FSP PSU Roundup - 500W, 700W and 1kW - FSP PSU Roundup Final Thoughts

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

Conglomerate Results:

If you've been paying attention to the tests on the previous pages and clicked through some of the thumbnails to look at the gallery pictures, you'll have noticed that all of the FSP PSUs get a noisy under load.  You'll also have noticed that the voltages remain very solid and constantly stay above their nominal rated value.  The 700W unit has the highest +12v rails as they stay at 12.5v or higher even when under a heavy load.  The 1000W unit has the most consistent voltage results though at we see the voltage fluctuate a mere 0.1v on the 12v rails 0.03v on both the 3.3v and 5v rails.  This PSU puts out rock solid voltage numbers.  Unfortunately it's about as noisy as riding in a MACK truck.

Voltage
Click for full-sized image

 

Ripple and noise is something that every company brags about and at which they test and measure differently.  We use a very sensitive Tektronics TDS2002 Scope and this reports wider fluctuations than results from other sites.  We've average the results, but we still see pretty high numbers.  Please refer to our PSU Testing Methods here for more details.

During non-load tests the 1000W PSU had the most noise on its rails and right off the bat we saw the 3.3v and 5v lines out of spec.  This only got worse as we increased the load on the PSU.  The 500W and 700W units were within spec at idle, but that disappeared quickly as we added a 380W load.  The 12v rails generally stayed within spec, but the 3.3v and 5v rails were well out of their 50mV allowance.

Ripple & Noise
Click for full-sized image

 

 

Conclusion:

All of these PSUs showed some promise for their target market but when we loaded them up we found the ripple and noise on all of these units to be excessive.  They exceed specification on 3.3v and 5v consistently and even some of the 12v lines are out of spec at times.  While it's true that we measure more precisely than other sites, our results are also consistent from review to review and these have shown some of the most noise of all PSUs tested.

That being said, they all provided good system stability at tested loads and the little 500W PSU is a trooper than can put out a bunch of power from its relatively empty case.  We'll rate them all individually below.

 

500W Blue Storm II:

Pros:

  • Nice looking
  • Quiet
  • Provides ample power for most systems

Cons:

  • Voltage runs high
  • 5v and 3.3v lines out of spec at load.
  • Non-modular

BCCRating - 500W

 

700W FX-Epsilon:

Pros:

  • Nice looking
  • Quiet
  • Provides ample power for gaming systems

Cons:

  • 12v lines are at maximum of spec'd voltage
  • 5v and 3.3v lines noisy and out of spec at load.
  • Non-modular

BCCRating - 700W

 

1000W Kingcraft:

Pros:

  • Nice looking
  • Fits ATX Form Factor
  • Provides ample power for high-end 3-Way SLI systems

Cons:

  • Lines are noisy in all situations
  • 80mm fan is LOUD!
  • 5v and 3.3v lines noisy and out of spec by double under load
  • Non-modular

BCCRating - 1000W

 

I'd like to thank FSP for sending over these PSUs for us to review.  Please feel free to post your thoughts, comments and questions in the forum at the "Comments" link below.