Thermaltake Pure Power
350 Watt fanless

Scope of delivery:

• power supply
• power cable
• English manual
• Mounting screws

Structure and processing:

The case is completely made of aluminium and the first look into the inner of the power supply shows a high quality 4 layer board. The rest can be found clearly. The power transistors sit next to two gills. The gills are cooled by heatpipes. One of the outer coolers is on the outside and the other one in the inside of the case.

The outer cooler on the outside is as big as a normal 80mm fan and is 63mm long. There should be no case which has serious problems with the installation. The outer cooler is connected to the middle inner cooler (next to the power transistors) by 3 heatpipes. The second inner cooler is connected to the 2^nd outer cooler (inside the case) by 2 heatpipes. This one juts about 25mm at the front of the power supply(in the case).

All cabels have a flex hoses.

Energy demand of the testing system:

current consumption in standby mode: 2 watt
Idle mode: 65 Watt
Idle mode copying files: 78 Watt
PC Mark 04: average 130 watt; max 143 watt
3D Mark 2001: average 155 Watt; max 170 watt
3D Mark 03: average 150 watt; max 160 watt

Installation and start up:

There were no installation problems. It might get a little narrow between the optical drives and the power supply using a small case because the power supply is bigger the standard form factor dimensions usually are.

Preface:

While the market for passive cpu coolers just develops slowly, there are more and more fanless power supplies. This area is booming. Two years ago there were only two fanless power supplies available. Today we test our 10^th fanless power supply! The manufacturers don’t mind the development and the work needed for new versions. Different ideas can be found for the cooling system of the power supply. The user is glad about a bigger variety and the competition between the different brands freshens the market. Although Thermaltake used to offer products for modding and style of the computer, now they took the step and offer innovations and high end products, too.

There were two impressive presentations we noticed in the passed weeks. On the one hand there is the Thermaltake Fanless 103 CPU cooler and on the other hand the TWV 480(total watt viewer). Now there are even more, the Thermaltake Pure Power 350 and a water cooling system we are testing right now as well. Of course we are even more interested in the Pure Power Fanless power supply. Therefore we are testing it right now for you, right here!

Test-configuration for the “Thermaltake Purepower”

Practical experience

The practical experience with our high end computer showed that in the worst case only 170 Watt are needed. This confirms our opinion that a high quality 250 Watt power supply has more than enough power for a modern high end pc. A high quality 250 or 350 Watt power supply is better than a cheap unstable 550 or 600 Watt power supply.

Voltage stability

To test the stability of the supplied voltage we used the 3D Mark tests. This tests produce highly changing dynamic loads and high currents.

The TT Purepower has very good results concerning the power stability and is just slightly behind the Silentmaxx Pro Fanless but better than NC-Products Fanless, Silverstone Fanless and many other power supplys.

During a 3 hour test I was able to see minimal variations in the 3,3 Volt line for a few seconds, according to the dynamic AGP Slot load. Therefore the Purepower power supply is one of the best power supplies according to the stability.

Temperature

During all tests there was a room temperature of about 22 degrees Celsius. We measured at the heat sink and the in and outside heatpipe heat sinks.

We used a 4 hours 3D Mark 2001 test, because this test maximises stress for the powersupply.

In the table you can find the maximal temperatures reached, even if they were reached only momentarily. It is good that the warmest point of the heatpipes is outside the tower and therefore the heat dissipation inside the pc tower is minimised. Interesting is the very low temperature of the inside heatpipe heat sink which is even lower than the case temperature.

Comparison:

If you compare the Purepower power supply with all the other fanless power supplies on the market you find that the Purepower is second to none concerning the temperatures. As well it is second concerning the power stability. So we have a nearly perfect PSU to an absolutly nice price.

Specials

You can get the Purepower in 2 different versions, with active or passive PFC.

Passive PFC’s often pose problems because there can be a humming tune. Therefore we tested the passive version, but we were unable to hear any noise.

Fazit

The Termaltake Purepower is a very advanced product. In some points it is even better than powers supplies which cost twice as much. While other producers are only concerned to rise up the maximum power output, Thermaltake concentrates on the most important things like stability and performance. A very good temperature performance, very stable voltage lines and enough power output. Given that the actual price normally is lower than the recommended retail price, it is possible that the Thermaltake Purepower is not only one of the best but also one of the cheapest fanless power supplies on the market.

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