Thanks for the reply! Also, thank you very much for typing up your DSDT guide. I just gave it another read through and everything makes sense with it. Hopefully, I'll get a chance to give it a shot tomorrow. I was finally able to update my BIOS to 2.5 (if you remember, the instant flash utility wasn't working back in the spring), so I'm excited to move forward.

In the guide, though, you don't mention LegacyHDA at all. I've downloaded your modified version from page 3 of this thread and plan to use it with my reinstall. When would you suggest is the best time to copy LegacyHDA over? Just before multibeast, so the caches get rebuilt with it? Also, LegacyHDA goes in /E/E, right? Do I also have to delete all audio codecs from /S/L/E?

With your rig now, sleep is your only obstacle, right? Have you been able to upgrade to 10.6.4 without hiccups? Also, have you enabled QuartzGL?

Have you (or anyone else, for that matter) been able to OC with speed-stepping engaged? I'd read that can cause stability issues.

Sorry for all the questions, and thanks again for all the help!

and, just for the record, my rig is as follows:

ASRock X58 Extreme
i7 920
ZALMAN CNPS9900ALED Heatsink
6GB OCZ Gold (3 x 2GB) DDR3 1600
150 GB WD Raptor X 10,000 RPM hdd (for osx)
4 TB Scratch (2x2TB Hitachi hdds in RAID 0)
Antec Quattro 850w PSU
BFG GeForce 8800 GTS 640 MB