Enermax Infiniti 720w Modular PSU

Test Results

Load & Efficiency Testing

To provide our readers with the most accurate results, Overclock3D uses a custom built PSU load tester on all reviews. This not only gives much more reliable results than the testing methods employed by other sites, but also allows for all current and future review results to be compared side-by-side.

Efficiency tests are performed by measuring the wattage consumed by the power supply at the mains (Mains Draw) against the power consumed by the OC3D power supply stress tester (PSU Load). These results may not be 100% accurate, but have proven to be extremely close to results obtained from professional equipment.

As of 01/02/07, all PSU reviews will feature test results for the PSU at 0%, 50% and 100% load. The table below defines the load (in watts) placed on each rail during these tests.

  0% 50%100%
+3.3v Rail
0w33w 66w
+5.0v Rail
0w50w 100w
+12v Rails
0w240w
480w

The results are collected from a Mastech MAS-345 Multimeter which logs its readings via RS232 to a PC.

Enermax Infiniti 720w Load Tests Enermax Infiniti 720w Efficiency Test

The Enermax Infiniti provided impressive results in both the 50% and 100% load testing with a maximum fluctuation of 0.13v being exhibited on the +12v rails. Both the +3.3v rail and +5.0v rail proved to be extremely sturdy too - never dipping below their rated outputs.

Efficiency was fairly average for this type of power supply, managing almost 82% efficiency at a 646w load. As you may have seen in the Infiniti's specifications, the unit is 80+ certified. This essentially means that in any given situation, the Infiniti will be able to manage at least 80% efficiency, hopefully provide you with savings on your energy bill and helping the environment in the process.


Temperature Testing

In our continuing efforts to make power supply reviews more thorough, rather than simply checking voltage stability, Overclock3D will now be recording the temerature of each PSU as it undergoes testing. Temperature recordings will be taken from the PSU's outer casing at 0%, 50% and 100% load levels in an attempt to gauge how much heat is likely to radiate into the end-users case, and how effective the cooling methods are.

Enermax Infiniti 720w Efficiency

With an ambient temperature of 20°c, we can see from above that even at 0% load the internal 135mm fan does a good job of keeping things cool and actually drops the PSU temperature to 2°c below room temperature. The same is true for the 100% load test (taken after 1hr), with the casing temperature being recorded at 35°c (15°C above ambient).

It is certainly safe to say that users of the Infiniti PSU will see very little 'heat dump' into their cases and may even see a reduction in case temperatures when switching from a less efficient power supply.


Noise Testing

Possibly the hardest part of any PSU review is summarising the level of noise given out by the unit. The threshold for what is considered 'noisy' varies from person to person and therefore what I may consider a quiet unit, another person may consider extremely loud. A common way to resolve this issue is to use a dBA meter to measure the units noise level, however this doesn't take into account the pitch (type) of noise emitted and whether it is likely to irritate end users.

For this reason OC3D records all power supplies at idle and load in wav format for you to make your own informed decisions. All recordings are taken at 30cm away from the PSU and outside of a PC case. You will need to remember that noise levels will be reduced by varying amounts once the PSU has been installed inside your PC enclosure.

0% Load Recording - Download
50% Load Recording - Download
100% Load Recording - Download

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Most Recent Comments

05-02-2007, 04:55:49

JN
"Overclock3D have been given an exclusive chance to take a look at Enermax's latest PSU. Combining the features and stability of the Galaxy along with the size of the Liberty, will this PSU be able to impress?"

Link

05-02-2007, 06:38:07

Mr. Smith
I have been eagerly awaiting this review since you sent me a sneaky preview

Firstly, quality review: all encapsulating.

I have to say I am extremely impressed and will no doubt in the coming months bite the bullet and purchase this psu once I have got my pelt settled in.

Nice job Enermax!

05-02-2007, 06:43:07

FragTek
Wow, looks like an awesome modular!

05-02-2007, 07:31:23

llwyd
That really does look like a great psu. I think that manufacturers should try and move away from plastic modular connectors, they look cheap imo Other than that though, a well deserved award

05-02-2007, 09:34:57

ai_01
nice review, i just wish that enermax would take out the gold stripes in the sleeving, i have an enermax psu myself and it just annoys me.

05-02-2007, 09:54:20

JN
Quote:
Originally Posted by name='ai_01'
nice review, i just wish that enermax would take out the gold stripes in the sleeving, i have an enermax psu myself and it just annoys me.
Totally agreed. I'm not a big fan of the gold bling as it doesn't really match anybody's PC's. I'd really like to see manufacturers making separate cable kits sleeved in a choice of colours.

05-02-2007, 11:09:42

FarFarAway
Looks like a sweet PSU, very good job by Enermax

05-02-2007, 18:42:10

NickS
Mmm, the Liberties larger brother . It looks awesome, and performs crazy-good!

Top knotch review too, XMS

05-02-2007, 18:50:42

Ty07allstar
Very nice review XMS.

05-02-2007, 19:23:33

markkleb
Great review. Nice to see hardware that is "Cream of the Crop".

14-02-2007, 13:33:02

Praxis1452
looks pretty nice
Reply
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