Browse Definitions :
Definition

3-D chip (3D chip)

A 3-D chip is an integrated circuit ( IC ) containing a three-dimensional array of interconnected devices performing digital, analog, image processing and neural-network functions, either individually or in combination.

See an image of a thinned wafer used to create a 3-D chip

3-D chip technology solves a number of issues that have been challenging chip manufacturers looking for performance increases and reductions in processor size. As chips have grown smaller and more powerful, the wires that connect the increasing numbers of transistor s have necessarily become both thinner and closer together, resulting in increased resistance and overheating. Both can cause signal delays, limiting the clock speed of central processing unit s.

In April 2007, a new version of 3-D chips was announced by a partnership of IBM and Rensselaer Polytechnic Institute (RPI) researchers at the IBM T.J. Watson Research Center, with support from the Defense Advanced Research Project Agency ( DARPA ). These 3-D chips layer one chip upon another using a technique called wafer bonding . While some companies currently package processors by layering one upon another, IBM's technique uses one base layer of silicon with active wafers layered on top. This allows engineers to place a processor on the bottom of the stack and then layer memory or other components across the top, resulting in a thousand-fold decrease in connector length, as chips are no longer organized in a two-dimensional layouts with wires connecting transistors at the periphery of chips. This reduces the distance data has to travel, resulting in much faster processing. Similarly, a hundred-fold increase in connector density dramatically reduces the size of the chip.

IBM 's engineers used a new method of manufacturing called through-silicon vias that allows multiple chip components to be stacked upon one another vertically, creating faster, smaller and lower-power CPU s (central processing units). Through-silicon vias also allow for more efficient heat dissipation up through the stack to cooling systems and, according to IBM, improve power-efficiency in silicon-germanium based products up to 40%, resulting in longer battery life.

IBM expects to begin production of 3-D chips in 2008. "Big Blue" will be applying the technology initially in mobile devices and wireless communications. Memory-on-processor technology will be available for use in servers and supercomputers in 2009. Intel used a similar 3-D chip structure in February 2007 capable of teraflop processing (a trillion calculations per second), effectively performing calculations as quickly as a complete data center while consuming a tiny fraction of the energy. Either of these improvements may allow the extension of Moore's law well into the 21st century.

This was last updated in March 2011

Continue Reading About 3-D chip (3D chip)

SearchCompliance
  • OPSEC (operations security)

    OPSEC (operations security) is a security and risk management process and strategy that classifies information, then determines ...

  • smart contract

    A smart contract is a decentralized application that executes business logic in response to events.

  • compliance risk

    Compliance risk is an organization's potential exposure to legal penalties, financial forfeiture and material loss, resulting ...

SearchSecurity
  • email virus

    An email virus consists of malicious code distributed in email messages to infect one or more devices.

  • key fob

    A key fob is a small, programmable device that provides access to a physical object.

  • identity theft

    Identity theft, also known as identity fraud, is a crime in which an imposter obtains key pieces of personally identifiable ...

SearchHealthIT
SearchDisasterRecovery
  • What is risk mitigation?

    Risk mitigation is a strategy to prepare for and lessen the effects of threats faced by a business.

  • change control

    Change control is a systematic approach to managing all changes made to a product or system.

  • disaster recovery (DR)

    Disaster recovery (DR) is an organization's ability to respond to and recover from an event that affects business operations.

SearchStorage
  • JBOD (just a bunch of disks)

    JBOD, which stands for 'just a bunch of disks,' is a type of multilevel configuration for disks.

  • bare-metal restore

    A bare-metal restore (also referred to as bare-metal recovery or bare-metal backup) is a data recovery and restoration process ...

  • mSATA SSD (mSATA solid-state drive)

    An mSATA SSD is a solid-state drive (SSD) that conforms to the mSATA interface specification developed by the Serial ATA (SATA) ...

Close