Depending on workload, this old CPU might be as slow as a 2 thread or even 1 thread current gen server.
Because those big systems are optimized for power efficiency. That Epyc is ~2.4W/core compared to ~16W/core for the old i7. It has a lower base clock and is Zen5c. If we cut the 8-core Ryzen 9850X3D's score in half, 4 Ryzen cores from the same generation but with a higher base clock and six times the L3 cache per core would be 20942. But it's also back up to 15W/core. The Epyc still has better performance per watt.
The newer cores are significantly more efficient. That doesn't mean they're unconditionally faster independent of all other variables.
I think you’re talking about something else. The comment above was about a machine that didn’t have 10TB of storage, 320GB RAM, or unlimited bandwidth.
If you find 320GB of RAM and unlimited bandwidth for 40 Euro monthly then send it over!