What does everybody think of this?
4.3ghz with 100mhz bclock, memory at 2133mhz. Memory voltage set to 1.5v, IMC set to -.005v offset (so just the smallest smidge below stock); all other values forced to stock voltages (couldn't do the IMC without an offset). The only voltage that truly isn't stock is the CPU, which has a -.080v offset (so considerably lower than stock). Although I guess the offset may get screwed up by turbo mode voltage (I had to give it a .004v offset as it wouldn't take zero for an answer). So net is a -.076v offset under load, with a -.080v offset at idle.
I had the offset as low as .090v, and it ran Prime95 fine for about a half an hour with a game of tribes ascend at -.090v but locked up. So far it's been running P95 with a game of tribes pretty well at -.080v, but I quit that after about a half an hour.
Right now I'm running P95 + two instances of MSI kombustor, again with a -.080v offset. I'm pretty pleased considering the chip is only drawing 1.168v. That's only after it's been running prime for at least 5 minutes too. Normally the voltage under full load fluctuates between 1.16 and 1.168v. Idle voltages go as low as .089 ish, and normally in the .09-1.1 range depending on how many cpu cycles windows decides to waste.
Power consumption at -.080 and -.090 was pretty much the same. Power consumption has dropped by around 20 watts both at load and at idle since undervolting from 1.24v though. The 1.24 was with an offset of +.005v and a turbo offset of +.004v. Temps have dropped too, to the tune of about 3-4C under load for the first hour or so, and 2-3C for all subsequent time periods. The temperature disparity between cores 1 and 2 is also smaller (cores 2-4 were always within a degree or two of each other). Now there is only around a 1-2 degree disparity between all cores.
I wish I could set the chip with a normal, non negative offset and get the strap at 125mhz. It won't post that way, but it posted just fine at a constant 1.26v. I didn't bother to run prime on it though as that extra 20 watts of energy consumption probably isn't worth the trouble for gaming with a single mid range GPU (or possibly even a pair of high range gpus).
EDITED to add:
No LLC of any kind.Edited by SavantStrike - 7/25/12 at 3:00pm