Why do CPUs Need Caches? – Computerphile

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We’ve all heard of web browser caches, but why does a super fast modern CPU need a cache? Because it’s too fast. Dr Steve “Heartbleed” Bagley explains.

Professor Steve Furber on Building the BBC Micro: https://youtu.be/y4WG549i3YY
How Computer Memory Works: https://youtu.be/XETZoRYdtkw
Why Asimov’s Laws Don’t Work: https://youtu.be/7PKx3kS7f4A
The Problem with JPEG: https://youtu.be/yBX8GFqt6GA

http://www.facebook.com/computerphile

This video was filmed and edited by Sean Riley.

Computer Science at the University of Nottingham: http://bit.ly/nottscomputer

Computerphile is a sister project to Brady Haran’s Numberphile. More at http://www.bradyharan.com

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