system specs to play il-2 smoothly at 2560*1600?

[llama_thumper]

Hi guys,

Am doing an upgrade to an i7 based motherboard and would like to find out whether anyone of you is playing at 2560*1600 resolution and what FPS you get with what system. I would like to have a smooth system (with highest detail levels, in particular water) even on the much more detailed maps like Slovakia, where currently I slow to a crawling 15 FPS, and even less on landing/take-off (not to speak of modded maps with UP2.0m). The lowest I can do is 1920*1200, but anything below that looks crap on a 30inch monitor.

I have an 8800GTX which I plan to keep (and upgrade later), but am looking forward to dumping my Pentium D805 (http://www.tomshardware.com/reviews/dual-41-ghz-cores,1253.html) which runs at an overclocked 3.2ghz, but still can't handle it and looks to be the bottleneck.