The guides actually do really help.
Even among the same CPU sometimes there are variable, you just have to go slow and see what works on yours. You shouldn't raise Vcore until you get a loss of stabibility.
Was the system stable at 3.83? Dual Prime95s run for 6 hours?
If so, why'd you stop?
Increase the FSB by 5-10mhz at a time and check to be sure it's stable. If not, I would loosen your ram timings a bit first before pumping more Vcore, that's just me.

Even among the same CPU sometimes there are variable, you just have to go slow and see what works on yours. You shouldn't raise Vcore until you get a loss of stabibility.
Was the system stable at 3.83? Dual Prime95s run for 6 hours?
If so, why'd you stop?

Increase the FSB by 5-10mhz at a time and check to be sure it's stable. If not, I would loosen your ram timings a bit first before pumping more Vcore, that's just me.