I've tried every combination of voltages that this board allows, and 305 fsb is the best I can do. The only thing left is to lower the multiplier and hope I can find the other side of this fsb hole (assuming it is a hole).
I'm pretty sure it's the board that's holding me back...
My 975x motherboard from like 2 and a half years ago had a wall around 400mhz... Would not go any higher period. I would hope a chipset that came out a good 2 years after it would be able to go further.
Yeah... From what I've read about the EP43-DS3L, it basically stops at 400. I'm using the latest beta BIOS and that's what let me get past 280 and on to 305. Maybe the next BIOS revision (if there is one) will help...