My RPi4s and 3s will out perform my older laptops, apart from the just retired P50 (gpu nearly died). That one is 6y, the others are 11y old HPs and a 16y 32 bit Xxodd (wierd brand). tje RPis are sufficient for normal server use, the nwew laptop (last gen i9 with 64G mem) can host (nested) kvm clients, so no need for extra hardware. (And still I save them, just in case ;) )