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by milcron 3615 days ago
Here is a comparison of the previous generation: https://www.xcelerit.com/computing-benchmarks/libor/intel-xe...

They hold their own against GPGPU, but are probably the inferior choice if your code already runs on a GPU (OpenCL/CUDA).

The real advantage of the Phi is of course combining this nearly-as-good-as-GPGPU parallelism with the x86_64 toolchain and infrastructure. x86 supports more languages with more libraries, and is easier to develop for.