Ultra X3 600W & 1,000W PSUs

Test Conditions

Due to the limitation of equipment to 300W per channel, the single 12V rail was split into two on the testing apparatus and an average result was taken. Results were confirmed with a multi-meter to check there was no voltage drop between plug socket and recording equipment. We normally separately 3.3V/5V weight then 12V weight the rails, however we were able to reach the maximum power of the units with all the rails loaded appropriately without resorting to this kind of split.

600W Results

During testing the 600W and 1000W Ultra X3s were exceptionally quiet, only getting slightly louder as it hit full load, but if it wasn't for the fan spinning and warm air spewing out the back, we'd have a hard time telling it was running. The base got a little warm to touch, but the sides remained appreciably colder throughout. The cables were also quite warm which indicates some level of resistance, although not hot and no different then other PSUs we've tested.

All in all the results below are fantastic, only slightly dropping to within one percent of the ATX specification at full load, but even then keeping an extremely high PFC and 80 plus efficiency. Under more "normal" conditions between 50 and 75 percent, the PFC peaks at over 99 percent with almost 84 percent efficiency to boot.