Pros: Best cards on the market. The power of a stock 290x with the power consumption of a 280x. No problems so far. Set my monitor back to its native 1920x1200 and I am still able to run everything at ultra settings. The fan on these cards are quiet.

Cons: Games have to be in full screen mode for crossfirex to utilize 100% of both gpus. In window mode my first card is 100% whilst second is only 50%. Crossfire bridge needed. There is a void warranty sticker on a screw which is upsetting because I want to use an ek thermosphere block on these cards.

Pros: A lot of power in a small form factor. Works well with my crosshair v-z and I'm planning on purchasing one more for crossfire. I haven't had any problems yet, while gaming, with a 1080p resolution.

Cons: none

Overall Review: I would like to see more vendors use the poseidon as a ref for air or liquid cooling.