If you try to draw too much power from your power supply what happens? Will the system not boot? Would it boot but be more susceptible to system errors? Or would individual devices just fail what it can't get the power it needs?
The reason I ask is that according to one of those power calulators (you know, the kind that you input everything on your system that could possible draw power and it tells you how beefy your power supply needs to be) I should be able run my system with a 450w PS. I'm using one rated at 650w. The only reason I'm concerened is that I have more PATA drives and fans than the PS has 4-pin Molex connectors. Two 120mm fans and one drive require the use of y-adapters. From my research before, it seemed that this should be reasonable.
I just want to be sure.
Thanks,
Marc