thx guys.

actually I have no interests with a Quadcore benching wprime/cinebench after playing arround a 4.1ghz+ 8core system.

seems after p30 bios released, new version nv680i ref board is damn good for Quadcore.
and I'll have such a board arrive at hand 3days later.
hope I can have a 5Ghz+ SLI bench on that board