How many GPUs are out there? [closed]

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I could not find numbers on how many modern GPUs are sold up to date by both Nvidia and AMD? By modern, I mean general purpose programmable by CUDA, OpenCL or some other technology. Do anybody knows?

Thanks.

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There are some numbers: http://www.tomshardware.com/news/GPU-videocard-Nvidia-AMD,6533.html "total GPU shipments in Q3 2008 of more than 111 million units.", half of them are cuda- and opecl- disabled intel

So, total number of CUDA/OpenCL enabled GPUs is around 50 mln * 4 (4 Q in a year) * 4 (up to 4 years of modern GPU produced) ~= 0.8 - 1.2 billions. This is only an estimate, and real numbers can vary from 0.05 to 2 billion.

some other technology can mean GP programming with shaders, so number is so high. CUDA is here for 5 years, OpenCL is very young, Stream is not so popular (?). Not all modern cards allow using of CUDA or OpenCL...