Basically, I have 4x2GB sticks of RAM in it at the moment, which stopped it from booting. I had to fiddle around with the NB and DDR2 voltages to get it working nicely, and if I start mucking around with the frequencies, I suspect it will need some more voltage tweaking and if the CMOS gets reset I'll probably have to rip the additional RAM out to make it boot, then keep readjusting until I get everything working. It's not an afternoon I can be bothered to spend!
I get the feeling that architecture might be less important with Intel's action - if your choice is between a £50 Intel chip and a £50 AMD chip that's slower at stock, but can be massively overclocked, then the option for low-budget enthusiasts is fairly clear. The fact that it's slower at stock isn't too big a deal. If the i7-920 couldn't be overclocked, then I think more people would have bought the X6 even though it's worse when compared per chip, per GHz to the i7.