Quantcast Samsung HM640JJ 640GB 7200rpm 2.5" Hard Drive (9.5 mm standard height) - Page 5

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  1. #41
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    Default Re: Samsung HM640JJ 640GB 7200rpm 2.5" Hard Drive (9.5 mm standard height)

    Quote Originally Posted by paradoxguy View Post
    Despite the HM640JJ's appeal, I am still drawn to the WD5000BEKT because it is, by a narrow margin, the best-performing notebook HD available (based on professiounal and lay user reviews)
    Have you found a review that compares both in real world scenario's? I haven't.

    The only real world data I do have is the AS-SSD file copy benchmark, where the Samsung HM640JJ beats the WD5000BEKT.

    I expect the WD5000BEKT will only be faster during heavy multi tasking but I don't have any data for it.

    At those prices I'd go for the Samsung.

  2. #42
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    Default Re: Samsung HM640JJ 640GB 7200rpm 2.5" Hard Drive (9.5 mm standard height)

    I found a quick benchmark review here:

    TREADLAYERS.COM: MEGA-CAPACITY 2.5" HDDs: WD10TPVT, SAMSUNG HM640LI and HM100UI

    The disk has been benchmarked in crystal disk mark 3.0 and atto disk benchmark.

    ========================

    I got this HDD on monday and I am not impressed. I guess it has some mechanical problems.

    HD Tune's SMART reports a warning on the calibration retry count attribute - the DATA value is constantly rising - at the moment it is @ 465...

    Also there is a warning at UltraDMA CRc error count - the DATa value shows 64 and reallocated sectors count is 10.

    The weird thing are the reports of other SMART utilities I tried:

    crystal disk info showed problems with reallocated sectors count only but the warning disappeared during the day. Hard disk sentinel, Disk Checkup, Active SMART, Personal SMART Check DID NOT show any problems.


    HD Tune shows abnormal spikes during the whole reading benchmark (it shows up even if shortstroked to 160GB). No smooth reading line there, as shown in the very first picture of this thread, I am wondering.

    I tried the disk in an external eSATA enclosure, in a notebook (dell xps m1530) and on a desktop. always the same story.

    When I tried the writing benchmark there was bettering in terms of smoothness but the speed was nowhere near 100MB/s at the beginning of the platter...

    Could this be a firmware thing? My firmware is 2AK10001. Production date 2010.09.

    I will try to return the disk and ask for a new one.
    Attached Thumbnails Attached Thumbnails HM640JJ weird.JPG  

  3. #43
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    Default Re: Samsung HM640JJ 640GB 7200rpm 2.5" Hard Drive (9.5 mm standard height)

    I think we have proof that HDTune doesn't like the HM660JJ
    Attached Thumbnails Attached Thumbnails HM660JJ ZOMG.png  

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  4. #44
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    Default Re: Samsung HM640JJ 640GB 7200rpm 2.5" Hard Drive (9.5 mm standard height)

    If anyone interested, I found some comparison info on the following HDD's:
    Hitachi Travelstar 7K500, Samsung Spinpoint MP4 HM640JJ, Seagate Momentus 750GB, Western Digital Scorpio Black WD5000BEKT

    Notebook hard drives square off at 7,200 RPM - The Tech Report - Page 1

  5. #45
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    Default Re: Samsung HM640JJ 640GB 7200rpm 2.5" Hard Drive (9.5 mm standard height)

    Aren't these the drives that come standard in the new Dell XPS notebooks? Except they have the 500gb version

  6. #46
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    Default Re: Samsung HM640JJ 640GB 7200rpm 2.5" Hard Drive (9.5 mm standard height)

    If you see a "640GB 7200RPM" option then it is indeed the Samsung drive; no other hard drive brand has one.
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  7. #47
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    Default Re: Samsung HM640JJ 640GB 7200rpm 2.5" Hard Drive (9.5 mm standard height)

    hi there, i have bought hm640jj and put into notebook hp 6710b. i have installed new ms xp sp3 but not in ahci mode (sata native). now i am not able to install neither intel matrix... nor ahci driver due to incompatibility (???) problems.
    have done hdtunepro benchmark and here is result:

    is this due to non ahci mode? or something else is wrong?
    thanks
    marian

  8. #48
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    Default Re: Samsung HM640JJ 640GB 7200rpm 2.5" Hard Drive (9.5 mm standard height)

    Marian -- those results indicate something else is taking up the disk I/O while HD Tune is running. What kind of antivirus program do you have and what other programs are running in the background?
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  9. #49
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    Default Re: Samsung HM640JJ 640GB 7200rpm 2.5" Hard Drive (9.5 mm standard height)

    Finally got around to comparing my HM640JJ to my old Seagate 5400rpm 8mb drive that came standard in the E6400. The Samsung is on the left, I cut the partition size down.

    E6400: P8600, 4500MHD, 4GB, Patriot Torq 2 64GB SSD

  10. #50
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    Default Re: Samsung HM640JJ 640GB 7200rpm 2.5" Hard Drive (9.5 mm standard height)

    Quote Originally Posted by Charles P. Jefferies View Post
    Marian -- those results indicate something else is taking up the disk I/O while HD Tune is running. What kind of antivirus program do you have and what other programs are running in the background?
    thanks for reply.
    i have avira but same if disabled. i have disabled also tuneup utilities.
    also tried hd tune pro in mini windows xp (hirens bootable cd) and same result.
    are there any similar utilities under dos? to avoid anything in backround.
    maybe hdd is not ok?

    edit: i have benchmarked also with sysinternals process monitor turned on (showing only file system activity) and only hd tune pro operations have been logged.
    Last edited by lentak; 11th December 2010 at 02:20 PM.

 

 
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