I tried a few different ways to get up to 4.4GHz.

440x10 and lowered the CPU GTL to X.63 1.40 vcore (Windows) and I still get a BSOD after about a minute of Linpack.
464x9.5 same GTL and same vcore...same result.

I bumped vcore up to 1.45 and still get the BSOD.

So either I get no scaling after 4.3GHz with 1.36v, or there's some settings I need to tweak more. I can't get another 100MHz out of this bad boy...