I really don't know whether or not the load would be enough to regulate voltage (and each PS is different... I tried two before I found a whopping 150W AT that would be stable with two fans (80mm and 60m) and two #45 lamps attached. ATX may be different (just remember to "hold low" the POWER GOOD line on the wiring harness or it won't fire up!) but if the T-Amp isn't tolerant of higher than expected voltage, I wouldn't try it.

My opinion. YOMV.

Bren R.