See... where most just focus on the video settings and such, I also concentrate on the windows core system as well... there is always something going on in the background and if you can sniff and disable many of these, you will get a performance bump.
disclaimer: (hee hee, i have always wanted to do this)
IT IS VERY DANGEROUS TO TUNE DOWN TO MY LEVEL WITHOUT FULLY KNOWING EACH MODULE. YOU CAN UNKNOWINGLY DISABLE STUFF RELATED TO SECURITY, VIRUS, ETC. AS WELL AS YOUR HARWARE MYSTERIOUSLY NOT WORKING ANYMORE, I TAKE NO RESPONSIBILITY...
Apply 1 setting at a time and test. This takes a LOT of time. Then set and test, set and test... Patience is key grasshopper... (dammit now I am losing it..

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I also spend about 1-2 hours after installing windows applying my little "cocktail" to the system (reg settings, services, startup, indexing, sys restore, auto update, virtual mem, optimize). I have been using xp since RC1 and windoze since 1.0. Please dont ask me to start speaking Mac either.... Im fully bilingual. I would love to see them come out with 3D'05 for Mac tho'... would definately be interesting

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With 1 destroyed marriage and a lot of locking myself in my office for a few years, I learned how to manipulate Billy's software quite well, I have 20/10 vision, and I can see a single frame drop @ 100fps
I am going to get some arctic silver today and open this baby up and redo some of it so ill be on l8r with more insight.