Overclocking a Dell XPS 600

[dellbert]

Yeah, I know you can't overclock Dells, but anybody here try clockgen on an XPS 600?

ClockGen supports the nForce4 SLI for Intel chipset, and it *seems* to work on an XPS 600. I cranked the FSB up to 220, CPU-ID reported a 10% increase in CPU and FSB speeds, but none of the benchmarks I ran (Si Sandra CPU and mem bandwidth) showed any difference.

 

[Furen]

how's your temperature? You may be having some thermal throttling...

 

[dug777]

well dellbert, you certainly should see an increased with sandra...

 

[dellbert]

I don't think it's thermal. CPUCool indicated 43C, and this system has six fans....

I suspect Dell is doing something sneaky, but during the entire benchmark period, both CPUCool and CPU-ID show the faster clock speeds. And if I try to OC to 266 FSB, it locks up, so I'm sure it's changing something.

I did notice two identical crystals on the mobo, so I wonder if Dell is somehow overriding the clock generator embedded in the nForce4 chipset. But I didn't see any other clock generators on the mobo.