| Memory will clock up a bit, but not that much. Your DDR speed is quite good as it is. I got the info from what I know about Nvidia cores, and the technical information you pasted above. Its an interesting card indeed.
450 would be about average, and with some luck, a bit of cooling, and possibly a volt mod, 500+ is possible. Ive seen NV42s on water into the 600Mhz range easily.
Let us know how far you get with it.
__________________ Notebook: Dell XPS M1330 Running Fedora 11 Linux (Leonidas)
Desktop: ASUS Rampage Formula X48
Intel Core 2 Quad Q9450 (Yorkfield) @ 3.51Ghz
4GB DDR2-800 PNY
Albatron 8800GT 512MB
Corsair HX-620 PSU
Running Fedora 11 Linux (Leonidas) Dual Dell 2407WFP  Drivers, Games, Demos, Mods and Overclocking Tools At AOAFiles |