FSP PSU Roundup - 500W, 700W and 1kW - Testing the 700W FX-Epsilon PSU

Article Index
FSP PSU Roundup - 500W, 700W and 1kW
Testing the 500W Blue Storm II
FSP 700W FX-Epsilon PSU
Testing the 700W FX-Epsilon PSU
FSP 1000W Kingcraft PSU
Testing the 1000W Kingcraft PSU
FSP PSU Roundup Final Thoughts

 

Test Setup:

While we don't have a perfect test setup for testing power supplies, we do not rely on software programs to tell us how the PSU is doing.  We have an oscilloscope that we use for testing and we measure power draw through a P3 Kill-A-Watt.  Our power is filtered through an APC UPS and we put these units to the test in a real-world scenario with a high-end test machine.

  • Intel Q6600 CPU @ 3.2GHz
  • nVidia 780i Motherboard
  • Crucial Ballistix Tracer 2GB Kit
  • 2x 8800GTX in Tri-SLI
  • 2 x 500GB Seagate HDDs
  • Freezone Elite

 

Testing:

In this PSU roundup we're going briefly through the numbers individually and will lay out how these performed at the end of the review.  You can click any of the image below and then click the next button to go through the gallery and view all of the pictures as we'll only be including a few of them for reference as we go along.

No-Load (8W) Tests: 

 3.3v 8W
3.3v 8W
5v 8W
5v 8W
12v1 8W
12v1 8W
     
 12v2 8W
12v2 8W
 12v3 8W
12v3 8W
 12v4 8W
12v4 8W

 

While this PSU has very little noise in the non-load situation, there is some noticeable ripple as you can see above.

 


380W Load Tests:

 3.3v 380W
3.3v 380W
5v 380W
5v 380W
 12v1 380W
12v1 380W
     
 12v2 380W
12v2 380W
 12v3 380W
12v3 380W
 12v4 380W
12v4 380W

 

Under a moderate load we see the +12v1 rail pretty noisy and both the 3.3v and 5v rails exceed the 50mV specification.  Please keep in mind that we are averaging 16 samples of data, and if we back this off to 4 samples, the noise averages much greater.  It's because of our precise test equipment that we see higher numbers that other sites.

 

580W Load Tests:

 3.3v 580W
3.3v 580W
 12v1 580W
12v1 580W
12v2 580W
12v2 580W
     
 12v3 580W
12v3 580W
 12v4 580W
12v4 580W
 -12v 580W
-12v 580W

 

With the PSU running an 8800GTX SLI system with an attached Freezone Elite the system managed to run stable although you can see that the voltage line were a little noisy and some had a very pronounced ripple at full load.  Once we drew more than 600W through this PSU, it would shut down but that is likely due to one rail being loaded more than it should.  There are only two PCIe connectors and we had to use a couple of adapters to power the other GTX card.  We'll cover these numbers in more detail after we talk about the 1000W FSP PSU on the next page.