE 3 X 2 only https://forum.asrock.com/ Copyright (c) 2006-2013 Web Wiz Forums - All Rights Reserved. Mon, 14 Sep 2026 14:28:14 +0000 Tue, 24 Oct 2017 21:29:30 +0000 http://blogs.law.harvard.edu/tech/rss Web Wiz Forums 12.04 360 https://forum.asrock.com/RSS_post_feed.asp?TID=6406 <![CDATA[ASRock Forums]]> https://forum.asrock.com/forum_images/web_wiz_forums_black.png https://forum.asrock.com/ <![CDATA[NVME Ultra M2 speed at PCIE 3 X 2 only : I have an X370 Killer SLI board...]]> https://forum.asrock.com/forum_posts.asp?TID=6406&PID=38384&title=nvme-ultra-m2-speed-at-pcie-3-x-2-only#38384 Author: parsec
Subject: 6406
Posted: 24 Oct 2017 at 9:29pm

I have an X370 Killer SLI board with UEFI version 3.20, with a Ryzen 1700X, and Samsung 960 EVO. The 960 EVO works fine and is seen in the Magician software as running at PCIe 3.0 x4.

As said above, in you are using a AM4 APU processor, the M2_1 slot will only run at PCIe 3.0 x2. That is a limitation of the APU processors.

]]> Tue, 24 Oct 2017 21:29:30 +0000 https://forum.asrock.com/forum_posts.asp?TID=6406&PID=38384&title=nvme-ultra-m2-speed-at-pcie-3-x-2-only#38384 <![CDATA[NVME Ultra M2 speed at PCIE 3 X 2 only : Dear myformula,Greetings, this...]]> https://forum.asrock.com/forum_posts.asp?TID=6406&PID=38378&title=nvme-ultra-m2-speed-at-pcie-3-x-2-only#38378 Author: ASRock_TSD
Subject: 6406
Posted: 24 Oct 2017 at 6:11pm

Dear myformula,

Greetings, this is ASRock TSD.


Based on Specification, Ultra M.2 Socket supports Gen3 x4 (32 Gb/s) (with Ryzen Series CPU) or Gen3 x2 (16 Gb/s) (with A-Series APU)
http://www.asrock.com/MB/AMD/X370%20Killer%20SLIac/index.asp#Specification

So please check which CPU installed on the system.

However, there are some suggestions for you to verify:

1. Please refer to the user manual to clear CMOS.(Page 28)
    Link: http://asrock.pc.cdn.bitgravity.com/Manual/X370%20Killer%20SLIac.pdf
 
2. Please make sure all drivers are installed on the system.
    Link: http://www.asrock.com/mb/AMD/X370%20Killer%20SLIac/index.asp#osW1064

3. Please re-install CPU.

4. Please flash BIOS back to P3.00 to check if it related to BIOS version.
    Link: https://www.asrock.com/mb/amd/X370%20Killer%20SLIac/index.asp#BIOS
    How to update: https://www.asrock.com/support/BIOSIG.asp?cat=BIOS8

5. If possible, please install another PCIe NVME device to check. Or install your device to another system to verify.


Thanks!

All the best,
ASRock TSD

]]> Tue, 24 Oct 2017 18:11:44 +0000 https://forum.asrock.com/forum_posts.asp?TID=6406&PID=38378&title=nvme-ultra-m2-speed-at-pcie-3-x-2-only#38378 <![CDATA[NVME Ultra M2 speed at PCIE 3 X 2 only : Connecting EVO 960 500 GB to Ultra...]]> https://forum.asrock.com/forum_posts.asp?TID=6406&PID=38372&title=nvme-ultra-m2-speed-at-pcie-3-x-2-only#38372 Author: myformula
Subject: 6406
Posted: 24 Oct 2017 at 4:17pm

Connecting EVO 960 500 GB to Ultra M2 Socket runs only at PCIE 3 X 2 instead of 3 X 4
Update BIOS to 3.20, Updated Samsung drivers, installed Samsung magician 5.1, removed and re-installed m2 device no help.
Additional info:
M2 drive used as Win10 OS drive
GPU connected to PCIE 2
AMD all in one installed, updated to 17.3
In BIOS M2 device identified under M2_1 (PCIE)
X370 Killer SLI/ac


]]> Tue, 24 Oct 2017 16:17:49 +0000 https://forum.asrock.com/forum_posts.asp?TID=6406&PID=38372&title=nvme-ultra-m2-speed-at-pcie-3-x-2-only#38372