Cooler Master Real Power Pro 750W 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



Throughout the tests, the Cooler Master Real Power Pro 750W was extremely efficient when compared to some of the higher-priced competition. This is a very good start to our testing regimen, even though efficiency did drop at higher outputs.


Voltage Regulation Testing

+5V Voltage Regulation



The readings I got from the +5V rail were very interesting considering they gradually increased as the load ramped up. Thankfully, the readings never went above the ATX specification.


+3.3V Voltage Regulation



Here we see that the voltage regulation is absolutely superb. So far, this power supply has some of the best +3.3V regulation I have seen in power supplies at or above 700W.


+12V Voltage Regulation



Good +12V rail regulation is a must on all modern power supplies and the RPP 750W does quite well in this test though it begins to show that it is straining a bit during the system stress test. Personally, I would never put this kind of stress on a 750W power supply in the first place but it goes to prove that this Cooler Master can handle extreme loads quite well.


+12V Ripple



Here is where I was expecting this power supply to stumble a bit but lo and behold, it performed very well. Ripple says far below ATX specified norms throughout every test. Well done!!