The AMD Radeon HD 6650M is a middle class DirectX 11 graphics card for laptops. Its based on the Whistler-PRO chip and is produced in 40nm. Like the slower one, the AMD Radeon 6630M, the HD 6650 features a 128 Bit memory bus for dedicated DDR3 and GDDR3 memory chips, but with faster shader speed, cores clock, and memory speed. It also features the new UVD 3 video decoder and Eyefinity+. From the specifications, we can tell that the HD 6650M is a DDR3 version of HD 6750M.

Similar to the Radeon 5000 series, the HD 6650M still based on the same architecture, which 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 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 performance are the AMD HD 5730M and GT 540M from NVIDIA. Also HD 6650M’s average benchmarks never above the AMD HD 6750 due to DDR5 video memory. Most of current games should be playable at the low to medium details setting.

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). Like the Nvidias 3D Vision the AMD HD3D supports Blu-Ray 3D and 3D displays (integrated and external). And also AMD’s Eyefinity technology for handling up to 5 monitors simultaneously (only when the notebook has enough output socket).

Similiar to the old 5650M, the power consumption of AMD Radeon HD 6650M is about 20 Watt depending on the used memory. Therefore, the GPU will mostly be used in 15″ laptops and above.