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12V: 88.4A (124.86%), 12.073V
✓ (134°C @ secondary side)
|12V to Earth: ✓5V to Earth: ✓3.3V to Earth: ✓5VSB to Earth: ✓-12V to Earth: ✓
The OCP triggering points are correctly set on all major rails, and the same goes for OPP. Moreover, there is over temperature protection, and the rest protection features are present, as well.
DC Power Sequencing
According to Intel’s most recent Power Supply Design Guide (revision 1.4), the +12V and 5V outputs must be equal to or greater than the 3.3V rail at all times. Unfortunately, Intel doesn't mention why it is so important to always keep the 3.3V rail's voltage lower than the levels of the other two outputs.
DC Power Sequencing Scope Shots
The 3.3V rail is always lower than the other two, so everything is fine here.
Cross Load Tests
To generate the following charts, we set our loaders to auto mode through custom-made software before trying more than 25,000 possible load combinations with the +12V, 5V, and 3.3V rails. The deviations in each of the charts below are calculated by taking the nominal values of the rails (12V, 5V, and 3.3V) as point zero. The ambient temperature during testing was between 30 to 32 degrees Celsius (86 to 89.6 degrees Fahrenheit).
Load Regulation Charts
Load Regulation Graphs
The lower the power supply's ripple, the more stable the system will be and less stress will also be applied to its components.
Ripple Suppression Graphs
We apply a half-load for 10 minutes with the PSU's top cover and cooling fan removed before taking photos with a modified FLIR E4 camera able to deliver an IR resolution of 320x240 (76,800 pixels).
The temperatures are kept low, with the highest recorded on the main transformer that transfers power to the 12V board.
It makes an impression of the fan control transistor's high temperature, but with the fan cooling it down, its temperature will be notably lower.
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Current page: Protection Features, DC Power Sequencing, Cross-Load Tests and Infrared ImagesPrev Page Load Regulation, Hold-Up Time, Inrush & Leakage Current, Efficiency and Noise Next Page Transient Response Tests, Timing Tests, Ripple Measurements and EMC Pre-Compliance Testing
Aris Mpitziopoulos is a Contributing Editor at Tom's Hardware US, covering PSUs.
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Nice @Aris_Mp! I have a question though. Are the 550 W, 650 W, and the 750 W the same platform as this or are they different?Reply
Thanks! The V750 uses the same platform. Have to check for the other two.Reply
Oh, great then! Please do check because the lower wattages are already sold here in my country.Aris_Mp said:Thanks! The V750 uses the same platform. Have to check for the other two.
The fan noise is actually rattling and annoying.Reply