230x10 with 1.8vcore is totally stable, haven't tried working the voltages down, but my temps will stay god up to 1.85vcore, anything higher and i'm getting close to 50C loads and i dont dig 50C.
i got DFI infinity mobo, and Mushkin black level 2 bh-5 pc3200, running it at 3.3v in bios 245fsb as of right now, 9x multi, temps are good, 1.9vcore, 35c cpu, 32c sys temp while browsing around, i was gonna do some benching for stability but i just got reminded i have to get up early...