https://github.com/HomeOfVapourSynth...urSynth-EEDI3/
There are two filters in this plugin, one using pure CPU and the other using OpenCL. Unfortunely one of the heavy loop can't get parallel execution on GPU (or I'm too dumb to find a way to conquer it) and still need to be executed on CPU, the OpenCL version may not necessarily run faster than pure CPU version. Anyway, here is my rough test on my E3-1230v3 and (poor) GTX 660.
AVS EEDI3 v0.9.2.1 x64
eedi3(opt=1, pure c): 1.15 fps
eedi3(opt=2, sse2): 3.81 fps
VS EEDI3 r2 x64
EEDI3(opt=1, pure c): 1.22 fps
EEDI3(opt=2, sse2): 4.19 fps
EEDI3(opt=3, sse4.1): 4.89 fps
EEDI3(opt=4, avx): 6.18 fps
EEDI3(opt=5, avx512): unavailable
EEDI3CL(opt=1, pure c): 4.88 fps
EEDI3CL(opt=2, sse2): 7.17 fps
Sample video used for benchmarking.