What are these voltages?

[SMAndy]

Hi everyone.

I've installed AMD OverDrive(AOD) to OC my machine, since the BIOS only allows CPU voltage up to 1.3v for some reason.

It's the machine in my sig, for info. Asus M3A78 Pro, with one of those mini-cpu cooler type NB heatsinks.

Within AOD, there are a few voltages that i'm not familiar with. Could you please help me decipher them?

cpu VID for instance. Seen people say that its the base voltage that the cpu needs to run. Why can i alter it then? Any ideas what this really is? my vCore is at roughly 1.48v

NB VID. Northbridge VID? same again for previous question. NB core is at about 1.2v i think.

mem VDDQ. Read that this is the voltage to the output buffers. defaults to 1.8v. What should this be at? I have 4x1GB GeIL 6400C4 Ultra (1.9-2.3VDIMM rated. Runs amazingly well.) VDIMM is currently set to 2.1v

mem VTT. Not a clue about this one. It's about 0.9v default.

Currently, my temps are all awesome. NB gets to about 48 under half an hour of an AOD stress test. Fails after about 15 minutes of Prime95 due to bad readings... I want to try and fix this.

Cheers guys. Hope to hear from some of you soon.

 

[95thrifles]

I wouldnt recomend using any windows based utility for OC'ing, normally causes more hassle than its worth, your bios should allow your voltage to go higher than 1.3, you could always try flashing your BIOS to a newer version maybe. And yes Vid is the voltage its rated to run at stock speed

 

[SMAndy]

I would do it in the BIOS, but currently I can't. I have the latest version... There's forums on the Asus site with loads of people complaining about the inability to OC from the BIOS.

Changes in AOD are being registered in the bios though... It's AMD's own OC software, running with an AMD chipset.

if the VID is to do with running at stock speed, why does the system allow me to change it? is it so that the system looks at it and assumes thats what it should be running at, so runs a bit higher?

If thats the case, then all is good, because I can work with those settings.

Thanks for clarifying that for me... Any idea about the mem VDDQ or VTT?