BFG ES-800 800W 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 BFG ES-800 starts the testing section off with a bang (no, not literally) by displaying some pretty impressive efficiency numbers across all of the tests. What impressed us the most was the fact that this power supply only drew 13W from the wall when the system was turned off but the power supply was still on. Even though we do not measure efficiency in percentages, it looks like BFG’s claim of 80% and higher efficiency is holding true.


Voltage Regulation Testing


+3.3V Regulation



+5V Regulation



+12V Regulation


Voltage regulation is another strong category for the ES-800 since it shows incredible poise through every one of our tests. You may notice that the +12V voltages shown in the Idle and CPU Load tests were quite a bit lower than those shown in the higher-load GPU and System Stress tests. This is due to the fact that the Idle and CPU tests have the +12V voltages taken from the CPU connector while the other tests have results taken from the PCI-E connector. That being said, this BFG power supply showed that it is an extremely stable unit.