Antec NeoPower 650W Power Supply
Testing & Performance
We took voltage measurements with a digital multimeter with the probes inserted into an unused 4-pin Molex connector for the 12V and 5V rails. For the 3.3V rail, the probes were inserted into the appropriate pins on the 24-pin connector. The system was allowed to idle at the desktop with only system tray programs running and the results are recorded over 5 minutes in 30 second intervals and the average result recorded. For load readings, Prime95 is run to hit the CPU, HDTune for the hard drive, and 3DMark06 will stress the GPU. The same method is used for recording voltages. Temperatures were also measured at idle and load.
Test setup:
- CPU: Intel Core 2 Quad (Q6600) @ 3GHz
- Motherboard: MSI P6N SLI Platinum
- Memory: 4GB DDR2 800MHz (2×1GB Corsair XMS2 CL4, 2×1GB A-Data Extreme)
- Video Card(s): 2 x MSI NVIDIA GeForce 8800GTX
- Hard Drive(s): 150GB SATA Western Digital Raptor; 250GB SATA Maxtor
- Optical Drive(s): LG DVD+-RW-DL
- Case: Antec Nine Hundred
- Operating System: Windows Vista Ultimate Edition x86
Voltages
| 12V | 5V | 3.3V | Temp | |
|---|---|---|---|---|
| Idle | 12.01V | 5.00V | 3.30V | 32° C |
| Load | 12.01V | 5.01V | 3.31V | 35° C |
The NeoPower 650 performed very well given the hardware that was used. This power supply is also quite efficient at 80-90% efficiency under load. As shown by the results, there was very little fluctuation in the voltages and they were very tight.
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