Enermax Infiniti 650W
by Christoph Katzer on September 11, 2007 4:00 AM EST- Posted in
- Cases/Cooling/PSUs
Test Setup
As usual we are testing with our Chroma programmable loads to fully load each rail to a specific amount. This is important to get truly accurate results and not merely approximate values. The tests are conducted in two different temperature environments. One is a normal room temperature of 25-26°C, while the second environment goes from room temperature and increases steadily up to 50°C. Especially during the higher temperatures we will see how good the power supplies are and what they're really made of. Components inside will perform much worse at higher temperatures, but we expect any good quality PSU to deal with such test conditions without failing.
Note: If you would like to know more about our testing methodology, equipment, and environment, please read our PSU Testing Overview.
The lower voltage rails remain very nicely inside specs. The standby rail starts a little on the high side with about 5.17V, but that's no problem at all. No rail even came close to the lower limits.
Simply stated, Enermax has very high voltages on the 12V rails. As can be seen, the test starts at around 12.39V which is quite high (though technically within specs). Since the output starts so high, the drop as load increases doesn't even bring the voltage under 12.00V and only in the case of the 12V3 rail did we actually see the voltage dropping close that amount. One year ago we tested a first sample of an Infiniti 720W version on a Chroma 8000. A report can be downloaded here for comparison. At that time we were already recording similarly high voltages on the 12V rails, and this obviously continued into mass production.
As usual we are testing with our Chroma programmable loads to fully load each rail to a specific amount. This is important to get truly accurate results and not merely approximate values. The tests are conducted in two different temperature environments. One is a normal room temperature of 25-26°C, while the second environment goes from room temperature and increases steadily up to 50°C. Especially during the higher temperatures we will see how good the power supplies are and what they're really made of. Components inside will perform much worse at higher temperatures, but we expect any good quality PSU to deal with such test conditions without failing.
Note: If you would like to know more about our testing methodology, equipment, and environment, please read our PSU Testing Overview.
| PSU Rail Loading | ||||||
| PSU Load | 3.3V | 5V | 12V1 | 12V2 | 12V3 | Wattage All Rails |
| 10% | 1.40A | 1.68A | 1.38A | 1.38A | 1.48A | 67W |
| 30% | 4.20A | 5.04A | 4.13A | 4.13A | 4.43A | 200W |
| 50% | 7.00A | 8.40A | 6.89A | 6.89A | 7.38A | 331W |
| 80% | 11.20A | 13.44A | 11.02A | 11.02A | 11.81A | 525W |
| 100% | 14.00A | 16.80A | 13.77A | 13.77A | 14.76A | 651W |
The lower voltage rails remain very nicely inside specs. The standby rail starts a little on the high side with about 5.17V, but that's no problem at all. No rail even came close to the lower limits.
Simply stated, Enermax has very high voltages on the 12V rails. As can be seen, the test starts at around 12.39V which is quite high (though technically within specs). Since the output starts so high, the drop as load increases doesn't even bring the voltage under 12.00V and only in the case of the 12V3 rail did we actually see the voltage dropping close that amount. One year ago we tested a first sample of an Infiniti 720W version on a Chroma 8000. A report can be downloaded here for comparison. At that time we were already recording similarly high voltages on the 12V rails, and this obviously continued into mass production.
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25 Comments
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Bozo Galora - Tuesday, September 11, 2007 - link
I am beginning to agree with a poster on another PSU review comment section that your droops near or on the max wattage seem to be more than reported on other PSU review sites, especially 3.3V and 5V.It seems to be an ongoing trend in the AT PSU reviews.
I am waiting to see a PSU review here I can directly compare with another impeccable site with top notch measuring gear.
Just thinking outloud - heh.
strikeback03 - Tuesday, September 11, 2007 - link
We bought 2 of these power supplies from Newegg for new systems at work. In one, the box apparently did get dinged quite hard; the box was dented and the lip at the top on the cable side of the PSU (where you would put screws through into the case if the case has appropriate holes) was bent as well. Also, I would call the fit of the modular cables more than snug, I thought I might break the mounts in the power supply tring to get them to go in. It seems the pins were not very straight in the cables, as once they finally went in once they worked better thereafter. The cables for the Liberty worked much better, unfortunately they are not compatible without trimming.Otherwise they are nice units, and the fan is not audible over the noise of the air handling units in the lab even with the case right next to me and the side panel off.
G20C - Wednesday, September 12, 2007 - link
Could you please tell me what are the lengths of the 24 pin and 4+4 pin connectors on your Enermax Infinity 720W PSU?I have an Antec P182 and I want to buy the Enermax Infinity 720W PSU but I don't know if the 2 cables are long enough.
Makaveli - Tuesday, September 11, 2007 - link
I have the 720watt model and its a excellent PSU and well worth the money. I also don't find it loud at all, and my computer is right next to by bed!!I also believe the 720watt models fan spins at a higher RPM than the 650Watt model.
G20C - Wednesday, September 12, 2007 - link
Could you please tell me what are the lengths of the 24 pin and 4+4 pin connectors on your Enermax Infinity 720W PSU?I have an Antec P182 and I want to buy the Enermax Infinity 720W PSU but I don't know if the 2 cables are long enough.
strikeback03 - Monday, September 17, 2007 - link
Sorry, we have the 650W models, same as this review. I didn't bother measuring, I would assume it is the same as listed here.strikeback03 - Monday, September 17, 2007 - link
Oops, replied to the wrong instance of this comment. Should be below.Bjoern77 - Tuesday, September 11, 2007 - link
Any chance that this one is up for on a soonish review? That would be my fav. against the 650w infiniti.Anyway, nice review, and thx for not reviewing the 720w infiniti again, which is probably the most reviewed power supply of all time..
Christoph Katzer - Tuesday, September 11, 2007 - link
Will have Seasonic S12II next (sorry for the delay) and Seasonic will surely be happy to send me some more for evaluation.Jodiuh - Tuesday, September 11, 2007 - link
Don't they make both the Corsair 620 and PC P&C 610?