The AMD Radeon HD 6770M is a fast DirectX 11 graphics card for middle class laptops. Its based on the Whistler-XT chip and is produced in 40nm. Like its predecessor, the AMD Radeon 5770M, the HD 6770 features a 128 Bit memory bus for dedicated DDR5 and GDDR5 memory chips, but with higher clock rates, 80 more shaders, and Eyefinity+. It also features the UVD 3 video decoder. Similar to the Radeon 5000 series, the HD 6770M still based on the same architecture, and consists of 480 stream processor. Though you can’t compare it with the 1D cores of current NVDIA GPUs in the terms of shader’s number. The comparable version of Radeon GPU should be like newer 6800 series or above. The Stream processors can be used with DirectX 11 and OpenGL 4.1. General computations like transcoding videos also available by using DirectCompute 11 and OpenCL.
Comparable Graphics cards in terms of 3D performance are the older AMD HD 5850M, and NVIDIA GTX 555M. Therefore the HD 6770M’s average benchmarks never above AMD HD 4870M. However, most of current games should be playable at the highest setting and resolution in 1366 x768 display. Except some high-demand game, like Crysis 2 and Dirt 3. Decoding of MPEG-4 AVC/H.264, VC-1, MPEG-2, Flash and now also Multi-View Codec (MVC) and MPEG-4 part 2 (DivX, xVid) HD videos on the graphics card also supported by this graphic card, thanks to the new UVD 3 video decoder.
HD audio controller intregated allows us to transmit HD Audio (TrueHD or DTS Master Audio) over HDMI and DisplayPort (e.g. für Blu-Ray videos). Also Like the Nvidias 3D Vision the AMD HD3D Technology offers to support for Blu-Ray 3D and 3D displays (integrated and external). And Eyefinity+ for drive up to 5 monitors simultaneously (only when the notebook has enough output ports).Same as the old 5770M, the power consumption of HD 6770M is right around 25 Watt depending on the used memory. Therefore, the GPU will mostly be used in 15″ laptops and above.