Google t4 (GPU vs TPU)

I am working on IMDB sentiment analysis using embedding + CNN. Why is there a big difference in computation time, with GPU (~9 seconds per epoch) being faster than TPU (~17 seconds per epoch), even though TPUs are supposed to be more powerful?

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This comment has very little context, however it may be worthwhile to experiment with higher sample sizes and see whether it makes a difference.

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Google Colab offers free access to both T4s and TPUs for experimentation and lets you test which one works best for your specific workload.

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I experienced comparable problems. Look at this.