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Intel’s Dual-Core Xeon First Look
Intel’s Dual-Core Xeon First Look
Date: December 16th, 2005
Topic: IT Computing
Manufacturer: Intel
Author: Jason Clark & Ross Whitehead
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More processing power has long been the focus of the processor giants, but times are changing. Performance per Watt is the focus for both AMD & Intel for the foreseeable future.

In October of this year, Intel invited AnandTech to its Jones Farm Campus in Portland Oregon. The purpose of the visit was to get a detailed overview of their roadmap for the next year, and to take a close look at the Bensley platform. Bensley is the code name for Intel's new Xeon platform, which will support both Dempsey and Woodcrest processors and a new chipset, code-named Blackford. Demspey is going to take us well into Q2 of next year, and Woodcrest will appear sometime in the second half of next year. Woodcrest will be a lower wattage part that is focused on performance per Watt.

Dempsey is the processor that we're going to take a look at in this article. What we'll be showing benchmarks on is a pre-production Bensley platform. Performance may differ once the platform reaches production status. The key features of Dempsey are: dual-core support, 65nm fabrication and an Independent L2 2MB Cache (2x2MB). Intel will release three variations of the Dempsey processor: a 1066 MHz FSB (130W) version that is the "Performance" version, a 1066 MHz FSB (95W) version that is a rack-optimized part (perf/power for rack density) and a 667 MHz FSB (95W) value version.

The Blackford chipset is all new for Xeon, and addresses one of the main bottlenecks that we've seen in previous Xeon chipsets, front side-bus. Blackford uses a dual independent bus architecture operating at 1066MHz. Memory is now FBD-DDR2 (Fully Buffered DIMM) running at 533MHz, which offers up to 17GB/s of memory bandwidth.

Bensley Platform Diagram

The future is performance per Watt.   Next Page

 
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67 Comments - Last by Furen, 1510 days ago
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Your cost per month is wrong. by Brian23, 1516 days ago
The cost per month is wrong.

Example:

The intel chip pulls 479W at 100% load.
In 24 hours, that's 24*479 = 11496W/d
Assume 31 days in a month, thats 11496*31 = 356,376W/m = 356kWh/month
Assume 14 cents per kWh 356*0.14 = $49.89 dollars per month

Reply
RE: Your cost per month is wrong. by coldpower27, 1516 days ago
Watt is Joule/Second isn't though??

Reply
RE: Your cost per month is wrong. by Poser, 1516 days ago
In addition to the math being off, the assumption that a datacenter would be paying a similar kW/h rate as a residential customer also seems suspicious. As a major customer, they couldn't negotiate a much better rate?

Reply
RE: Your cost per month is wrong. by coldpower27, 1516 days ago
Actually I think I agree with you.

1 kWH = 3,600,000J

Worse Case Scenario
479W = 479J in 1 Second, 1,724,400J in 1 Hour, 41,385,600J in 1 Day, 1,282,953,600J in 31 Days.

Divide by 1 kWH = 3,600,000
= 356.376kWH

Multiply by 0.14/kWH
= $49.89 Per month, the above poster is correct.

Reply
RE: Your cost per month is wrong. by coldpower27, 1516 days ago
Finally if we assume 40 Centers for 1 Year.

$587.85 for 365.25 Days for 1 Bensley System.

$23,514 Total to Run 40 Systems for 1 Year.

Reply
RE: Your cost per month is wrong. by coldpower27, 1516 days ago

The actual difference between running 40 Opteron Systems & 40 Bensley Systems for 1 Year @ 40-60% Load comes to a difference of $5890.4 ~ 1/10 the amount Anandtech reports.

Reply
RE: Your cost per month is wrong. by Viditor, 1516 days ago
quote:

The actual difference between running 40 Opteron Systems & 40 Bensley Systems for 1 Year @ 40-60% Load comes to a difference of $5890.4 ~ 1/10 the amount Anandtech reports

You're forgetting the cost of cooling (which is much higher than just the CPU...)

Reply
RE: Your cost per month is wrong. by coldpower27, 1516 days ago

They are measuring total power draw of the 2 systems which includes the energy used by the cooling system. I am not forgeting anything. I am only interested in cost of electricity used by the 2 systems.

Anandtech isn't incorporating cost of cooling into it's numbers either.

Reply
RE: Your cost per month is wrong. by Viditor, 1516 days ago
The cooling systems I refer to are the airconditioning, not the HSF or the case fans...
By doubling the heat output, you are also doubling the air con requirements.

Reply
RE: Your cost per month is wrong. by coldpower27, 1516 days ago
Which would be offset by the heating provided in the Winter time.

Reply
Comments Page 1 of 7

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