PSU is overkill, but has really helped me overclock on this rig.
CPU - 4.7ghz vcore 1.38 cpu runs at 78C using OCCT CPU line test full load. GPU - +140mhz offset core clock and + 300mhz offset memory clock
For more realistic numbers, cpu usually hit 60 MAX during heavy cpu usage games (Crysis 2, Metro 2033 etc), haven't seen the GPU go above 60 degree yet...
Will be pushing the cpu higher.. more to come! stay tuned!
Edit1: Hi All, running on 5Ghz now. vcore is set to 1.456 with PLL enabled, going to burn in it some more to see if it's stable. Highest time I got is 90C on OCCT CPU line full load. Running games is ~ 70-72C... not too bad at all.