Smarter Memory Hard drives are still the most cost-effective way of adding extra storage capacity to a desktop or laptop. They are cheap to buy, easy to use and remarkably robust in service.

Solid-state drives may be quicker, but while the prices of hard drives continue to fall, their capacity goes on climbing, so the overall cost per gigabyte is quickly getting lower and lower.

Our exclusive video has all the info you need to make the right choice.

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Related story

• Watch Smarter: video guide to... memory cards (13 June 2012)

  https://www.theregister.com/2012/06/13/video_guide_to_memory_cards/