Nvidia's RTX 4090 has famously high power requirements, but you may be able to cut those down quite a lot.
Nvidia’s latest flagship, the RTX 4090, has high power requirements, which is not surprising given its 450-watt total board power . However, there are ways to make the GPU much more power efficient.
Before the RTX 4090 launched in October, it was the subject of a lot of speculation when it came to its power efficiency. Some sources warned about obscenely high TBP figures, in the range of 600W to 900W. Fortunately, that wasn’t the case, but the GPU is still quite power-hungry at 450W. However, it’s no secret that undervolting a GPU can limit power usage while maintaining similar performance. QuasarZone tried out two ways of improving the RTX 4090’s power efficiency — adjusting the power limit and undervolting. They then put the card to the test in five games, all played at max settings and at 4K resolution. The list of titles includes Cyberpunk 2077, Marvel’s Spider-Man Remastered, Forza Horizon 5, Lost Ark, and PlayerUnknown’s Battlegrounds.
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