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Recent Posts

Recent Posts

Final Thoughts

03/30/2015 - 11:35

It’s not often that a product like the Miller XMT 300 PC power supply crosses our test bench.  When the opportunity arose, I jumped at the chance but in hind sight experiences like this can be humbling.   Luckily the fire was quickly...


03/30/2015 - 11:31

Physical Size and Weight A basic measure of any power supply is the unit’s overall physical size and weight.  This may seem rather simplistic but it generally holds that more industrial grade components and larger heatsinks equal a better PSU...

XMT 300 PC – A Look Under the Hood

03/30/2015 - 11:27

Here are a few pictures showing the large printed circuit boards and components inside the Miller XMT 300 PC power supply.  You knew these were coming, right! [inline:files/review/2015-03-30/13-Inside.jpg] [inline:files/review/2015-03-30/14-Inside....

XMT 300 PC Power Distribution Module

03/30/2015 - 11:24

[inline:files/review/2015-03-30/8-Interconnect-Diag2.jpg] As we stated earlier, the Miller XMT 300 PC power supply only produces a single, gigantic +12V output.  This +12V power is then fed to multiple distribution modules wired in parallel that...

XMT 300 PC Main Power Unit

03/30/2015 - 11:20

The XMT 300 PC power supply features a bright blue enclosure that highlights Miller’s The Power of Blue slogan.  Did I mention this thing is huge!  The unit is designed to sit on the floor and that is where most people will leave it. [...

EVGA SuperNOVA 550GS and 650GS Gold PSU Review

03/24/2015 - 13:09

Introduction EVGA has just announced the arrival of two new GS power supplies in their popular SuperNOVA line, the 550GS and 650GS. Both power supplies are 80 Plus Gold certified and feature all modular cables, high-quality Japanese brand capacitors, and...

Final Thoughts and Conclusions

03/21/2015 - 10:43


Efficiency, Differential Temperature and Noise

03/21/2015 - 10:39


DC Load Regulation and AC Ripple

03/21/2015 - 10:32

DC Output Load Regulation To simulate demanding and maximum loading conditions, the EVGA SuperNOVA 550 GS and 650 GS power supplies were connected to the load testers and supplied with a constant 115 VAC.  In this test we are interested in seeing...

Under the Hood

03/21/2015 - 10:28

[inline:files/review/2015-03-21/15-Inside.jpg] Here are a few pictures showing the layout and components inside the EVGA SuperNOVA 550GS and 650GS Gold power supplies.  Internally the two units are nearly identical (except for a couple larger/...