According to Donanimhaber, AMD will launch its dual-GPU Antilles card on March 8, some six days before Nvidia’s GTX 590.

The HD 6990 will replace the venerable HD 5970, which is still the fastest graphics card on the market, although it was introduced in November 2009. It will pack two Cayman XT cores clocked at 830MHz and 4GB of GDDR5 memory. Overclocked versions are also in the works.

There’s still no word on the price, but it will obviously be the priciest, hottest and fastest graphics card on the market, at least until Nvidia introduces the GTX 590, which is based on the bigger, pricier and faster GF110 core.

More here.