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New PS4 Details: Automatic Caching Games Not Install

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#46 Phemo


    Neowinian Senior

  • Joined: 04-February 04

Posted 04 November 2013 - 16:48

Blu-ray read speed is 6x (216Mb) vs. SATA III hard drive @ 5400RPM (125Mb)


You are confusing your bits and bytes.  6x BD is indeed 216Mb/sec (megabits) but there are 8 bits to a byte so this is 27MB/sec (megabytes).  A 2.5" 5400rpm drive, as said in another post, is going to be around 85MB/sec which is 680Mbit/sec.  A hard drive is significantly faster than BD and even if the raw transfer rate was to be close at all, the seek times are not.