Recommandation for transcode Intel Core i5-13500 or Intel Xeon E3-1275v5

[JDM_WAAAT]

Both are extreme overkill. Have you looked at the Quicksync guide?

[Guide] Hardware Transcoding: The JDM way! QuickSync and NVENC

Intel QuickSync Intel’s QuickSync makes use of your Intel CPU’s onboard GPU (make sure it has one) to accelerate transcoding. Early on, QuickSync had a reputation for being relatively pointless because it was not very capable and the resulting quality was quite poor. However, Intel continues to improve QuickSync quite drastically with each generation. Typically, the quality and performance of QuickSync has more to do with the generation of CPU than it does with the model number of the CPU. For …