Intel 'energy-efficient' claim debunked
Written by Daniel   
Wednesday, 16 January 2008 11:12

 AMD Opteron-based servers delivered better power efficiency than comparably configured Intel Xeon-based servers, computer performance consulting firm reports

By Chris Mellor, Techworld.com
January 16, 2008
InfoWorld

Recent tests by Neal Nelson & Associates, an independent computer performance consulting firm, have reported that in 36 of the 57 cases tested an AMD Opteron-based server delivered better power efficiency than a comparably configured Intel Xeon-based server.
After Intel CEO Paul Otellini bragged that Intel's Xeon chip was the most energy-efficient processor, Neal Nelson compared it to AMD's offering and found that Intel wasn't being exactly truthful.



The tests were performed on servers configured with 2, 4, 6 and 8 gigabytes of main memory at various transaction processing load levels. The results show that for certain configurations and at certain load levels the Intel Xeon based server was 2.4 to 11.7 percent more power efficient while in other cases the AMD Opteron based server was 9.2 to 23.1 percent more power efficient. In addition, when the systems were idle and waiting for transactions to process, the AMD server was 30.4 to 53.1 percent more power efficient.

Power consumption while the servers are idle is particularly significant since many servers spend most of their time waiting for work. A November 16, 2006 press release from IBM quotes a report by the Robert Frances Group which states that on average servers in data centers are idle 80 to 85 percent of the time.

The test results also showed that:... More    comment in the forums
 

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