Vista Performance Index, oblivion performance?

Since I've switched to vista I am having some performance problems when trying to play oblivion. I am currently playing it in 4xAA, High image settings, 1024x786. My vista performance index is 5.0, with my lowest sub-score 5.0 which vista says is my memory. I am thinking of buying a GeForce 8800 GTX to solve this and future performance problems, because there is no use in playing a beautiful game with low image quality, that just defies the point and degrades the experience. Should I increase my RAM as well? Or is the vista performance index not accurate for 3d intensive applications but more for overall system performance? My system specs are listed below:

- AMD Athlon 64 Dual Core FX-60
- Asus A8N32-SLI Deluxe Motherboard
- 2 GB DDR 400 RAM
- GeForce 7800 GTX 512 MB RAM
- Creative Sound Blaster Audigy 4
- Windows Vista x64

Vista's overhead takes a huge hit in performance. Where XP had merely dozens of background processes you could easily sort through and deal with, Vista has many, many more such. I would visit the Bethsoft forums, and if you can handle the jackboots of the Nazis, try to get the attention of one of the resident gurus there. I couldn't handle the totalitarianism, and eventually gave up creating new accounts there.

Whenever I can, I run games in W2K just because of the reduced overhead. Oblivion is somewhat faster in Win2000 than in WinXP. NWN2, now, is a great deal faster running in Win2000. My tests of RCT1 and RCT2 turned me completely off of jumping into Vista until after the first major service pack is available. IMO, it's a real dog.  (EDIT - For the unwashed, sub-teenage ones, Windows 2000 and Windows XP are close cousins, separated by only about a year in release age.)

Vista's overhead takes a huge hit in performance. Where XP had merely dozens of background processes you could easily sort through and deal with, Vista has many, many more such. I would visit the Bethsoft forums, and if you can handle the jackboots of the Nazis, try to get the attention of one of the resident gurus there. I couldn't handle the totalitarianism, and eventually gave up creating new accounts there.

Whenever I can, I run games in W2K just because of the reduced overhead. Oblivion is somewhat faster in Win2000 than in WinXP. NWN2, now, is a great deal faster running in Win2000. My tests of RCT1 and RCT2 turned me completely off of jumping into Vista until after the first major service pack is available. IMO, it's a real dog.

Kiwi_1

Well obviously a new GeForce 8 would work better alongside better memory, but if it would help anyway don't u ppl think it is worth a shot? I think I am going to wait for nvidia to release the GeForce 8900 GTX in Q3 2007 if it is not too expensive. Then at the end of the year when intel releases their new chip-set, the X38, with PCI express 2 and DDR3 support then I'll do a pc upgrade with faster memory.Shifty02