The new GX-F line from Cougar looks interesting, but could, with a few fixes, be much better. For starters, I would like to see two EPS connectors in the GX-F750, along with a semi-passive mode. I am not huge fan of a semi-passive operation, but the truth of the matter is that it does help with keeping noise output low. For me, it is essential to have the option to deactivate this mode, however, for when you want to install the PSU with its fan facing downward. The overall efficiency of the GX-F750 is on par with the competition, but I noticed that it was slightly less efficient at light loads, and it would be nice if HEC were to fix this in a future version of this platform without it affecting the efficiency levels under normal loads. Speaking of possible future improvements, I believe that Teapo's SC caps have no place in a PSU that goes for around $100 and has to compete with units like the RM750x, Seasonic Focus Plus Gold 750 W, and EVGA SuperNova 750 G3, all of which exclusively use Japanese caps, at least on their main PCBs. Moreover, the 5VSB circuit needs some further tuning in order to be more efficient and have a lower voltage overshoot during turn-on with a full load. Lastly, the fan profile could be less aggressive under tough conditions, and the EMI filtering stage needs to be refined in order to further suppress conducted EMI.

The seven-year warranty shows that HEC has a lot of confidence in this platform. It is a fact that EVGA, Corsair, and Seasonic provide even longer warranty periods, but everything above five years is overkill for a power supply in my opinion, especially since its reliability heavily depends on the power quality the mains grid provides. If the GX-F750 hits the US with a $100 price tag, it will face fierce competition from the closely priced Seasonic Focus Plus Gold model with a capacity of 750 W, which also has a higher overall performance score. In my opinion, Cougar should keep the price of this product at around $85 for an advantage that will boost sales.

The GX-F750 plays in a very tough field, but does meet the similarly priced Seasonic offering eye-to-eye when it comes to overall efficiency and noise output since it obtained the same Cybenetics efficiency and noise ratings, ETA-A and LAMBDA-S++. It also has the same overall efficiency as Corsair's RM750x (v2), but cannot keep up in terms of noise output there since the latter is the quietest 750 W PSU currently available with close to 15 dB(A) overall noise output and a LAMBDA-A+ rating. I believe that it all comes down to the price tag of this product. Should Cougar manage to keep it priced notably lower than the RM750x and SSR-750FX, pricing would surely convince more users to prefer it over the other two.