I have a 6600gt. I bought the 6600gt instead of the 9800pro because of
this and
this evaluation. As you can see, the 6600gt slightly outperforms the 9800pro.
What is the moral to this story?
If you're going to upgrade your GPU from a 9800xt, then upgrading to a 6600gt would be absolutely pointless -- you would be spending $140 extra dollars with nothing to show for it but another card that performs nearly identical to your older 9800xt.
If you can't afford a 6800gt wait.
RollerCam540
P.S. You may want to buy a better card than the 6800gt so that later on when you get more money you can purchase another card for SLI. The difference between buying the first card now and the second card later is a top of the line card right now will burn a hole in your pocket but that once top of the line card will be middle of the line down the road and it won't cost much to go SLI. I think that's my favorite thing about building a computer -- the ability to see into the future so that I spend my money wisely at purchase time and when upgrade time comes I'm not sorry I purchased the stuff I did. For Example:
Athlon XP 133mhz FSB CPU.
Abit NF7-S MB (Supports 3200+ XP athlon and 200 mhz FSB speed
1x1GB PC3200 DDR @ 266mhz
Enermax 465w 3.3v-36a 5v-36a 12v-33a
then i can upgrade my ram to 2gb (another 1gb stick) when i need more memory down the road
once I can afford a faster processor (333mhz) i can turn the fsb up again (166mhz).
then when i need more power i can upgrade the CPU (again turning up the FSb to 400).
I could have bought an 2600 XP-M but i was just showing you what you would do if you didn't overclock (there are many reasons for this).
during all these upgrades i didn't have to change a single part. the computer is far from antiquated with these updates.
The same goes for A64 and p4 systems.
What I'm trying to say is -- think about the future. If you're going to spend money and you constantly game then the only choice you have is to buy the top of the line card or the next lowest item. It doesn't matter how fast your computer is, without a good (or top of the line) video card your computer will perform mediocre at best. Think your video card over wisely.