The last results for this article is from an AMD Fusion E-350 APU system with integrated Radeon HD graphics. The E-350 "Zacate" is a dual-core part clocked at 1.60GHz.
The Fusion E-350 system idled at about 38 Watts.
Under the NPB EP.C workload, the average power consumption for the low-end Fusion E-Series system jumped to 45 Watts.
While burning through 45 Watts, the dual-core E-350 averaged 23.34 Mop/s. This result comes ahead of the 4-core PandaBoard ES cluster configuration (18.41 Mop/s) but behind the 6-core result (26.97 Mop/s).
While on a per-core basis the Fusion E-350 did much better, the power efficiency put the Effimaß cluster ahead. The E-350 averaged 0.52 Mop/s where as the cluster and single PandaBoard ES configurations were three times more efficient per Watt.