What is the default core voltage on at x1900xt, when running at its default 625mhz?

[PingSpike]

Thanks.

I've been trying to setup the 2d/3d overclocking mode with my own fan speeds and the video card craps out when I set it up to the stock settings. The voltage control says 1.2v for the core and 2.0 for the memory. I'm thinking that is suppose to scale up as well.

 

[jiffylube1024]

Hmm, I'm not sure if the voltage scales or just the clockspeeds. 2d clocks are 500/600.

 

[Sentry2]

Yes, the vgpu scales down to 1.2v I think. The memory stays the same at both 2d and 3d clocks. I can't remember the 3d vgpu...but I think it's 1.35v or 1.4v.

Let me check real quick on the 3d vgpu.

 

[Munky]

The 3d core voltage is 1.4. The mem voltage is the same for 3d as for 2d.

 

[PingSpike]

Thanks for the clarification guys. That would explain my problem.

 

[MrSpadge]

Hey guys,

I've been waiting for RV570 because it should consume much less power than R580. Now I'm reading that you can change the voltage of X1900XT by software - that would actually be GREAT! How can you do it, with ATI tool? Which voltages are offered? What i'd like to do: underclock the XT a bit (something above 500MHz) and lower the core voltage considerably. That should get the card into the 70 - 80W region, let it run much cooler (will be used for 24/7 crunching + some games) and still be faster than the 80W X1900GT.
What do you think, is it possible?

Thanks, MrS

 

[Pabster]

Yes ATT or ATITool. Just understand the voltages and what you are setting

 

[PingSpike]

The cores 2D clock is 500 for the core anyway. It runs at 1.2v at those clocks.