Intel 'energy-efficient' claim debunked

Researchers fins AMD Opteron servers can offer better power efficiency

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.

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.

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 per cent more power efficient while in other cases the AMD Opteron based server was 9.2 to 23.1 per cent 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 per cent 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 per cent of the time.

The test results also showed that:

  • Larger memory configurations deliver both higher throughput and better power efficiency
  • Intel's power efficiency advantages decrease as memory size increases,
  • AMD's power efficiency advantages increase as memory size increases,
  • For CPU-intensive workloads, the Xeon delivers 8.0 to 14.0 per cent higher peak throughput,
  • For primarily I/O intensive workloads the Opteron delivers 11.3 to 19.4 per cent higher peak throughput

Neal Nelson conducted these tests in response to a statement made by Intel 's Otellini in a July 18, 2007 analyst conference call. During that call he referred to Intel's "lead in power efficiency". Neal Nelson decided to use his company's benchmark toolset to determine if Intel actually had a lead in power efficiency.

In a somewhat dry comment, Neal Nelson said: "It appears that Mr. Otellini's statement is inconsistent with the test results."

The tests were not financed or sponsored by any company or group.

2015 State of The IT Channel Survey : IT'S TIME!!! Fill in this year's State of the IT Channel Survey and be in the running to win great prizes. CLICK HERE

Join the ARN newsletter!

Error: Please check your email address.

More about AMDHISIBM AustraliaIntelRobert Frances Group

ARN Directory | Distributors relevant to this article

Show Comments
 

Latest News

06:40AM
Can Facebook cement its role as a platform provider?
04:59AM
New 3D NAND flash will triple capacity of SSDs, Intel and Micron say
01:40PM
The Cloud presents the channel with many opportunities: Rhipe
12:42PM
Cisco inks 10-year global deal with Covata
More News
30 Mar
Australian experts to address cybersecurity challenges and solutions at Canberra...
21 Apr
APJ Progress Spark Conference
22 Apr
2015 Innotribe Startup Challenge
27 Apr
Disruptocon
View all events