X800 Pro voltage problem?

[MurdarMachene]

Hello. My specs:

3400+ 64 bit
Asus K8n-e Deluxe motherboard
1 Gig pc3200 ram
X800 Pro

I'm having some performance issues in game, weird stuff, I'm wondering if maybe I'm not getting enough power to my video card. How can I check the voltage (with software, not a voltometer) to my card, also, what should my X800 pro be getting as far as voltage goes?

 

[TrevorRC]

No way to do so. Sorry!

You can do it with nVidia cards, but ATi doesn't have the feature.
I'm voltmodding mine, so I had to go through the trouble.
-T

 

[MurdarMachene]

Oh, snap. Well, do you know what I should set the voltage to in the motherboard, I have 1.5, 1.6 and 1.7 as my options.