NZXT Precise 1000W Power Supplyrobgs -
- Intel E6600 Core 2 Duo Processor
- Asus P5N32-E SLI motherboard
- 2GB OCZ PC2-6400 EL Platinum ram
- eVGA 8800GTX video card
- 3 Seagate 320GB SATA II drives
- LG GSA-H22L-BLK 18x DVD ROM
- Windows XP Professional SP2
For testing I will check the voltage on all 12.0VDC rails as well as the 5.0 and 3.3 VDC output points. As you can see, the voltage for all of the points is consistently within a very tight tolerance of +/-3%. It’s always good to see a slightly higher voltage than a lower one, as when a substantial load is put on the system, the voltage can sag. However, with voltage regulation as tight as it is, coupled with the rated 1000W power, I don’t think sag will be a concern.
At zero load I compared the output voltages of the Precise 1000W to the output voltages of the OCZ GamerXstream 600W PSU. The results are listed below.
As you can see, there is not much difference in the voltages as voltage regulation in today’s electronics has reached such high levels of accuracy. The real difference is in the actual capacity. Next we'll test both while at full load.