Testing

 

Motherboard

MSI X79A-GD45 (8D)

CPU

Intel core i7-3930k (3.2GHz)

RAM

GeIL EVO Corsa CL9 2133MHz (2 x 4 GB)

Graphics Card

ASUS ATI Radeon HD6970 2GB

Hard Drive 

Zalman F1 SSD 120 GB

PSU

In-Win GreenMe 550w

CPU Cooler

Thermaltake Water 2.0 Extreme

Case

Thermaltake Level 10 GT

 

The testing results are based around line rail stability, each measured at the different loads. Also using a digital multi-meter, the power output is measure to see the PSU efficiency. With this method, we get to see some realistic measurements and an idea into just how well the PSU performs.

As the GreenMe only has two PCI-E power connectors, we use our ATI Radeon HD 6970 to draw out as much power from the 550 power supply as possible. Oddly on the higher wattage models like the 650 and 750watts, they both still only have two power connectors, so pulling out 750 watts, or as close to it as possible may be extremely difficult, even on a heavy load, so I’m not sure quite why the 650 and 750 watt models have been made with our two PCI-E power connectors. With that in mind I think this 550watt model is the only In-Win GreenMe PSU product that has much relevance to the energy eco-conscious people out there.

Closer to 3.3v, 5v, 12v the better the ratings are.

As you can see above, the rails stay very stable and do not give us any nasty surprises. The main focus should be the 12 Volt rail rating, as this PSU sports a quad 12V rail system we expect some fluctuations in the main 12V rail, but it held strong with minimal movement on load with one GPU. We can’t necessarily speak for the 650 and 750 watt models, because the user may want t use two GPU’s with the more powerful PSU’s. However for this small 550watt In-Win GreenMe where only one GPU will be used stability stays strong with low wattage output.