People are becoming more aware of power consumption, thanks to rising fuel and heating costs. We measured the system at the socket with a power meter. We recorded results when Idle, under Cinebench (CPU) load, and then with the final test in 3DMark 11 which loads both CPU and GPU.
Power consumption is very impressive. It is worth bearing in mind that an AMD FX 8150 system we tested recently was consuming over 400 watts of power, without loading the graphics card at all. 221 Watts is all the Core i5 2500k demands @ 4.8ghz.