FSP Hyper K 700W Performance:

Test Rig:

CPU: Intel Core i5 8600K
Motherboard: Aorus Z370 Gaming 5
GPU Aorus GTX 1060 Gaming G1 3GB
RAM: ADATA XPG Spectrix D40 3200MHz 16GB CL16
SSD: PNY Optima 120GB for primary OS
HDD: Seagate Barracuda 1TB 7200RPM
HDD2:  Seagate Barracuda 750GB 7200RPM
PSU FSP Hyper K 700W
Chassis: Thermaltake View 31TG RGB
Cooling solution: Deepcool Castle 240 RGB AIO
Chassis Fans Deepcool MF120 x3

Reviewing a PSU properly requires special equipment which can cost a few hundred dollars. In our review, we will only be looking at the voltage stability of the PSU which can easily be done by a multi-meter. The multi-meter we used in our test was UNI-T UT202. But just for the peace of mind, we also measured the readings using the HWinfo64 software. However, the readings in the software aren’t too credible compared to our multi-meter test.

Minimum, maximum and average ratings were noted from both the meter and software. Both idle and load condition readings were noted. To put load on the system, we ran the Aida64 Extreme Stability test on all components. Readings were taken a few minutes into the stress test. These readings are for +3.3v, +5v and +12v lines. Our multi-meter has an error margin of 0.1% by 10mOhm.

Note that neither the GPU nor CPU was overclocked in our testing. At idle condition, the system didn’t take more than 30w from CPU and GPU combined which is about 5% of the total value the PSU can handle. PSUs tend to be less efficient under 10% load unless it is 80+ Titanium rated. But when we stress tested the system with Aida64 Extreme, the system was taking 135W+ from the CPU and GPU combined. And that’s about 20% load of what the PSU can handle. This is where the 230v EU white rated PSU becomes 82% efficient. Which means if my system requires 135W, then the PSU is pulling almost 165W from the wall.


So as we can see, in the idle condition, the PSU voltage readings are a bit off the mark. But don’t make an immediate uninformed assumption as everything is still within the safe range of 5% difference from their rated values. Any PSU above 5% difference from the rated voltage on either line should be an immediate no go. According to our multi-meter, our +12v line is off by only 1.4% from its mark. While the +5v line performance is within 2% and our +3.3v line within 0.3%. Everything looks good for under 5% load of the PSU’s rated wattage. The minimum to maximum reading difference is also not too big which is a good sign of voltage stability.

And when we put some load on the system, things start looking even better, especially on the +3.3v line. Our +12v line has dropped within a range of 0.82% difference. While the +3.3v line shows a stable performance within 0-0.3% range. However, the +5v line performance doesn’t seem to have changed much.