Unfortunately, OC options on a dual system are limited- FSB is the only thing that's adjustable. The default is 133 Mhz. Windows is stable at 138, so that's what I run. Not much of an OC, I know. This gives me around 1750 very very hot Mhz per processor though, which is what insipred this idea. At these speeds the temperature hits the mid 50's during 100% load for each processor and then stabilizes. Idle hangs around the mid 40's. The oil is just a few degrees lower in both cases- my first observation about oil cooling was that case temps are much higher and CPU temps are much lower than they would be with an air cooled system.
The CPU fans run MUCH slower in the oil, even though I'm using food-grade mineral oil that's as thin as water. I'm talking about 300-400 RPM...I can almost see the individual blades moving. They might not be doing much for cooling in oil as they would in air, but they probably help with circulation and will look pretty interesting when I find a clear tank to replace the opaque one I'm using now.
