DarkenReaper57 - I have a very similar problem. I notice constant HDD activity during Doom 3, especially accessing sounds for some reason. I know this point has been alluded to before, but if your RAM isn't up to snuff (like mine), the HDD is used for virtual memory = slow. Even when I run...
HUGE props to bino13 for the DirectX tip in RivaTuner - with the RT Blitting settings FarCry runs smooth as glass at 1280x1024 with all the goodies (on my modest machine). Wow...hopefully HL2 will follow suite.
Is there anything like this for Doom 3? Still runs like a$$ - lots of hiccups...
Very similar problem - upgrading my PSU to 430W Antec TP (26A on 12V) didn't help.
But here's a noob question - does it matter WHICH molex I connect to the GT as long as it has a 'wire' all to itself? Also, where is the AGP voltage and what should it be set to? (Asus P4P800 Dlx). Finally...