[tor-relays] Question about relay speed

Hello! I'm running a non-exit relay on my VPS with small amount of traffic/month. That means my advertised bandwidth is ~500 KB/s. I got a new VPS where I want to let a relay run with several MB/s - My question now is: should I let the slower relay run (aka do 500 KB/s positively contribute to the TOR network?) or move my relay key to the new server and run this one only? Thanks in advance!