You are planning on doing a clean install - good choice.
Bios should be set to AHCI (Probably is)
Should use the new Intel RST driver (NEED to check if your chipset is supported, if not you will need to use uSoft default AHCI driver.
Good read on tweeks: http://www.ocztechnologyforum.com/forum/showthread.php?...*-Windows-7-Ultimate-Tweaks-amp-Utilities-*
Probably you would not want to do all.
Should at a min.
.. Set your page file min/max to same vaule
.. Disable hibernation
.. disable superfetch
.. disable disk indexing.
Windows7 should atomatically disable disk defrag and should enable trim.