Yeah, that's definitely an Atom (or Intel is calling them low power cores now). It's fine, you're clearly happy with the product and Atoms are generally ok (other than some issues with Bay Trail that resulted in an early end of service in early steppings), but the cores are roughly 50% the performance of contemperaneous mainstream cores, and it's often not totally clear when comparing a Celeron to another Celeron that one has half as powerful cores.