LowTemperature Cooling for the PC

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Low-Temperature Cooling for the PC

• By David Coleman

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Agenda

• Background Information
• Advantages of Low-Temperature
• Disadvantages of Low-Temperature
• Efficiency in PC
• Project Summary

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Background Information Why?

• Increase chip power
• Increase chip number
• Operating temperature around 60C 100C

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Background Information Alternatives Systems
1986 First liquid cooled computer shipped 1996
First refrigerated computer shipped 1997 IBM,
Sun Microsystems, AMD, DEC, etc shipped
refrigerated servers 1999 First refrigerated
1-GHz computer shipped
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Speaking of the Refrigerator

• In 1834 the basic refrigerator was born.
• Charles Tellier (France)
• It was purchased by a company in New Orleans.for
  what?

• To preserve the flavor of their beer and
  ale.

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Background Information IBM S/390 G4 System
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Advantages of Low-Temperature

• Increased CMOS performance
• 1.4 every 10C reduction
• Less leakage current
• 100C (-50) C

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Disadvantages of Low-Temperature

• Cost
• Space
• Power (AC/DC Source)
• Condensation
• Die failures

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Efficiency in PC

• Space
• Power
• Cost
• Necessity
• Support

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PC Gateway 7200XL

• New Motherboard Layout (BTX)
• Quiet/Cool
• Reliable
• Expandable with new technologies

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Project Summary

• What types of systems are being used today in
  high-end computers?
• Would it be efficient to implement these in PCs?
• Are there alternative methods to produce a
  low-temperature computing system?
• What are the factors that limit how far a
  computer can be cooled?

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Sources

• http//products.gateway.com/products/GConfig/prodD
  etails.asp?system_id7200xlbseggs
• http//www.research.ibm.com/journal/rd/466/schmidt
  .html