How it is possible to have "80 Stream Processing Units" for ATI Mobility Radeon HD 5400 Series GPUs (e.g. http://www.amd.com/us/products/notebook/graphics/ati-mobility-hd-5400/Pages/hd-5450-specs.aspx) and CLInfo program to give 2 compute inits (Max compute units) ?
Assuming 5 processing elements per 16 stream cores the CLInfo must give only 1 compute unit... Except if there are 8 stream cores per compute unit… What really applies ?
Also what is the wavefront granularity for same series GPUs ? 32 or 64 threads per 4 cycles?
I cannot find any of the above information inside specifications