Tagan Easycon XL 700w TG700-U35 PSU


Load Testing

In order for the results from all current and future PSU reviews to remain fair and comparable, Overclock3D uses a custom built Power Supply load stress tester.

The tester will be placing the following loads on each of the Easycon XL's rails:

+3.3v - 20a Load
+5.0v - 20a Load
+12v1 - 10a Load
+12v2 - 10a Load
+12v3 - 10a Load
+12v4 - 10a Load

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

Tagan Easycon XL 700w +3.3v Rail Tagan Easycon XL 700w +5.0v Rail

After checking and double checking the results I confirm that the voltages on the TG700-U35 actually increased under load. This is very strange behaviour for a PSU and could mean that voltage output is being traded off against amperage (as voltage increases amperage decreases). Never less, the TG700-U35 produced some good results that show Tagan are taking extra steps to ensure that their power supplies provide good voltages.

Tagan Easycon XL 700w +12v1 Rail Tagan Easycon XL 700w +12v2 Rail

Tagan Easycon XL 700w +12v3 Rail Tagan Easycon XL 700w +12v4 Rail

The same phenomenon can be seen on all four of the TG700-U35's +12v rails, with the voltage actually increasing by around 0.20v under load.

Efficiency Testing

Efficiency tests are performed by measuring the wattage consumed by the power supply at the mains against the power (in watts) consumed by the OC3D power supply stress tester. The results may not be as accurate as those produced by professional testing equipment, but will certainly come in handy when comparing several power supplies against each other.

Tagan Easycon XL 700w Efficiency

The Tagan Easycon XL was placed under a load of 646 watts. This counts for a total of 92% of the power supplies rated output. At this load, the power supply required 810 watts from the mains to produce the 646 watts required by our custom made power supply tester. Therefore the efficiency of this power supply can be found by a simple equation: (646 / 810) * 100, which works out to be an efficiency rating of 79.7%.

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.

Idle Recording - Download
Load Recording - Download

At idle I found the TG700-U35 to be extremely silent with the 120mm fan running at a very low RPM. At load the fan speed increased to combat the extra heat produced by the components, but at no point would I have considered the unit to be noisy.

In my opinion, the TG700-U35 would be a suitable companion for a HTPC system and possibly even a silent PC build.

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Most Recent Comments

17-10-2006, 13:48:57

nice work (although i think if someone can afford to build a rig that needs 700W then efficiency is the last thing on their mind)Quote

17-10-2006, 14:40:15

Nice review mate.

What camera did you get ?Quote

17-10-2006, 14:44:38

Originally Posted by Hyper
Nice review mate.

What camera did you get ?
Fujifilm Finepix something-or-other.

Needed a cam with manual zoom/focus Quote

17-10-2006, 14:48:36

Originally Posted by XMS
Fujifilm Finepix something-or-other.

Needed a cam with manual zoom/focus


1600 ISO?Quote

17-10-2006, 14:49:23

Originally Posted by nathan

Nah its an S series. When i can be bothered to go upstairs i'll let u know Quote

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