Well it's unlikely it's your Power supply, but it wouldn't hurt to put a good one in anyways.

What's the highest stable overclock you can achieve currently? And remember, juicing the ram for the most FSB won't always get you the most performance.

If you're CPU is truly unlocked, then you can adjust the multiplier. Try something like 14x175 it will still equate to 2450MHZ, but it will give you increased stability. Also disable FSB Spread Spectrum in the advanced bios features (where you adjust your AGP speed and Aperature). Make sure CPU thermal throttling is disabled as well.

If what I said works, and you're stable at 2450 MHZ, keep increasing the FSB from 175 each stable boot until you max out your OC. Go up by 1 or 2 FSB per boot and see how it is. And what are your temps currently?

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