Calxeda has 5 watt web server based on the EnergyCore ECX-1000 1.1GHz processor. Compared to Intel’s 3.3GHz Xeon E3-1240, the results were surprising according to ZDNet.
This makes the Calxeda SOC (Server on a chip) ARM hardware 15 times more power-efficient that Intel’s hardware. According to Calxeda, this translates into a 77 percent reduction of overall total cost of ownership over three years.
And CPU performance is quite acceptable.
While the EnergyCore ECX-1000 is not as powerful as the Xeon E3-1240 — with it only able to handle 5,500 requests per second compared to 6,950 for the Intel hardware — it manages this performance while consuming a little over 5 watts, compared to over 100 watts for the Intel processor.
Multiply a thousand times, you see the potential savings.