Asus Matrix r9 280X = Voltage Locked?

[b3kab3ka]

Hey, I bought these cards to set up CF a few days ago and don't know how can I tune voltage of GPU? Is it enabled?
GPUTweak is showing me Vcore as 1,219 and real one according to MSI/HWInfo is 1,2560 and there is no way I can change it.

[HiVizMan]

If you are using the same GPU tweak as the screen I posted, which is not my screen by the way but a reviewers screen shot. I have the 290x cards which are not yet released.

So what voltage adjustment you have is what there is right now I think. Have a look at the other reviews on the web and see if anyone else has been able to OC the voltage more. I have not looked yet.

[Danidasanic]

b3kabeka .
swith ur bios in the card ...u2 and u3 is the bios number inside the card

[Zka17]

Yes, that's what I was suggesting before...

Check if you have that switch I encircled with green:



Change the switch position only when you have your system turned off...

[b3kab3ka]

OK I found out what my issue were with the cards
1) There is BIOS switch. U2 version let you use 1,4V MAX, while U3 1,36V (or vice versa)
2) Changing Voltage works, but you need to use GPU Tweak only and monitor with GPU Tweak only as MSI/HWInfo will always show 1,256V
2a) MSI + HWINfo monitoring is fine if you use ROG Mobo, I don't.
3) I don't run cards on such voltages of course. CF blocks my OC possibilites as top card is up to 85 degrees, while lower one up to 72 degrees.
4) I'm running 1,175V with 1100/6600 right now.

[HiVizMan]

Thank you for the feed back and enjoy your card.

[Zka17]

There you go! 🙂