X399 gaming M.2 Speed
Printed From: ASRock.com
Category: Technical Support
Forum Name: AMD Motherboards
Forum Description: Question about ASRock AMD motherboards
URL: https://forum.asrock.com/forum_posts.asp?TID=12243
Printed Date: 30 Jul 2025 at 5:38am Software Version: Web Wiz Forums 12.04 - http://www.webwizforums.com
Topic: X399 gaming M.2 Speed
Posted By: Rayblade
Subject: X399 gaming M.2 Speed
Date Posted: 20 Aug 2019 at 2:22pm
Hello, here is a problem. I have two same 970 EVO M.2, but when I add another one on board, the second one speed is like a SATA2 3GB speed. Indeed, the maximum speed is about 265MB/s Read an 240MB/s Write. Out of the standard performance. What should be the problem of my board? Please help me,Thank you!
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Replies:
Posted By: ASRock_TSD
Date Posted: 20 Aug 2019 at 2:33pm
Dear Rayblade,
Greetings, this is ASRock TSD.
For this question, we have some suggestions for you to check your system:
1. Please enter the BIOS setup and press [F9] to load BIOS default setting.
2. Remove the other storage devices, only connect one M.2 SSD and configure it as a system disk to verify the SSD performance.
3. Connect the M.2 SSD to other M.2 slots by turns to verify the M.2 speed.
4. If possible, please format the SSD and check the result again; verify if the performance is related to storage data.
5. If possible, please install the M.2 SSD to other systems to verify.
Thanks!
All the best, ASRock TSD
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