Have currently tried 4.8 on 1.40 fixed vcore with Internal PLL enabled, no dice. Wont even post with these settings, but can get 4.7 running prime 95 blend for a bit with 1.35vcore...
Spread spectrum disabled.
LLC Level - 2
My power supply is the less current Corsair TX550 (non modular). I dont have a crazy setup with the HD6870 not being overclocked with a single 10k Raptor drive and a 500GB HDD and 4 fans plus the H60. Could my power supply being running out of juice trying to get those speeds? Its never shown to have been bad before but I save the BIOS settings and it just continually restarts itself with either no power the peripherals or shuts down right away. I have to clear CMOS and start over again. I've looked at the draw on Real Temp and its hovering around 95w which isnt much. VID is 1.3861.