The Xeon server would be a good bet. Your other machine would be potentially bottleneck for memory. There’s a NOAVX deployment available, would be slower but should work fine. Just be sure to disable anything associated with lyric detection, it’s an absolute performance nightmare.

I ran it onaRyzen 5500u with 32 GB RAM with the standard deployment with AVX2 support and scaled up to three worker threads. For a collection of 53k tracks it was processing about 100 per hour that way with lyrics/whisper translation enabled, but once I turned that off it was doing 1300-1400 tracks per hour.