Final Words & Conclusion

Final Words & Conclusion

The Corsair CX750F RGB is a nice evolution of the CX series. The internals look quite decent. The unit comes with a 5-year warranty. It’s an 80 Plus Bronze certified PSU, and that’s a typical choice for, let’s say, mid-tier systems from the consumer’s point of view (in terms of efficiency/price of the unit). The 750 W variant should be enough for most users with a single graphics card in their system. You need to remember that there are also 550 and 650 W variants in this range, allowing consumers to find the perfect fit for their system. In reality, even a setup like the one used in this test (i9 9900K + Geforce RTX 2080 Ti) rarely exceeds 400 W of power draw. On the quality side, all is nice, and the efficiency (actually surpassing the 80Plus Bronze level and coming closer to the Silver range) and stability tests also went well. Load regulation is good, and there was no noticeable droop on the +5V and +12V rails. Ripple suppression is within tolerance. The 120 mm fan does its job well. It becomes audible close to 75% load, so there’s still some room for improvement there (maybe in another revision?). It would have been better if they used an FDB and maybe a 140 mm fan (but that would make the unit bigger, so perhaps not). In the package, you get a fair set of accessories, including mounting screws, zip ties, a power cord, and a manual.

[APPROVED]

A word about efficiency

Same as with any other power supply, 50% of the maximum load is where the device is at its most efficient. At this sweet spot, the Corsair CX750F RGB achieved a bit over 89% (at 230 Volts). In the case of this particular unit, half of the maximum wattage is 375 W. The average gaming PC with a single graphics card (at least the ones usually spotted in Steam hardware polls) won’t exceed this value under normal conditions. Don’t overestimate the savings (on your electricity bill) that you can make by going from 80 Plus Bronze to even Titanium. You can assume that the build quality of a more expensive PSUs will be higher, but the differences in efficiency are not that significant. So, summing it up, an 80 Plus Bronze PSU like the Corsair CX750F RGB reviewed here is a decent (but not perfect) solution. It’s good that in reality, it’s closer to the 80Plus Silver range in terms of efficiency. The price is about 90~99 USD for the 750 W variant, which is reasonable.

Stability

There isn’t much to say about stability. The voltages hold, and this doesn’t change under higher loads. The 750 W version should be enough even for dual-GPU setups with cards like an Nvidia Geforce GTX/RTX 1080/2080 or a single GPU like an RTX 2080 Ti.

Aesthetics

This Corsair PSU looks nice with its all-black cabling. The CX750F RGB’s approach with modular cables lets you plug in only the leads that you need, and this will undoubtedly improve the looks of your build. Additionally, this makes the installation process is quite simple.

Final words

The CX750F RGB retails at 99 USD, which is a fair price. The unit is all black, but there is also a white variant. Nowadays, it will probably be hidden inside the chassis shroud anyway, so this is not an essential factor. The same applies to the RGB fan used here, or the selling point. In the chassis that I used for the tests  (Phanteks Evolv X and 719), there is no way to see the RGB lighting when you’re using the PC. The CX750F RGB offers good acoustics (could have been a bit better at 80%+ load), and decent build quality. The efficiency is even better than it should be according to the standards (80 Plus Silver performance from a PSU rated as 80 Plus Bronze). You also get a 5-year warranty, which is good in this price segment. What could we suggest? Maybe going with a fan with a Fluid Dynamic Bearing? Another thing to consider for the future – a semi-passive mode (but then again) might create a conflict with the AX/RM series). Even something like 20% of the max wattage threshold would be an excellent addition. Overall, we think that this PSU deserves the “Approved” award. Although there’s an RGB fan (which makes this product an excellent choice for Corsair cases that would expose it nicely), there is nothing else that makes this PSU stand out from the crowd. The overall package is good, and that’s it. This is a product that ticks all the most essential boxes but still falls a bit short of the recommended or top pick awards.

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