I my self am not haveing this problem but it is definatly worth mentioning. Alot of people useing 4.7 and 4.8betas for ATI video cards 9700-9800 type models are haveing "white snow" artifacts in the game. The temporary solution seems to be underclocking the video card by 20 mhz.
Go to rage3d.com msg boards or driverhaven.net to read up on it... Just watch out... Even if you have never had artifacts or problems... Doom can really show you that other benchmarks and stress tests just dont cut it.
Go to rage3d.com msg boards or driverhaven.net to read up on it... Just watch out... Even if you have never had artifacts or problems... Doom can really show you that other benchmarks and stress tests just dont cut it.