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Asus ROG Poseidon GTX 780 Review

The Poseidon’s integrated water block features copper vapor chambers and sits below a massive aluminum heatsink.

Air or liquid cooled—the choice is yours

Nobody would call the GeForce GTX 780 a particularly hot-running or noisy GPU, but that hasn’t stopped Asus from giving it the Poseidon treatment via a “hybrid” air-and-liquid cooling setup. It’s not a self-contained cooling system, but rather an integrated water block complete with copper vapor chambers that sits below an already-beefy DirectCU air cooler. This lets the card run just fine under its own air cooling, and lets you inject it into your liquid-cooling loop, as well. It’s able to do that care of two G1/4-inch tubes attached to the integrated water block that let you attach barbs in pretty much any size ranging from 1/2-inch ID to 1/4-inch ID, so you can easily add it to your existing setup.