Tagan 2-Force II TG700-U33 700w PSU

Test Results

Load & Efficiency Tests

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.

  0% 50%100%
+3.3v Rail
0w66w 99w
+5.0v Rail
0w50w 100w
+12v Rails
Total0w 323w 646w

Note: The results below were obtained with the Tagan 2-Force II TG700-U33 in "Turbo" mode, hence the recording of only one +12v rail.

Tagan 2-Force II 700w Load Tests

The Tagan 2-Force II 700w provided respectable results in both the 50% and 100% load testing with a maximum fluctuation of 0.14v being exhibited on the +12v rail. Both the +3.3v rail and +5.0v rail proved to be extremely sturdy too - never dipping below their rated outputs. Overall a very good result from the TG700-U33.

Tagan 2-Force II 700w Efficiency Tests

Tagan rate the TG700-U33 at 80% efficiency, and our testing pretty much confirms these figures. Under 323w load the unit was able to manage 79.95% efficiency (bear in mind that our equipment isn't 100% accurate) and increasing the load up to 646w saw the efficiency increase to just above a perfect 80%.

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 underside of the PSU's outer casing at 0%, 50% and 100% load levels using a laser infrared thermometer in an attempt to gauge how much heat is likely to radiate into the end-users case.

Tagan 2-Force II 700w Temperature Tests

As we can see from above, the two 80mm fans inside TG700-U33 do a fairly good job of keeping the unit cool, with the PSU casing temperature rising from an ambient of 24°C to 35°C when under 100% load. This is certainly a much better result than some of the other 80mm fan based PSU's we've tested recently, and on par with many of the 120mm fan based units.

Noise Level Recordings

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

02-08-2007, 08:54:00

Linky doesn't work Quote

02-08-2007, 08:59:38

Originally Posted by name='Bungral'
Linky doesn't work
Bah...fixed Thx for the headsup Quote

02-08-2007, 10:15:26

Good review, a nice read.

The PSU looks pretty nice and performs well, But as said in the view wasn't able to keep up with others when it came to efficiency.Quote

02-08-2007, 10:23:58

Originally Posted by name='Toxcity'
Good review, a nice read.

The PSU looks pretty nice and performs well, But as said in the view wasn't able to keep up with others when it came to efficiency.
Yeah ideally I would have liked to give it an 8.5 for "Performance" but our graph doesn't allow that . 80% efficiency is by no means poor, but there's others out there that will hit 84%.Quote

02-08-2007, 10:57:05

Mr. Smith
I need a new psu as my hiper is blue and I'm not going with a blue theme in my rig refresh...

I think £100 is my price point. Corsair 640w is a big contender, this could be too.

I know you don't need a mahoosive psu but i want to be able to power the upcoming 9800gtx or ati equiv. I want a psu that I can keep for a long time...

Nice review, a few extra touches, the good, the bad and the ugly influence made me laughQuote

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