The Dark Rock Pro 3 measures 122mm x 132mm x 163mm and weighs a whopping 1179g! Retail availability is expected on January 14 for 79EUR, which will likely be around $100 in the US.
With 4.8" x 5.2" x 6.4" dimensions, the Dark Rock Pro 3 is fairly massive. At 2.6 lbs, it's also a heavyweight. All that metal provides enough surface area to dissipate up to 250W, though. This beast should be capable of cooling even AMD's 220W FX-9590, which is basically an overclocked Vishera chip with a 5GHz peak Turbo frequency.
Source: The Tech Report