Two weeks ago, NVIDIA introduced the GeForce GTX 580M as being the fastest notebook GPU ever. But according to AMD, their recently-launched Radeon HD 6990M is the world's fastest mobile GPU, being up to 25% faster than any other announced notebook GPU (a clear reference to the NVIDIA’s GeForce GTX 580M).

The new Radeon HD 6990M works internally at 715 MHz, accesses its 2 GB of GDDR5 memory at 3,600 MHz through a 256-bit interface, and features 1120 processors. This chip supports DirectX 11, HD3D, CrossFireX, and Eyefinity technologies.