Hey, silent pc members, here is my update. The purpose is clarification and to help us save some money on PSUs. Check out www.qtechnology.net
and compare the two. Remember that I mention Enhance is the manufacturer.
Once you done that, look here at my table:
Q-Tech Model = Enhance Model
ATX-1123B-QT = ATX-1123B
ATX-1125BT-QT = ATX-1125BT
ATX-1125BTA-QT = ATX-1125BTA
ENP-0730QT = ENP-0730
QT-02250 = ENH-0125
QT-02300 = ENH-0130
ENS-0240QT = ENS-0240
ENS-0246QT = ENS-0246
Ah, now that's interesting. I learned it from a friend that used to work for Enhance. So save yourself some bucks and get the PSU from Enhance. Both Enhance and Q-Tech PSUs work well, but perhaps the Enhance works better.
Now, since both are the same, and Q-Tech claims to be quieter. All of us silent pc enthusiasts know about techniques for quieting a PSU. If Enhance lowers the fan rotation for Q-Tech PSUs, then the result is a quieter one, but less efficient. The Q-Tech would get hotter, what I refer to as Unwise But Silent Fan Control. Check it out for yourself.