If you have 2 cards you need 550w.
I would replace the PSU later when you actually get the second card. New standards should save on your electric bill.
At the rate the GPU industry is moving, I would keep with single cards for now. Its rumored that in a week we will see a 7800GTX w/ 512MB memory w/ the following clocks:
Core: 550
Memory: 1800
Which is a huge speed bump in a short amount of time.
I think it will debut for $600 to $700.
I would replace the PSU later when you actually get the second card. New standards should save on your electric bill.
At the rate the GPU industry is moving, I would keep with single cards for now. Its rumored that in a week we will see a 7800GTX w/ 512MB memory w/ the following clocks:
Core: 550
Memory: 1800
Which is a huge speed bump in a short amount of time.
I think it will debut for $600 to $700.