How much can you get out of a $4 VPS?
These tests are basically useless as you never know how much CPU to VCPU oversubscription the provider actually runs at the moment. Problem is, that none of these providers guarantee you anything - if new hardware is hard to procure at the moment they will just increase general oversubscription. Even with a high oversubscription ratio you might be lucky finding yourself on a server where all machines are basically idle all the time and all the power belongs to you.