OCZ GameXStream 700w ATX PSU
Published: 14th September 2006 | Source: OCZ | Price: |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 GameXStream'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.
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.
At present Overclock3D doesn't have the professional equipment required to reliably measure the noise output of devices. However, as a new part of our testing procedure we will be recording the PSU at idle and load so that you can make your own judgments. All recordings are taken at 30cm distance from the unit.
Idle Recording - Download
Load Recording - Download
Before you go away with the wrong impression from these recordings I'd like to remind you that they were taken outside of a PC case. Therefore the recordings (especially the load one) do not represent the level of noise you are likely to hear once the unit is inside a PC enclosure.
I was pleasantly surprised by the low noise levels emitted by the GameXStream both at idle and under load. Most high wattage power supplies seem to have trouble maintaining low noise levels when under full load, however the GameXStream managed this effortlessly.