GTA IV - Quad or Core i7 needed!

[Biker]

Ok.

I have ramped my QX9650 up to 4ghz and am getting outside / driving 32-40 fps (fraps) most of the time but this drops to around 20fps at night (especially when raining)..

With the QX at 3.6 it was noticeably slower ... 27-31 fps and 18 when dark and raining!

System in sig, running at 2560 x 1600...

View distance limited to 31 with 1 gig vram
Detail distance 50
shadows 8

180.84 drivers...