I actually had a similar conversation with a customer only a week or so ago. He wanted to check PSU wattage on several of our high end machines as he wanted to add several extra bits to it. Anyway, after checking acer,advent,compaq packard bell and philips, the most powerfull psu we found was 300w. This suggests its not p.bell but all makes (that we sell) that have fairly small psus. I imagine this is due to the new efficient cpu's and the fact that the Graphics cards supplied are only ever the low end model with lower power consumption than the GT or Pro versions require? Not saying its right or wrong merely an observation of several makes of PC all with similar sized PSU's.