Please check my overclock?

AKM880

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I have a Dell C521 (slimline) that can't be overclocked by the BIOS. So I used a program called ClockGen, since alot of people have successfully overclocked their C521's with this program. Here are the clock settings right now. I am worried about the RAM what do those numbers mean? Is it the speed of the ram? Thanks!

I'm pretty sure its MHz.

CPU - 2191
FSB - 243
RAM - 438
PCIe - 100.10
PCI - 33.37


I'm using OCCT to stress test the CPU clocks. I'm doing it for 45min each time, should I test for longer?
 

AKM880

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Thanks, I overclocked to 2.2GHz and used Prime95 to stress test the computer the whole night. It didn't report any crashed and the computer worked fine. The RAM is sitting at 441MHz, what does this mean anyways?

The original clocks were 1.8GHz, is this a safe o/c?

Is it safe to auto apply the clocks at startup? Or should I always redo them? Thanks.