A watercooled Radeon HD 4890 graphics card is expected to be launched by PowerColor within two weeks. FUD Zilla claims it's a limited edition that will feature clockspeeds of around 1000MHz for the GPU and 4000MHz effective for the GDDR5 memory.
Powercolor will overclock both the GPU and the memory which should end up running at 1000MHz. Due to the water cooler option, the maximum overclock will of course depend on the water cooling setup. The Powercolor LCS HD 4890 will at least be cooler than the reference HD 4890, and of course, it will be dead silent which is a great plus as, according to the first reviews, the reference card is quite noisy.