Page 1:Features and Specifications
Page 2:Unboxing Video
Page 3:Teardown and Component Analysis
Page 4:Load Regulation, Hold-Up Time and Inrush Current
Page 5:Efficiency, Temperature and Noise
Page 6:Protection Features and DC Power Sequencing
Page 7:Cross-Load Tests and Infrared Images
Page 8:Transient Response Tests
Page 9:Ripple Measurements
Page 10:EMC Pre-Compliance Testing
Page 11:Performance, Value, Noise and Efficiency
Page 12:Final Analysis
Protection Features and DC Power Sequencing
|OCP||12V: 50.6A (134.93%), 12.039V|
5V: 26.1A (130.5%), 5.043V
3.3V: 27.7A (184.67%), 3.343V
5VSB: 3.4A (136%), 4.999V
|OTP||✓ (140°C @ Secondary side)|
|PWR_OK||Accurate (but lower than 16ms)|
Inrush: NTC thermistor & bypass relay
The OCP triggering points on every rail except for the 3.3V one are properly configured. Because of the 3.3V rail's low nominal capacity, OCP's percentage is too high. Ripple stays in control though, as does load regulation.
OPP is set at around 138.5%, which allows the PSU to deliver more than 620W of load before shutting down. We usually ask for 130% above the nominal capacity, but because this is a low-capacity and well-built power supply, we don't have a problem with its higher OPP. It'll have no problem coping with the power spikes that many high-end graphics cards generate.
Short circuit protection is present on all rails, as expected, and the power-good signal is accurate. However, it doesn't exceed 16ms as the ATX spec demands.
DC Power Sequencing
According to Intel’s most recent Power Supply Design Guide (revision 1.4) the +12V and 5V voltages must be equal to or greater than the 3.3V rail’s output during power-up and normal operation.
For our first measurement, we turn the PSU off and switch it back on without load on any of its rails. In the second test, we set the PSU to standby mode, dial in a full load, and start the PSU. In the last test, with the PSU switched off, we dial in a full load before restoring power.
Since the 3.3V rail is lower than the other two rails in every case, we can say that everything went smoothly.
MORE: Best Power Supplies
MORE: All Power Supply Content
- Features and Specifications
- Unboxing Video
- Teardown and Component Analysis
- Load Regulation, Hold-Up Time and Inrush Current
- Efficiency, Temperature and Noise
- Protection Features and DC Power Sequencing
- Cross-Load Tests and Infrared Images
- Transient Response Tests
- Ripple Measurements
- EMC Pre-Compliance Testing
- Performance, Value, Noise and Efficiency
- Final Analysis