Hmmmm, the 9800 pro is a much better card than the 9800 SE. Not to take anything aaway from it, its a good card, probably 9600 Pro speeds, but the 'SE' means half the memory bandwidth of the full 9800 Pro, which is a real weak point.
The 9800 Pro is the best all rounder for its price, and you will be able to run gp4 full details etc - as I doo with my 9700 Pro, but remember the framerate is dictated by yoour cpu, so you wont get higher FPS, but yoou will be able to run full AA and AF on top of what you curently do.
I recommend www.overclockers.co.uk for gettng the card, they do a nice Sapphire 9800 Pro Lite Retail for not too many notes, as well as a Powercolour one for a lot less, but they're a bit dubious in ters of build quality, memory used etc. Basically, avoid powerclolour because it might be a 128 bit memory bus, not 256bit. That doesnt mean 128mb of ram - they all have that, and dont bother with a 256mb card.
Asus, Sapphire, ATI, Gigabyte and Hercules are all good brands.
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