Yep a FSP 600W
. I was surprised as well that the 550 was that inefficient. Though if i subtract 20W for a monitor and figure if they quote >85% (82% might be ok) for the FSP I would get 215 * .82 = 176W used by the system. So the TruPower 550 would be 255 * X = 176, x = ~70%. Really that doesn't seem that far off, it isn't one of the high efficiency models. Looking at the stuff on newegg most models are in the 60 or 70% range, if they aren't "high end".
Pretty much pays for itself in 2 years. Overall I'm pretty happy, we'll see how this PSU does over time.