I'll probably be running dual PSUs in my next system (I have 2 300W ATX PSUs from my old computers). How much of a load is necessary on a PSU to keep it stable? I figure initially, the one that doesn't power the hardware will have at least 35W on it from various fans and lighting, and that'll probably be 45+ once some other things get installed later. Is that enough? That PSU used to run an old P3 Celery and not much else, so I can't imagine the load has to be too high.