Originally Posted by TwoCables
Then it's time for me to start fine tuning my VCCIO Voltage.
A lot of people also claim that BCLK has to stay at 100MHz. That's also false. I've been running anywhere from 103-106Mhz on mine since I built in March.
It's easy as pie to get that 4.5GHz mark. But to push more, it takes a lot of fine tuning.
I think I'm at 104.55 x 45 right now for 4.7GHz, and DDR3-1950. Was trying to get the absolute most I could out of my RAM. Increasing my VCCIO made no difference to the vcore I needed to run for these clock speeds. It did have a SLIGHT affect on my load temperatures though. Could also have been ambients, or my bad cooler. Either / or.
All I'm saying, is that there's a LOT of tweaking that can be done on SB setups if you get bored with multi only.
A lot of the times, those extra voltage options (VCCIO, PLL, and the other one that's name eludes me right now) also help by raising or lowering to get stable higher. It all depends on the individual CPU. Some need more VCCIO, some need less, same with PLL.
Post right above me proves my point. VCCIO of 1.1, VDIMM of 1.5v, and that's what helps him stabilize.