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Remotely Located Low Temperature Refrigeration System for Computers

IP.com Disclosure Number: IPCOM000014869D
Original Publication Date: 2000-Mar-01
Included in the Prior Art Database: 2003-Jun-20
Document File: 4 page(s) / 40K

Publishing Venue

IBM

Abstract

Chip speeds are well known to increase by lowering chip temperatures. Current CMOS chip circuit designs perform approximately 2% faster for each 10C that the chip temperature is lowered. Existing refrigeration technologies are able to lower chip temperatures by roughly 100C, hence yielding the potential for 20% speed increases. All existing low-temperature cooled computer offerings include the refrigeration system within the confines of the computer, hence resulting in either a taller computer or a larger footprint. However, many product segments are very sensitive to overall product dimensions. As such, having the flexibility to remotely locate the refrigeration system provides a competitive/marketing advantage. Product segments which are sensitive to product volume include, but are not limited to: 1) Desktop computers in which minimization of the product dimensions is extremely important. Increasing the computer footprint reduces the available workspace, while increasing the computer height moves the monitor to unacceptable heights. 2) Deskside computer where increasing the box height would not allow the system to fit under a table or counter.

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Remotely Located Low Temperature Refrigeration System for Computers

Chip speeds are well known to increase by lowering chip temperatures. Current
CMOS chip circuit designs perform approximately 2% faster for each 10C that
the chip temperature is lowered. Existing refrigeration technologies are able
to lower chip temperatures by roughly 100C, hence yielding the potential for
20% speed increases. All existing low-temperature cooled computer offerings
include the refrigeration system within the confines of the computer, hence
resulting in either a taller computer or a larger footprint. However, many
product segments are very sensitive to overall product dimensions. As such,
having the flexibility to remotely locate the refrigeration system provides a
competitive/marketing advantage.

Product segments which are sensitive to product
volume include, but are not limited to:

1) Desktop computers in which minimization of the
product dimensions is extremely important.
Increasing the computer footprint reduces the
available workspace, while increasing the computer
height moves the monitor to unacceptable heights.

2) Deskside computer where increasing the box
height would not allow the system to fit under a
table or counter.

3) Deskside computer where increasing the box
footprint would not fit or would result in fewer
installations in a given floorspace.

4) Rack systems where increasing the system height
would allow fewer systems to be installed per rack.

Three distinct packaging methodologies for
incorporation of the refrigeration system within
the computer chassis are given in Figure 1.

These correspond to:

a) The computer packaging is modular in
construction. The refrigeration system itself is
installed within the system and occupies one or
more "bays" within the system.
b) The refrigeration system is within a pedestal
which has essentially the same footprint as the
computer, but is placed beneath the computer and
results in an incre...