ABS / Tagan BZ900 900W Power Supply Review

Performance Tests

Processor: Intel Core 2 Quad Q6600 @ 3.5Ghz (B3)
Memory: 4GB Corsair Dominator DDR3 @ 1600Mhz (Thanks to Corsair)
Motherboard: Asus Blitz Extreme
Graphics Cards: 2X Gigabyte HD2900XT 512MB
Disk Drive: Pioneer DVD Writer
Hard Drive: Seagate Barracuda 320GB SATAII
Fans: 5X Yate Loon 120mm @ 1200RPM
Monitor: LG Flatron L2000CN-BF (1600X1200)

For our complete power supply testing methodology, please go here: Hardware Canucks Power Supply Testing Methodology


Efficiency Testing


The Tagan BZ900 showed us quite good efficiency numbers across all of the tests and while it was not quite as efficient as the previously-tested Hiper 880W, it came quite close to it on a number of occasions. However, the power consumption when the computer was turned off (but the power switch on the PSU was switched to “on”) was one of the higher results we have seen in a while.


Voltage Regulation Testing


+3.3V Regulation



+5V Regulation



+12V Regulation


Voltage regulation is another category where the BZ 900 really shines with very good results all the way into our most stressful tests. It should also be noted that all of these tests were conducted with the rails in the “normal” mode even though there didn’t seem to be any change when switching to “Turbo” mode. That being said, a difference of 0.09V on the +12V rail(s) between idle and full load conditions is a result Tagan can be proud of.