Re: Beginner OCing X2 4800+
I'm not sure why you wouldn't want to raise the HTT, as it is the transport between the CPU and the rest of the pc. It is stock at 1000, so you should be fine at 1100 since that is only about a 10% increase. Like sillyeagle said, you can drop the multi for the HTT to 4 and then raise the FSB more. If you don't drop the multi, then you will run into problems with going to high on the HTT.
Your best best is to drop the multiplier for the HTT and the ram below their stock speeds, and slowly increase the FSB until the system isn't stable anymore. Then back it off a touch, and bench it. You may need to add a little bit of voltage to make it fully stable. You don't need to pour on the voltage, just only add enough to keep the processor stable at that FSB.
Once you figure that out, then you can try playing with the HTT and ram and get them back to stock or a little above depending upon your settings.
As you can tell, Prime95 is a really intense CPU test, as it can quickly show if the cpu is going to produce errors. Other tests won't load the cpu nearly as much, and won't always show possible problems.