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How can you tell how many cores are available in any given GPU?
I would prefer a Windows/UI based answer, but API (DirectX?) is also nice to know.
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The program can be opened by pressing Windows+R, typing “dxdiag” into the Run dialog, and clicking OK. Choose the “Device” tab under the “Display” tab and then tap the “Name” field.
A CPU consists of four to eight CPU cores, while the GPU consists of hundreds of smaller cores. Together, they operate to crunch through the data in the application. This massively parallel architecture is what gives the GPU its high compute performance.
Architecturally, the CPU is composed of just a few cores with lots of cache memory that can handle a few software threads at a time. In contrast, a GPU is composed of hundreds of cores that can handle thousands of threads simultaneously.
No such API. Even term "core", applied to graphics hardware cannot be defined in a universal way: different vendors have very different architectures (even on desktop platforms). So, we can have 384 "CUDA cores" in nVidia GPU, 1024 "shader ALUs" in AMD GPU and 20 "blocks" in Intel GPU of the same price/performance/transistor count category. Sometimes you don't even have a dedicated GPU. So, it does not make sense to compare those numbers.
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