Performance

The UL number E161451 reveals that the PSU is made by OEM manufacturer Channel Well Technology for Xigmatek.

Xigmatek NRP-HC1201
AC Input	100V-240V, 15A max., 47-63 Hz
DC Voltage	+3.3V	+12V1	+12V4	+5V	+12V2	+12V3	+5VSB
Max. Output	30A	20A	36A	30A	20A	36A	3.5A
	600W			600W			17.5W
	1200W

Please note the output configuration, two 12V and the 3.3V line are together and the 5V and two 12V lines also share a power limit.


Tested on: AMD Athlon64 FX-62 @ 2800 MHz, ABIT AT8, 2x 512 MB DDR400, WD Raptor 36 GB, Radeon X1900 XTX + Radeon X1900 XTX Crossfire

The 12V and 5V line are both very stable, the 3.3V line dropped out of the ATX specification range in our testing. We asked Xigmatek if they could verify this with one of their units and they confirmed that the low 3.3V line is actually a problem of our individual sample. Xigmatek's Test Report can be found here.


The ripple voltage is ok with an amplitude of 19 mV from top to bottom.

Standard deviation 12V	5.47
Standard deviation 5V	4.77
Standard deviation 3.3V	8.21
Power Factor	0.99
Ripple Voltage 12V	18.6 mV
Power Efficiency @ 320 W	80% (320W:400W)

Standard deviation is a statistical term, which tells how far away from the average the measurements are. In other words it's the average of the average.
A large standard deviation indicates that the data points are far from the average and a small standard deviation indicates that they are close within the average.


With an efficiency rating of spot on 80.00% the Xigmatek NRP-HC1201 just makes it into the 80Plus logo range.