POV Nvidia 7800GTX 256MB RAM: worth the upgrade from 6600GT?

Hi.

I can get a second handed Point of View 7800GTX 256MB RAM for 63 euros shipped (93.0982 USD--->but a more realistic value would be 63 dollars (look the P.S. at the end of the post)), and I was wondering if changing my current 6600GT 128MB ram with this card would be a wise thing to do.

Would you recommend me to take the deal? Would I see a difference in gaming on an AMD64 3000+ and 2GB RAM from a 6600Gt?
Do you think that this graphic card will be CPU limited, and therefore can't express it's power with my current cpu?

This is the card (without the games, only the accessories) I can get:

P.S. Often I see that things that cost 100 dollar in US...here cost 100 euros or even more (damn!), so basically would you buy the 7800GTX for 63 dollars?

The only 7800 GTX I can find lists for $219 USD so that looks like a good deal. The card will be some what limited by the CPU, but you should see a gain in performance with the change.

Thanks a lot for the reply.

Just to be sure...I shouldn't have any problems with my PSU right?

I have a LC Power Titan LC6560T V2.0 - 560W

For only $150 USD you can get a 2900 Pro 512MB.

and the 2900pro's flash to XT's very easy. the XT is a $350+ card.