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What does Premiere Pro accelerate with CUDA/OpenCL?

Here’s a list of things that Premiere Pro CS5 and later can process with CUDA:

some effects (complete list at the bottom of this post)
scaling (details here)
deinterlacing
blending modes
color space conversions

Premiere Pro CS5.5 and later can process even more things, listed on this page.
Premiere Pro CS6 can use OpenCL to process the same features, with the exception of four effects: Basic 3D, Gaussian Blur, Fast Blur, and Directional Blur.
It’s worth mentioning one set of things that Premiere Pro doesn’t process using CUDA/OpenCL: encoding and decoding.