The energy consumption of the KFA2 GeForce RTX 4090 SG will not be an exception in comparison with different GeForce RTX-4090 fashions. At 450 watts, the normal energy restrict is simply as excessive as that of different RTX-4090 fashions. However, there are some deviations amongst the varied fashions in the non-obligatory energy goal. With a further 13%, you possibly can improve the energy restrict of the KFA2 GeForce RTX 4090 SG to about 510 watts. Nvidia’s Founders Edition even permits for as much as 600 watts, and the Palit GeForce RTX 4090 GameRock OC solely 500 watts. But in follow this does not play a serious function, since solely in the rarest instances the energy restrict of 450 watts is even reached. The consumption in the FurMark stress take a look at is barely increased than 370 watts. At that point, the GPU temperature stays a cool 65 °C (145 °F), and the fan velocity is only one,300 revs per minute. At 39 dB(A), the graphics card is quietly audible.
The KFA2 GeForce RTX 4090 SG makes use of an enormous warmth sink with three giant 102-mm (~4 in) axial followers. Optionally, you may also set up a further 102-mm fan on the again. However, you must be sure that about the compatibility with the mainboard that’s used. In our case, we have been unable to put in the extra fan, since the RAM banks of the Gigabyte X670E Aorus Master prevented this.
If we evaluate this with the energy consumption of the complete take a look at system, it’s about 546 watts whereas gaming. This is barely barely greater than in comparison with the Nvidia GeForce RTX 3090 Founders Edition. At the similar time, we nonetheless measure a major efficiency improve, so the GeForce RTX 4090 takes an enormous step forward when it comes to the efficiency per watt. We additionally measure some consumption peaks of as much as 700 watts for our take a look at system. KFA2 specifies an influence provide capability of a minimum of 850 watts for the GeForce RTX 4090 SG. Some different producers, on the different hand, specify a minimum of 1,000 watts, which is a bit too excessive, in our opinion.
In phrases of the 12VHPWR connection, we need to level out right here that you must make it possible for the plug sits utterly and appropriately in the connector. But there have been no issues on this regard with any of the RTX-4090 fashions that we examined to date.
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KFA2 GeForce RTX 4090 SG review: Uncompromised 4K gaming with the new Nvidia flagship
