In the first two generations of heat sinks, the RSX and Cell were both cooled by one giant heat sink, but now they are cooled by two separate ones. Copper heat pipes are no longer used. Power consumption is down to about 135W, compared to launch PS3's using about 200W's. It also cuts the weight in half, from 700g to 350g because it's using fewer components. Sure, it's all technical, but it's awesome to see how much our lovely machine is evolving without us ever really noticing. Nice job, Furukawa Electronics.