I have a 3500+ venice processor and a A8N-SLI Deluxe motherboard. I cant seem to get a higher increase in the processor than 10 percent because its a bottle neck processor. Do I need a a older bios? I am currently using version 18. I dont know what to do anymore. Any suggestions on what to do would help.

Welcome to the board. What Vcore are you using?

are you trying to use preset OC's or do it manually? did you try lowering the HTT multiplier?