Efficiency evaluation
Let’s now move on to the efficiency evaluation, i.e. the amount of watts needed for a certain gaming performance in the form of an FPS as a metric in watts per FPS. This is the opposite of what the manufacturers like to use, but I think it is much easier to use the larger numbers before the decimal point. And because I don’t want to force you to use a calculator, the calculation is included as a bar-graph service for free. We can see that the KFA2 GeForce RTX 4080 SG 16GB (1-Click-OC) is almost as efficient in QHD as NVIDIA’s GeForce RTX 4080 FE!
And what happens now in Ultra HD? The KFA2 GeForce RTX 4080 SG 16GB (1-Click-OC) has to work much harder. This lowers the efficiency a bit, but it is still very much on par with the other two Ada cards.
Various processes can also be used to make Ultra HD more playable, but how does this affect efficiency? Even though especially the new Tensor cores have to do more work, the KFA2 GeForce RTX 4080 SG 16GB (1-Click-OC) is absolutely on par with the Founders Edition in efficiency and razor-thin behind the RTX 4090 FE. But that is not really much and can be tolerated very well in view of the performance and low operating noise.
Software and app: RGB and performance at a glance
KFA2’s XTREME TUNER software is based on the well-known API and offers the most important OC functions up to the OC scanner and the 1-click OC (which hardly brings big performance leaps, though). Manually, you can go just as far as with the MSI Afterburner, and there is also the fan control and the RGB settings, which is quite fun. You can subordinate the card to the motherboard, but you don’t have to. Own effects also have their charm like this.
In addition, there is also an app for iOS and Android, but you have to like it (and find it first). The OC story works quite well, even though the app only works in the home WLAN and requires the XTREME TUNER software to be running. Scanning the IP via QR code is certainly a nice idea, but unfortunately it does not work with the scan tool integrated in the app and the QR code from the desktop program. You will probably have to do this manually, or you can use the QR scanner or the smartphone’s photo app. The rest is then really self-explanatory.
Summary and conclusion
The KFA2 GeForce RTX 4080 SG 16GB (1-Click-OC) is, just like its bigger sister, a quite clever compromise between a certain common sense (if you can even say that for such a card) and the feasible cost savings. But it still offers a nice look (for those who like LED) and an appealing overall performance. The build quality is good, the components are chosen appropriately and at the end of the day, you will usually trim such cards to be more frugal anyway. This map even meets you halfway. And there’s even an app.
You can argue about the Alpha and Omega voltage converters, but they will do their job just as well, if not quite as efficiently. In return, the coils are a bit larger and it also whines less. The 8 phases are quite sufficient up to 320 watts. Switching frequency and LC sizing fit, so what the heck. The cooler is fully on top of the action and even acts pleasantly quiet. The graphics card holder is not overwhelmed with the almost two kilos of combat weight of the card and does a good job.
And it is the same as with the GeForce RTX 4090 SG from the same manufacturer: Optically, everything is again solidly implemented and apart from the LED lighting, it is not so conspicuous that you quickly get tired of it. So, again, it’s a balanced solution that has added a bit more exactly where it seemed necessary. The fact that some other compromises then became necessary for this is quite acceptable. There is a recommendation for those who can and want to spend the money, but might still prefer to invest in a decent power supply. In the end, you get more out of it than from an almost perfect 1500 euro card. Here it is currently 200 euros less
The graphics card was provided by KFA2 for this test. The only condition was compliance with the blocking period; there was no influence or remuneration.
- 1 - Einführung, technische Daten und Technologie
- 2 - Test System im igor'sLAB MIFCOM-PC
- 3 - Teardown: Platine und Kühler
- 4 - Gaming-Performance
- 5 - Leistungsaufnahme und Lastverteilung
- 6 - Lastspitzen, Kappung und Netzteilempfehlung
- 7 - Temperaturen, Taktraten, Lüfter und Lautstärke
- 8 - Zusammenfassung und Fazit
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