Sentey GSP1000-SM 1000W Modular PSU - Testing the Sentey 1kW

Article Index
Sentey GSP1000-SM 1000W Modular PSU
Closer Looks, Features and Specs
Cables and Test Setup
Inside the 1000W Sentey
Testing the Sentey 1kW

Testing - 5W, 380W & 952W: 

We initially plugged the PSU into an EZ PSU Tester 3 in order to power it on for our "idle" measurements.  As noticed below, the voltage rails were fairly stable with no load, but these aren't necessarily indicative of overall load performance.  According to our Kill-a-Watt, the power draw was 5W.  We thought these results would be interesting to include and compare with other power supplies to see how they manage a non-load situation, and how much power the PSU itself will draw.



As I expected with I was given the opportunity to look at this high-end 80PLUS Gold PSU, no matter what type of load I put on it, the voltage rails stayed clean, and had very little noise.  As you can see by clicking the images above, with a moderate load we captured a small 10.5mv ripple & noise measurement on the 3.3v rail, 22mv on the 5v rail and 52mv on the 12v line.  This is nice and clean power as ATX specifications state 50mv is allowable on the 3.3v and 5.0v rails while 120mv is acceptable on the 12v rails.  Even with a heavy load the Sentey GSP1000-SM stayed well within specifications on the rails.  The 5v line maxed out at 30mv while the 3.3v line remained very good at 22mv.  The +/- 12v lines maintained just over half of their allowable ripple and noise.  This is a very solid result - even with a 952W load

Instead of taking a ton of pictures of each voltage line under different load, we've graphed the results below.



The voltage is very solid with the Sentey GSP1000-SM unit, and while it tends to be a bit on the high side, the biggest drop in voltage when a load is applied to any of the rails is 0.3v.  On the 3.3v line we see a drop of a mere 0.03v - almost perfect, and on the 5v rail we see a drop of 0.1v - a very solid result.  The +12v rail drops 0.3v, but it still remains slightly above 12v at 12.3 and is very stable.  The -12v rail drops 0.3v as well, but the 12v rails are allowed to fluctuate an incredible 1.2v and still stay within ATX specifications.  Thankfully, they are much more solid than that.



The Sentey 1000W GSP1000-SP Power Supply is in the top dog over at Sentey and it is their flagship product - both in terms of power output and efficiency.  Sentey's 80PLUS Gold line ranges from 750W to this 1000W unit, and is geared toward consumers with high-end PCs with two to three video cards.  Our test system included a pair of Radeon 4870, an Intel Core i7 2500K CPU, several hard drives and more and it handled it easily.  In order to make the power supply sweat, we plugged it into a heavy 12v load and watched the power draw climb.  It pushes out a lot of watts through the single +12v line and proves to be solid, stable and it runs quite cool.  The hottest internal component reached 48°C when testing in our office with an ambient of 25°C.  It handled everything we threw at it without stumbling, stuttering or any undue concern.

There really isn't much of a downside to this PSU.  It is nice and quiet.  It earns its "Gold" rating by being at least 90% efficient and is a great power supply that certainly deserves some consideration.



  • Low electrical noise
  • Math specs it out over 1200W - so should handle load
  • Lots of peripheral and SATA connectors
  • Very stable under heavy load 
  • 14cm fan is very quiet and cools well
  • Standard size should work in almost every system.
  • Unique modular cables plug into any PSU port


  • Not widely available (and they should be!)




Sentey has a rock-solid, well designed PSU on their hands with the GSP1000-SM series PSU and it easily earns a "Gold" award here at BCCHardware for performance, quality and low noise. 

If you have any questions or comments, please post them in the forum at the "Comments" link below.