Well, I had a little time last night and bumped the FSB to 429 to see if I could hit 3 GHz. No dice. System didn't POST and I had to do a jumper CMOS reset. I tweaked the Vcore up to 1.40 to see what would happen as well. Nothing.
My other settings were Vfsb = 1.4, Vg(mch) = 1.35, Vram = 2.0 at 1:1 and 5-5-5-15. Maybe I should have relaxed the timings a little? I am weary of upping this Vram to 2.1 or 2.2, it is only rated to 2.0.
At any rate, I may give it some more effort next week. It just appears to me that this memory does not want to overclock at all, even only up to 858 MHz.
I'd have to question 3 different parts. CPU, mobo and/or ram. As I mentioned, I'm running a 430 FSB with default vocre (1.3250) with zero problems. Remember, not all CPUs are created equal. The Biostar board is supposed to be a great OCer, and my results are off the Giga S3. Not saying its an issue, but could be. Might test the ram with memtest, just to be sure it's ok as well.