AMD has responded to NVIDIA's claims that its GeForce GTX 580M is the fastest mobile GPU with one of its own. The new AMD Radeon HD 6990M is touted to be the new king of the hill, with AMD boasting wins over the GTX 580M in a number of the latest games.
AnandTech - Instead, the HD 6990M will be a full Barts core, with all 1120 shaders enabled. (The closest desktop equivalent is the HD 6870, which comes clocked at 900MHz, 25% higher than the 6990M.) Besides the now-standard DX11 support that AMD has been shipping since the first HD 5000 parts, 6990M also includes with HD3D (stereoscopic 3D) and OpenCL 4.1 support.
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