Hey BrumoD, great point, yes the 4 PSUs do look do be 1 per quadrant vs 1 per row. Out of the quadrants in my rack, Q1 (upper left) has the biggest power consumption #s and the most heat.
SO looking by quadrant, MG estimates Quadrant1 draw of 1478 mA +12V | 848 mA -12V | 0 mA 5V. If the case's total specs divide evenly across its 4 PSUs then one PSU should give 2000mA @ +12V, 1200mA @ -12V, 4000mA @ +5V. AND if that's right, then my Quad1 draw is ~75% of +12V capacity, 70% of -12V capacity and 0% of the 5V capacity. Am I looking at this right? Are those %s high enough to be making a lot of heat?
Looing at the total case (all 4 PSUs) my draw vs capacity is about 55% usage at +12V, 52% usage at -12V, and 0% at 5V. SO, while I have lots of power headroom in the case overall, maybe I'm pushing 1-2 PSUs too hard and getting excess heat as a result...
What do you think of the #s above?
Thanks!