February 15th, 2011

Tuniq Potency 650w

Testing

Test Rig

Processor

Intel C2D E5550 Dual Core 2.33GHz

Motherboard

Gigabyte S-Series GA-73PVM-S2H

Graphics Card

XFX 8600GT

Memory

Corsair XMS2 PC6400 (2x 1GB)

Hard Drive

Hitachi HDT7250 (250GB)

OS

Windows XP Pro 32bit

Methodology

Testing power supplies is a fairly simple process compared to other products. The unit is hooked up to the most powerful hardware we have available at the time, and left in an idle state for 30 minutes. After that time, we use a multi-meter plugged into the ATX power connector. Then, the PC(s) that the unit is powering are loaded as far as they can go to guarantee maximum power draw, and the results are taken again.

The software used to load the PC was CPU Burn-In on 2 of the CPU’s cores, and the 3Dmark benchmark running at full tilt to load the GPU and the other 2 CPU cores.

Results

Performance

 

3.3V

5V

12V

Idle

3.37

5.04

12.27

Load

3.38

5.06

12.23

These results show that the rails are in fact pretty tight. That said, the 12V rail is a little further out – at least 0.2 out at idle and load. However, for the 3.3V and 5V, there really isn’t much difference in the readings from idle and load which shows that the Potency is a pretty stable unit.

Noise

The Potency really is very quiet and the single 120mm fan doesn’t produce much noise output at all – very impressive indeed.

Cost

The Tuniq Potency would set you back around $90 which in today’s market costs you about £60. Running along the lines of most units, costing around £10 per 100 watts, this seems about fair.

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Power supply units