MacBook Pro HD speed question

messiahmessiah
Posted:
in Genius Bar edited January 2014
Okay, so I've just tested two MacBook Pro Core Duo laptops with Xbench, and it returned some unexpected results...



The 15" MBP, which has an upgraded 7200rpm HDD mechanism, appears to be slower (lower score) than the 17" MBPs 5400rpm mechansim.



The 15" has a 1.83GHz CPU, and the 17" a 2.16GHz CPU, but I'm unsure if this would make any difference to the HDD scores?



Can this be right, or is Xbench inaccurate?



Cheers...

Comments

  • Reply 1 of 5
    smaxsmax Posts: 361member
    Drive speed is not the only thing that determines exctly how fast a drive is. Platter density is a big factor too.



    Let me guess: the 17" has a higher capacity than the 15"?
  • Reply 2 of 5
    messiahmessiah Posts: 1,689member
    Quote:
    Originally Posted by smax View Post


    Drive speed is not the only thing that determines exctly how fast a drive is. Platter density is a big factor too.



    Let me guess: the 17" has a higher capacity than the 15"?



    Yup! The 15" is a 100GB, and the 17" is a 120GB.
  • Reply 3 of 5
    messiahmessiah Posts: 1,689member
    So would the 200GB, 4200rpm drive be faster still?
  • Reply 4 of 5
    smaxsmax Posts: 361member
    That is the milion dollar question... but everyone seems too turned off by the fact that it's only 4200 RPM. What they don't realize that there MIGHT be less power consumption because of the slower rotational speed and it would probably be faster than, say, a 120GB 5400 RPM drive. The seek times will be longer though. I have no idea what exactly is faster than what though, and I'm not about to shell out hundreds of dollars to benchmark a bunch of different hard drives.



    Why do people have to be hatin' the 4200 RPM drives?
  • Reply 5 of 5
    cardiacdavecardiacdave Posts: 3member
    here's results for the 200GB drive for ya, on a MBP 2.33 w/2gig of ram.



    Disk Test\t34.13\t

    \t\tSequential\t46.39\t

    \t\t\tUncached Write\t64.93\t39.86 MB/sec [4K blocks]

    \t\t\tUncached Write\t43.29\t24.49 MB/sec [256K blocks]

    \t\t\tUncached Read\t29.85\t8.74 MB/sec [4K blocks]

    \t\t\tUncached Read\t70.27\t35.32 MB/sec [256K blocks]

    \t\tRandom\t27.00\t

    \t\t\tUncached Write\t10.12\t1.07 MB/sec [4K blocks]

    \t\t\tUncached Write\t58.09\t18.60 MB/sec [256K blocks]

    \t\t\tUncached Read\t51.19\t0.36 MB/sec [4K blocks]

    \t\t\tUncached Read\t79.33\t14.72 MB/sec [256K blocks]
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