Rasurbo GAP 750w
Testing
Test Rig
|
Processor
|
Intel C2Q Q9450 Quad Core 2.66GHz |
|
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 |
|
PSU |
NOX Apex 700W |
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, and a PF and wattage meter for their results respectively. 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, one instance for each of the individual cores and 3DMark06 in order to load the GPU.
We also test a unit’s efficiency, by taking its PF rating and the wattage necessary to power the hardware. We can then compare this to other PSUs to find out how efficient it is.
Results
Rails
The rails on the whole aren’t bad but they are certainly a little more spread that the Zalman ZM-770XT. They are pretty much equal to the Tuniq Potency which is a little disappointing; I was hoping it would be a bit more stable than this.
However, it’s still pretty stable and the results are far from poor.
PF and Wattage
|
|
PF Standby |
PF Idle |
PF Load |
Watt Standby |
Watt Idle |
Watt Load |
|
Zalman Extreme 770W |
0.12 |
0.78 |
0.83 |
5 |
74 |
129 |
|
Tuniq Potency 650W |
0.19 |
0.76 |
0.80 |
14 |
98 |
156 |
|
NOX Apex 700W |
0.17 |
0.76 |
0.82 |
9 |
105 |
143 |
|
Rasurbo GAP 750W |
0.12 |
0.74 |
0.86 |
4 |
75 |
133 |
This is where the Rasurbo unit does a lot better, with the efficiency and power outputs being very good. In terms of wattage use, the results are nice and low and only beaten marginally by the Zalman unit.
The PF ratings are not bad either and are pretty much average for standby and idle; however the load PF is a little higher than the competitors which is impressive.
Noise
Another area in which the Rasurbo GAP 750W excels is the noise outputs: at idle it is pretty much impossible to hear any whirring or sound at all that emanates from the unit. Increasing the power consumption up by loading the CPU and graphics does correlate to an increase in fan speed due to it being thermally controlled but the increase in noise isn’t really a problem and it’s still very low.
Cost
QuietPC have this unit priced at £90 (inc. VAT) which is a very reasonable price for a 750W PSU especially considering some of the competition, for example the Zalman 770w unit, which is £60 more!
ABOUT THIS AUTHOR
Reply