I don't know about teh RAM bottleneck, on the pc listed in my signature battlefield 2 took forever to load, but it ran fine on medium/high graphics. The biggest problem was an occasional studder when the video memory was loading/unloading. But on my other pc with an Athlon 64 3500+, 6800 GT 256Mb and a gig of Corsair 2-2-2-5 PC3200 it ran beautifully on high graphics at 1280x1024. Video memory seems to be the biggest bottleneck in newer games. The texture detail and higher resoltions take up more space and the video memory has to pick that up, and 128Mb doesn't seem to be enough. I would expect video memory to jump in the next couple years. Definitely 1024Mb cars, maybe 2048Mb!
AMD Athlon 64 3700+
ASUS A8N-SLI Premium
2 Corsair 512Mb PC3200 DDR
XFX GeForce 7800 GT 256Mb PCIeX @491/600
XFX NVTV TV Tuner
Soundblaster X-Fi Platinum
Seagate 320Gb SATA2
Maxtor 300Gb SATA
Maxtor 300Gb SATA
19" Dell 1905FP
Plextor 716SA
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