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M.2 SSD and the bios

rolly123
Level 7

I have the "asus rog maximus x hero (wi-fi ac). I installed 2 samsun ssd 970 plus in each motherboard sockets.

My probelm is this; 

  1. I have 2 ssd 970 plus in my system. In samsung magician it shows 1 read at 3535MB/s and the other one read at 1776MB/s. Why the differences?
    But when I moves large files between the two, I'm lucky if I get 300MB/s transfer speed."
     
    So something might be set wrong in the bios or that is what you get.
     
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1 ACCEPTED SOLUTION

Accepted Solutions

achugh
Level 14

Hi @rolly123 are you using SATA port 5 & 6? See PAGE X of your user manual where it states that M.2_2 shares bandwidth with SATA 5 & ^ ports so if any or both of these ports have a cable connected your M.2_2 will then run at X2 or half the speed instead of the X4.

This matches the information you have shared above so I suspect that you have a SATA cable connected on your PORT 5, 6.

achugh_0-1729139149796.png

I hope this information helps you resolve your issue.

Disclaimer: I am not an ASUS support person so my information may be incomplete. Always follow official documentation and material provided by ASUS representatives.

INTEL i9-14900K / CORSAIR VENGEANCE RGB 192GB (4x48GB) 5200 CAS38 / ROG Z790 DARK HERO / ROG TUF GAMING RTX 4090 OC / ProArt PA-602 Case / SEASONIC PRIME TX-1300 ATX 3.0 / CORSAIR MP700 PRO 2TB PCIe Gen5 / CRUCIAL T500 2TB PCIe Gen4 / EIZO CG2700X

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achugh
Level 14

Hi @rolly123 are you using SATA port 5 & 6? See PAGE X of your user manual where it states that M.2_2 shares bandwidth with SATA 5 & ^ ports so if any or both of these ports have a cable connected your M.2_2 will then run at X2 or half the speed instead of the X4.

This matches the information you have shared above so I suspect that you have a SATA cable connected on your PORT 5, 6.

achugh_0-1729139149796.png

I hope this information helps you resolve your issue.

Disclaimer: I am not an ASUS support person so my information may be incomplete. Always follow official documentation and material provided by ASUS representatives.

INTEL i9-14900K / CORSAIR VENGEANCE RGB 192GB (4x48GB) 5200 CAS38 / ROG Z790 DARK HERO / ROG TUF GAMING RTX 4090 OC / ProArt PA-602 Case / SEASONIC PRIME TX-1300 ATX 3.0 / CORSAIR MP700 PRO 2TB PCIe Gen5 / CRUCIAL T500 2TB PCIe Gen4 / EIZO CG2700X