To Cool Computer Chips, Tiny Water Pipes

By Eliza Strickland | June 6, 2008 12:39 pm

computer chipEach year, as electronic devices get smaller and capable of performing more outlandish functions, engineers in the back rooms of computer chip manufacturers sweat a little more. The exponentially-increasing number of transmitters that can be placed on a circuit board (a phenomenon known as Moore’s law) brings with it one major technological obstacle: a rise in heat produced by the electrons that zip through the tiny wires on each chip.

Computer engineers have experimented with many different solutions to the heat problem, including fans and heat sinks. Yesterday, IBM announced a radically new approach, and unveiled stacks of chips cooled by thousands of hair-thin pipes filled with flowing water.

An IBM spokesperson said the need for a new tactic became apparent as the company worked on its 3D chips, which are stacked on top of each other instead of arranged side-by-side in the traditional manner. This arrangement reduces distances between circuits and therefore reduce processing time, but it’s also prone to overheating.

“As we package chips on top of each other….we have found that conventional coolers attached to the back of a chip don’t scale,” explained Thomas Brunschwiler at IBM’s Zurich Research Laboratory. “In order to exploit the potential of high-performance 3D chip stacking, we need interlayer cooling” [BBC News].

Water pipes are already used to cool some high-end servers and supercomputers, but those existing systems pump the water past the processor; the new IBM approach is the first to put the pipes inside the chips themselves. While that may conjure up nightmare images of a short-circuiting computer, IBM says the water pipes will be perfectly harmless.

In IBM’s design, the liquid travels through hermetically sealed, double-layered tubes of silicon and silicon oxide that are roughly .002 inches (about the width of a hair) in diameter keeping the H2O well insulated from delicate components [PC World]. The company hopes to bring the technology to its commercial products within five years.

Image: flickr/Dano

CATEGORIZED UNDER: Technology
MORE ABOUT: circuits, computers, IBM
  • Brian

    …and in a new development, the Corporate Corp. announced a new era of tiny little programmers carrying tiny flyswatters, the better to combat the tiny little bugs running around the latest tiny processor!

  • http://www.hoshan.org Tarik

    With pipes that thin, water must be pure to avoid clogging. Is water the best liquid coolant?

NEW ON DISCOVER
OPEN
CITIZEN SCIENCE
ADVERTISEMENT

Discover's Newsletter

Sign up to get the latest science news delivered weekly right to your inbox!

80beats

80beats is DISCOVER's news aggregator, weaving together the choicest tidbits from the best articles covering the day's most compelling topics.
ADVERTISEMENT

See More

ADVERTISEMENT
Collapse bottom bar
+

Login to your Account

X
E-mail address:
Password:
Remember me
Forgot your password?
No problem. Click here to have it e-mailed to you.

Not Registered Yet?

Register now for FREE. Registration only takes a few minutes to complete. Register now »