AMD Athlon II X2 240e 2.8 GHz @ PCStats

"Do you leave your computer on all the time? If you've nodded yes to any of the above, it might be time to think about a more power-efficient processor. That's the idea behind AMD's Athlon II X2 240e. It's a 2.8GHz dual-core processor based on the AMD "Regor" core with a TDP of just 45W. The "e" behind the Athlon II X2 240e model name indicates that it's one of AMDs Energy Efficient processors."