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Product Application:

ATX Power Supply
Product Provided by: Enermax

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Review date:

Aug 27th, 2010

Crucial System Scanner

Installing the Enermax Revolution85+ is as straight forward as any power supply should be.  There is one issue that I ran into, but its exactly the same issue I've had with every power supply I've tried in just about every full-tower enclosure that mounts the power supply on the bottom.  If you plan on routing your cables behind the motherboard tray with the cable management cut-outs then you're going to need extension cables for the ESP+12V lines. Sure it's a bit of a hassle and adds a slight cost to the build, but its really worth it keep those cables from out of sight and stretching across the video cards.

Hardware Model
Enclosure: Cooler Master Cosmos S 1100
Power Supply: Enermax Revolution85+
Motherboard: eVGA E760 Classified
CPU: Intel Core i7 960
CPU Heatsink: Custom Water-Cooling
Memory: 6GB Corsair XMS DDR3-1600
Video Card: eVGA GeForce 280GTX
Hard Drives: 1x Western Digital "BLACK" 750
1x Hitachi 500GB

Oscilloscopes are about the only practical device to analyze a voltage signal to determine its accuracy to specification and its cleanliness. An Oscilloscope would also represent a purely laboratory based test. While good on paper, it doesn't represent the quantifiable results of operational testing. So, I'm going to use the OCCT and its Power Supply Testing module to graph the Enermax Revolution85+. 

As I mentioned earlier, the Revolution series power supplies were found to have an incompatibility issue with the EVGA X58 Classified E760 motherboard. This thread is just one of many that touched on the subject. The issues have been resolved and the test system matrix shows, I plan to conduct my test with the E760 Classified.

LOAD: +3.3V

The margin for fault tolerance on a ATX v2.2 +3 volt rail is between 3.135 volts through 3.465 volts. With varying CPU load between 65 - 100%, the rail settles at 3.325 volts and hovers there with only minor rises as the CPU utilization recovers from 100%.


Tolerance on the 5 volt rail ranges from  4.75 volts - 5.25 volts. The 5 volt rail is the hardest hit as it directly feeds the voltage rectifiers on the motherboard responsible for feeding the CPU. Aside from that, OCCT reports a high of 5.09 and a low of 5.0v flat. This falls well within the fault tolerance of the ATX specification and never drops below the 5v target.

LOAD: +12V

Tolerance on our 12 volt rails range from 11.4 volts - 12.6 volts. Again we see some natural fluctuation while the CPU ramps up and down in utilization. Highest degree of fluctuation during the high/low utilization rates is roughly .1 volts and stays well within prescribed ATX 2.2 standards.

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