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> How easy would it be to overclock a 9800 pro to XT speeds?
Should be pretty easy if the card has decent cooling. XT speeds arent much faster than a stock 9800 Pro. Look at tests in games and the differences are under 1 fps in most cases. Have a look on some older websites comparing the 9800XT to the Pro and you will see theres not much difference.
You would probably get a better result overclocking your CPU and RAM with a higher FSB.
AF in Doom 3 is easy to do rather than performance AF. Requires modding the config file manually.
I have Doom 3 running well at 1280x1024 on medium with 16 AF(set in the config) on a 9800 Pro. Also changed some config settings to increase the picture sharpness, look for lodbias and change that from -2 to 2, default is 0. 2 is very bad, while -2 is the best. If you look in the distance it increases the detail on distance objects.
Thing with Doom 3 is to run the quality set at the start up. Medium is for 128mb cards, running high can have serious pauses during stages of the game such as doors opening. Now people have changed the cache settings in the config file and seem to get smoother game play but I havent managed it.
Ultra is for 512mb cards so even with the new 256mb cards you might struggle with this setting, considering the amount of uncompressed textures that are being moved about.
The thing is to experiment, as people with systems that arent top spec are running Ultra quality well, yet others struggle.
Look into tweaking Doom 3 as you will find that there are settings which may increase the performance, while the graphics arent changed.
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> And will this card play Doom 3/HL2 etc. at a decent quality?
Should do if you dont turn on AA, and use performance AF
And will this card play Doom 3/HL2 etc. at a decent quality?
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