what graphic card upgrade??

[nVdia]

and nvdia, I have an AMD 64 3500+, 1gig ram, 300gig HD and card running on 400W PS now to upgrade to a card like a 7900 will I have to get a bigger PS?

Whats the make of your PSU and the ampage on the 12 volt rail?

 

[lancec2c30]

I am pretty sure it is an antec, but I am not sure what the amps are on the 12v rail, and have never figured out how to find out cause I dont have the box . I forget what model it was exactly

 

[nVdia]

If you look on the PSU it will tell you. All that info will be labled.

 

[lancec2c30]

wow I was way of on my specs, I must have chnaged my mind on PS last minute when buying, it is a coolmax 450watt PS. I have a ss of the specs

 

[nVdia]

Well your PSU will be able to handle the 7900GT no problem!