Article: AMD's Mobile Strategy
By: EduardoS (no.delete@this.spam.com), December 20, 2011 3:50 pm
Room: Moderated Discussions
Seni (seniike@hotmail.com) on 12/20/11 wrote:
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>-Individual flash chips are not fast, so you can't use just one. It takes four
>to eight of them just to match the sequential write speed of a conventional hard drive.
But one or two chips are enough for a cache, they don't have to exceed or even match the sequential write speeds of conventional disks since sequential reads/writes can bypass the cache, they only needs to cache random accesses.
What really disapoints me is the current state of low end flash caches, only software caching (impossible to be good without risking data integrity) or incomplete hardware caches like Momentus XT.
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>-Individual flash chips are not fast, so you can't use just one. It takes four
>to eight of them just to match the sequential write speed of a conventional hard drive.
But one or two chips are enough for a cache, they don't have to exceed or even match the sequential write speeds of conventional disks since sequential reads/writes can bypass the cache, they only needs to cache random accesses.
What really disapoints me is the current state of low end flash caches, only software caching (impossible to be good without risking data integrity) or incomplete hardware caches like Momentus XT.
