Oh, now I understand why you can all boot fine without DSDT. Your using NullCPUPowermanagement. That equals=no OSPM (Operating System Power Manegment, everything is handled by the "legacy firmware"). Hence no speedsteping and not native power management. And you can reboot because of evoreboot.
Se, that's where DSDT and a well configured bootloader come in! You could have lower temps, and remove two kexts, just to name a few things.
Using a pre made DSDT doesn't always work, RAM addresses can differ, for example. The best would be a tutorial, but my F&*$#%G board still doesn't work well (hardware issue thou, it's the same with windows...). I'm really frustrated about that, since February a I've been having issues with my OCZ G DDD3 RAM, my CPU and (by extension) my motherboard!
Also, that DSDT is OLD (I think it was for BIOS v1.9 or something, LOL) when -if I ever- get my rig working right, I'll do one for the newest BIOS.
The correct GraphicsEnabler string is:
<key>GraphicsEnabler</key>
<string>Yes</string>