Ok so I bought an old beige desktop g3 powermac. I'm loading it up with ram, and I would like to overclock it as well. It is a 266, and according to resources I found, I can get it up to about 500 or 600, 666mhz i think. some using the jumpers on the motherboard, but the only success stories I've heard are people that only up it to about 300. So does anyone know if it would be somewhat safe to try it at the max, maybe with a fan or two? Or should I just stick to a lower, less fun, speed?