Enermax EG701AX-VE & QTec Triple Fan 650W
Enermax EG701AX-VE
Retail Name (if known) Enermax Noisetaker 600W Rated Output Power 600W Specification ATX 2.0 Power Switch Yes Input Voltage 110-240V, 50-60Hz Fan(s) 80mm, 92mm Cable runs 24-pin EATX with split
8-pin EPS with convertor
2 x 4-pin Molex, 1 floppy
2 x SATA
2 x SATA
2 x 4-pin Molex, 1 floppy
3 x 4-pin MolexMax currents +3.3V = 34A
+12V = 18A + 18A
+5V = 34ACombined power for +3.3V and +5V 130W Passed certification checks Yes (CB, Taiwan, passing IEC 60950. CE, Taiwan, passing EMC Directive)
The Noisetaker 600W suffered the same problems that the previous Enermax did. Anything over a ~120W combined load on +3.3V and +5V would cause the PSU to shut down. That left ~480W to find just from +12V. Will only 36A, that's impossible. The supply only managed to add another 340W to that 120W imposed limit using the +12V rails, stopping at 460W. Dropping back off of the 120W combined load to see if +12V could go further than around ~28A showed no extra headroom. Just over 27A combined is all the PSU can do.
It seems that the 600W quoted is merely a short-burst peak power. No amount of adjustment could persuade the supply to output more. At 460W efficiency was high and it wasn't very hot, but it didn't make the output power it claimed to be able to do, so it was classed as a failure. The supplied EPS to P4&P4+ convertor is a nice touch.
Recommended system: Mid-range to high-end desktop systems based around P4 (including high-speed Prescott), AMD Athlon Socket A and AMD Athlon 64 and Sempron on Socket 754 and Socket 939 but only if fully observing the ~460W limitations and especially the 27W limit for +12V. That's enough for all current NVIDIA SLI however, and a powerful CPU. Server systems due to EPS.