Cooler Master V550 Fully Modulated 80+ Gold PSU

Test Rig & Results

Test Rig “Hexilla”
Case Type
CPU
Motherboard
Ram
CPU Cooler
Hard Drives
Optical	Liteon DVD Burner
GPU	Gigabyte Xtreme Gaming GTX 950
Case Fans	1 x 180mm Mosfet / CPU / Ram cooling fan 1 x 120mm PCI-E Cooling Fan
Docking Stations	None
Testing PSU	CoolerMaster V550 80+
Legacy	None
Mouse
Keyboard
Any Attempt Copy This System Configuration May Lead to Bankruptcy

Testing Results

Now we get down to what really matters. How efficient is the V550 and how well is it at delivering that power to your devices? We used a Kill A Watt to get the voltage drawn from the wall and a Fluke 276 clamp meter with 18 inch flex current probe, we used a simple infrared thermometer to get thermal exhaust and a Decibel Meter App for noise.

Voltage / Efficiency Testing Data Cooler Master V550
Test	12 V	5 V	3.3 V	5VSB	Power (DC/AC)	Efficiency	Fan Speed	Fan Noise	Temp Out
10% Load					56.00W	88.55%	RPM	30 dBA
	11.95V	5V	3.35V	5V	63.24W				39°C
20% Load					111.56W	90.92%	RPM	30 dBA
	11.95V	5V	3.34V	5V	122.70W				39°C
50% Load					277.46W	90.73%	RPM	33.3 dBA
	12.07V	4.97V	3.32V	4.97V	305.80W				45°C
80% Load					442.30W	89.01%	RPM	36.2
	12.05V	4.92V	3.32V	5V	497.01W				48°C
100% Load					548.10W	87.32%	RPM	46.3 dBA
	12.01V	4.92V	3.28V	5V	627.70W				49°C

*The Power AC /DC column in each section the PSU output voltage is on top.

And there we have it. The Cooler Master V550 is a proper product that does exactly as it is advertised to do. Operating at an average efficiency of 89% from 10% to 100% load these are consistent numbers we love to see. 10% isn’t even counted on the Gold / Silver / Bronze rating scale, they start counting at 30% but if you run a low power system you need to know the lower voltage ratings.

 

Not only did the CoolerMaster V550 hit it’s target efficiency rating, it went above and beyond across all load ranges. Even under 100% load maxed out to core the V550 still delivered a 87% efficeincy rating. Given that your rig shouldn’t be pulling more than 75% of the rated load optimally, these results show you can expect to get proper performance from your investment even when pushing it to the absolute max.