Gigabyte b650 aorus elite ax won’t boot if I enable EXPO

Andr3w · 27 Aug 2023 at 18:07

Having an issue with my new build.

Everything works great, other than the fact if I enable EXPO in BIOS the machine won't boot - I have to reset CMOS (hold metal across the 2 jumpers for 5\~ seconds) to reset the BIOS.

The B650 Aorus Elite AX is flashed to BIOS version F8c. The ram is DDR5 6000MHZ corsair ram, I checked the website before purchasing and it's compatible.

This is paired with a Ryzen 7 7800X3D

Any suggestions?

Tetras · 27 Aug 2023 at 18:21

Andr3w said:
Any suggestions?

Does it set the dram voltage correctly when you enable EXPO?

Andr3w · 27 Aug 2023 at 19:37

Tetras said:
Does it set the dram voltage correctly when you enable EXPO?

If im honest I would have ASSUMED it did, i'm guessing not?

This help?

Tetras · 27 Aug 2023 at 19:43

Andr3w said:
If im honest I would have ASSUMED it did, i'm guessing not?

I'm not familiar with that bios, but it looks like it is running at 1.1 (I'd go into advanced voltage settings), when Corsair rate the memory for 1.35? Though, the profile clearly says "1.350" so it is being picked up somewhere.

Brizzles · 27 Aug 2023 at 20:09

Yep DDR-VDD change to 1.35, same with DDR-VDDQ ( can be less but keep the same for testing )

DDR-VPP leave at Auto ( 1.8 is correct )

Andr3w · 27 Aug 2023 at 22:32

Brizzles said:
Yep DDR-VDD change to 1.35, same with DDR-VDDQ ( can be less but keep the same for testing )

DDR-VPP leave at Auto ( 1.8 is correct )

Oh wow that easy eh? Wonder why it doesn’t auto change those settings when you enable xmpo?

Andr3w · 28 Aug 2023 at 09:17

Brizzles said:
Yep DDR-VDD change to 1.35, same with DDR-VDDQ ( can be less but keep the same for testing )

DDR-VPP leave at Auto ( 1.8 is correct )

Ok I think that worked! Windows task manager > performance > memory is now showing Speed: 6000MHz