Finally I got 3Ghz:
http://valid.x86-secret.com/cache/38494.png
http://valid.x86-secret.com/show_oc.php?id=38494
1.64vcore
like 20 sec after that the system locked up..
What is max safe voltage for my 3700+ in short benchmarks? 3dmark, superpi etc. I'm on watercooling.