You'd think that with two graphics cards running at 4K 120FPS+ in the gaming tests we're running the cards through would be chewing down some serious power, but Turing is a very power efficient GPU architecture and the new GeForce RTX 2080 Ti packs a huge performance punch without needing that much power.
It definitely chews through more power than the GeForce GTX 1080 Ti and TITAN Xp graphics cards, but not that much more when in multi-GPU mode. The two GeForce RTX 2080 Ti cards in NVLink had whole system power consumption of between 700-770W during our testing with it sitting around 730-740W most of the time.
Comparing this to the GTX 1080 Ti in SLI which uses somewhere around 550-600W, or the TITAN Xp SLI with 600-660W, they're all still low compared to AMD.
Two of AMD's Radeon RX Vega 64 graphcis cards in CrossFire consume between 730-830W of power, and they get a hell of a lot hotter as well as much louder. They aren't ideal in multi-GPU at all, whereas the RTX 2080 Ti is not only fast, but it is power efficient. RTX 2080 Ti blows away Vega 64 with less power used, and RTX 2080 Ti NVLink continues that trend of Vega 64 CF.
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