Opteron More Energy Efficient Than Woodcrest?
That translates to annual electricity savings between $20.29 per server and $36.04 per server, depending on the workload, the study concluded. At idle speeds, it amounts to a $99.76 per-server, per year saving.”
AMD is gearing up to start selling their native quad-core technology, dubbed Barcelona, which is rumored to be more energy efficient than the Opterons of today. Intel isn’t sitting idle in the area of efficiency either, so don't start calling the next round just yet. Considering the massive leap in energy efficiency that Intel made when they moved from Netburst to Core designs, their upcoming "Penryn" chip family might be more evolutionary than revolutionary. It will certainly be worth watching to see how Penryn does against Barcelona.