The MFR Auto-Spawner can be used to spawn mobs, much like a vanilla mob spawner. The mod Soul Shards does this as well. I've been told that a tier 5 soul shard spawns mobs faster than the Auto-Spawner, but I want to know how much faster. How fast does an Auto-Spawner spawn things?
The MFR spawners act much like vanilla spawners so you could take a look at the algorithm. They also require power and mob essence to function. The Tier 5 Soul Shard spawner requires nothing to run, and spawns more mobs faster.