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If I were you I'd just keep bumping it up until it's not stable. Then back it down and try to test for long term stability. At the rate you're going you'll be at this for weeks.
My methodology is to run the RAM 1:1 at loose timings and spec'd voltage and put the CPU multi as low as it'll go (6). Then raise FSB in increments of 25MHz until it's not stable. Adjust BIOS settings to see how high you can get the FSB (NB, FSB, GTL, etc...don't touch vcore or vdimm). Use P95 to stress test, but don't waste days doing it. You should know pretty quickly where the stability line.
Armed w/ this info you can tackle the CPU freq. Drop the FSB bus speed back down to a reasonable level, and put the multi back up to max. Increase FSB 25MHz at a time until the CPU isn't stable. Add more vcore, rinse and repeat using finer adjustments of 5MHz. Use P95 small FFT to stress test. Again, don't waste days on this. Just do it for 5-10mins, and if it passes move on. Once you get something that seems good you can run it for a bit longer...say 20-30mins. You can do longer stress tests later. You want to get a feel for it first, so you don't waste so much time.
You can now decide which multi you want to run depending on how high you want the FSB. The 10x multi gives you more options.
Next, adjust the memory speed w/ your CPU & FSB locked where you want them. I have an Intel board so I use different dividers to test different speeds, but w/ that nVidia chipset you have a lot more dividers to choose from...some may not work well, so keep that in mind. Play w/ higher speeds vs. tighter timings until you get something you're happy with. I like to use Memset to make real-time adjustments in Windows. Take notes, b/c if it reboots it doesn't save your settings. You can use Everest as a guide to measure your bandwidth/latency, and use P95 large fft for 5 mins or so to stress. It will usually fail very fast if timings are too tight. Once you get the timngs where you want them you can set them permanently in the MoBo BIOS.
Now you can run some stress tests for long periods of time. I usually just go w/ overnight, but you can go longer if you want. Run all 3 P95 tests (small fft, large fft, and blend) along w/ memtest86+.
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