Testing:
To test the idle and load voltages of the
Kingwin Mach 1 800W Power Supply, it was installed in a system with the following components:
» AMD Opteron 148 processor
» DFI Lanparty NF4 SLI-DR motherboard
» 1024MB G.SKILL Extreme DDR (2 x 512MB) memory
» 3x Hitachi Deskstar 80GB 7200RPM SATA-II hard drives
» 3x Western Digital 36GB 10K RPM SATA-I hard drives
» Two eVGA GeForce 7800 GT CO SLI 256MB GDDR3 PCI-E
» Pioneer DL DVDRW
» SB Audigy 2z Platinum sound card
» 2x Enermax Enlobal 120mm fans
For voltage readings I used a Fluke83 multimeter. The idle condition was established by powering the system at stock speeds and voltages with no applications running for a period of at least 30 minutes. The load condition was established by running Prime95 and 3DMark06 for a period of at least 60 minutes. In addition to these stressful applications running, the system was overclocked and overvolted to add more demand to the power supply.
There is barely any difference between idle and load in the testing of the Kingwin Mach 1 800W Power Supply. Only a 0.01V drop on both the 12V and 3.3V rails.
As a point of reference, the load voltage readings from the Kingwin Mach 1 800W Power Supply were compared with those from a
Cooler Master Real Power Pro 750W unit and a
Zippy GSM-6600P(G1) 600W unit, while powering th same test system.
The comparison between these units shows that all three provide adequate power within the typical +/-5% tolerance, and that the 800W Kingwin unit generally has the highest voltage reading on any given rail.
