Ok some quick results I came up with. The format wil be like this
(Core V/Mem V) (Core Speed/Mem Speed) (01) Score (03) Score (05) Score
A dash is when I didn't test it.

(1.1/1.9) (500/500) (01) 26,269 (03) 13,702 (05) 7,214
(1.125/1.9) (575/750) (01) distorted memory too high (03) - (05) -
(1.125/1.9) (575/700) (01) 27,208 score seems odd (03) 15,555 (05) -
(1.15/1.9) (600/700) (01) crash (03) - (05) -
(1.15/1.9) (600/650) (01) crash (03) - (05) -
(1.175/1.9) (600/700) (01) crash (03) - (05) -
(1.2/1.9) (600/700) (01) - (03) artifacts more core v needed (05) -
(1.225/1.9) (600/750) (01) - (03) vpu recovery (05) -
(1.25/1.9) (625/750) (01) - (03) vpu recovery (05) -
(1.175/2.0/2.0 I/O) (600/700) (01) - (03) artifacts (05) -
(1.2/2.0/2.0 I/O) (600/700) (01) - (03) artifacts (05) -
(1.3/2.0/2.0 I/O) (650/775) (01) - (03) crash (05) -
(1.325/2.0/2.0 I/O) (650/775) (01) - (03) core artifacts (05) -
(1.3/2.0/2.0 I/O) (625/775) (01) - (03) core artifacts (05) -
(1.275/1.95/2.0 I/O) (625/775) (01) crash (03) 16,176 (05) - (tried again after 01 crash now crashes when doing so at same settings)

I'm going back to my low voltage 575/700 and doing some more tests and see what I can come up with.

Now there is something totally messed up a as you can see. Take a look at those Vcores go up with the slight increase in speed. And this is definatly not a heat issue, bearly reaching 47C under load! 34C is idle. Room/case temp at idle is around 24C currently.

Also I've come to the conclusion I really have to sit next to my desk when doing the 01 test. Sometimes it rests the core to default but continues the test, thats nice at least sometimes I don't currupt the DirectX driver and have to restart

Really not 100% what the hecks going on. One time it works the next time it doesn't when I set it. Either the drivers are bugged up, the bios is messing with it, or overclocker tool is screwy

Anyone got a newer version of ATI tool besides 8 that you can OC/Temp Read/Up Voltage in?