Recently, CPU Manufacturers seem to be getting the hint that we? want fast, efficient hardware, rather than the bloated “Coal Fired Servers” (Thanks for that one, Andrew!) we are used to.
Intel announced “Sossaman” on Tuesday. This is a “low power” dual-core Xeon based 32-bit processor. Because of the 32-bit catch, HP won't use them. IBM, however, is ramping up production. This new chip uses a max of 31 watts of power compared with 110 to 165 watts for other Xeon models.
We will see how these go up against AMD's Opteron's.
Several studies have been conducted showing that when idle, Opteron-based systems tend to use about 40 percent less power than similarly equipped Woodcrest-based systems.
AnandTech's Low Power Server CPU Shoot Out has some very good info.
Also check out this InfoWorld article saying that AMD is more power-efficient than Intel.
If you are interested, Neal Nelson& Associates has published a white paper on the subject of standardizing test methodology to measure and report the power consumption and power efficiency of modern server systems.
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