Contents
- 1Introducing the Enermax MaxPro 600 W (EMP600AGT)
- 1.1Packaging and accessories
- 2Connectors & cabling
- 2.1Casing & cooling
- 3Input filtering
- 4Primary side
- 4.1+5 V stand-by rail
- 5Secondary side
- 5.1Build quality
- 6Load testing
- 6.1Loading +5 V SB
- 6.2Hold-up time
- 6.3Combined loading
- 6.4Combined loading ripple
- 6.5Crossloading, overloading
- 6.6Crossloading, overloading ripple
- 6.7Fan speed, temperatures and noise
- 7Conclusion and evaluation
- 7.1Thanks
- 7.2Discussion
Connectors & cabling
All the cabling has black sleeving, and that’s nice. The gauge of all the main wiring is 18AWG, which is also the case of the wires for both the 6+2pin PCIe cables. I think 300 W per the three wires of the +12 V rail is still safe enough, though the connectors could definitely use some gold-plating. Using 20AWG wires is also safe for SATA cabling, but definitely not for four molex connectors. As the connector is limited to 8.5 A per pin, which gives us a total of 34 A, at this current the 20AWG wire would be glowing red. Even under normal conditions this is pretty limiting. For example, with a couple of 15k enterprise hard drives, some of them keep restarting initially because of the enormous startup current draw when they’re hot-swapped. And this unit I use is on an old Liberty with 18AWG wiring. Imagine what would happen if these drives were connected to 20AWG wiring. They would start resetting like crazy as the voltage drops would be insane with the motor start-up currents! Definitely some points off here for the EMP600AGT. Enermax should have used 18AWG wiring even if that meant not being able to use sleeving because of the increased cost.
In total, we have:
- 1× Main ATX (24pin): 50 cm
- 1× ATX 12 V (4+4pin): 60 cm
- 2× PCIe (6+2pin): 45 cm, 60 cm
- 6× SATA: 2× 45 cm, 2× 61 cm, 2× 77 cm
- 4× peripheral molex: 47 cm, 62 cm, 77 cm, 92 cm
- 1× Berg for FDD: 107 cm (uff)
Casing & cooling
The metal chassis of the EMP600AGT is constructed from 0.9mm SECC, and it has a matte black finish (which is most likely a powder coating). The fan grill is an ordinary wired one, which is good as it impedes less during the intake, and causes less turbulence. That generally effects a quieter airflow.
The appearance of the back of this unit is quite similar to the Cooler Master G550M, and indeed it seems to be using the same case as they are both of CWT origin. Almost the entire area by the secondary side is covered by solid metal. I think this will negatively impact cooling as was also the case with the G550M. CWT really should do something to improve this casing.
The fan is Enermax’s own ED122512H-OD, a 120mm model which makes use of Twister bearing. Enermax claims it is a self-lubricating bearing with an MTBF of 160000 hours — that is some impressive number. The 400-600W versions of the MaxPro series should have a fan with a maximum speed of about 1800 RPM while the 700W should spin up to 2200 RPM. However I don’t know for sure if it’s the fan that varies by model, or perhaps the controller is set up differently. The overall airflow should be 73.27 CFM with a static pressure of 2.145 mm of the water column. An official noise figure has not been given.
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