Like it says in the title, I am looking for opinions on the maximum safe voltage I can run on my P5E3 Premium motherboard. I am currently running (3) 40mm fans strapped to the NB heatsink, but since this board doesn't report chipset temps, I am kinda nervous about my current Vmch setting (1.61v). I have tried less, but running the 9x mutiplyer to reach 4.0ghz at 450mhz FSB, required a bump from 1.57v when I was running at 3.8ghz. Adding to the load is the fact that I am running 2x2gb OCZ reaper memory, and believe me, I have tried reducing the Vmch, but the system becomes unstable when I do.
For anyone interested, I am running PL7 and the CLOCK TWISTER on STRING, as STRONGER made almost no difference in benchmarks. I really am interested to know who high some of you have run an X38 or X48 board for an extended period of time with or without board failures. Then I can decide if I should back it down to 3.8ghz
Thanks for the input. Are you running 4gb of memory? I was disappointed, for sure to need that kind of voltage for 450mhz FSB. The thing is, every time I hear people running about the same mem speed, and CPU speed as me, thye usually have a 2x1gb config, which is a, easier load for the NB. Also, what PL (performance level and clock twister settings are you running? Thanks!
I run 4gb, @ 1006mhz, 417fsb mostly. I havea qx9650, and this chipset is quite cpu limited with quads.
But my E6600 # 450mhz, 1.45v, 333mhz strap, PL @ 8. PL @ 7 requires 1.65v, but with the mentioned issues, and the lack of real-world performance benefit, PL8 is good for me.
E8400 @ 520mhz x9 needs 1.55v, again, PL8.
So maybe try that drop down to PL8, and see how much lower the voltage will go...
Any sugestions on what to overclock a q6600 to speeds to match a 3870X2 to lessen bottlenecks? Also, what can I overclock 1000Mhz HyperX to?
I also plan on running air cooling, maybe with case side panel off.
X48 Max Safe NB Voltage for 24/7 use? 
Linear Mode
