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    Samsung 840 EVO: Are these speeds normal

    Discussion in 'Hardware Components and Aftermarket Upgrades' started by Amerika, Jan 22, 2014.

  1. Amerika

    Amerika Notebook Guru

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    Just installed the Samsung 840 EVO 120 GB into my new Lenovo Y510p. I installed the Samsung Magician software, applied optimizations, and then did some benchmarking. The 10:32 AM (latest) benchmark was done with RAPID mode on. I'm just wondering if the speeds with RAPID disabled are normal? I was expecting them to be a bit higher. Also, does having RAPID enabled at all times negatively affect the SSD?
     

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  2. Cloudfire

    Cloudfire (Really odd person)

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    Nope the SSD is not running optimal.

    Specs of Samsung 840 EVO 120GB is as following:
    Read: 540MB/s (you got 281MB)
    Write: 410MB/s (you got 254MB)

    Read IOPS: 94 000 (you got 51 000)
    Write IOPS: 35 000 (you got 40 000)

    Looks to me like you are running in SATA2 which have a limit on 300MB/s. You need an available SATA3 port to get above 300MB/s speeds.
     
  3. Amerika

    Amerika Notebook Guru

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  4. RCB

    RCB Notebook Deity

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    Usually there are only 2 SATA III ports for notebook computers. Unless there is only space for 1 internal drive and the other SATA III port was given to the OD.

    Most likely you're going to have SATA II capability available for that caddy.
     
  5. Tinderbox (UK)

    Tinderbox (UK) BAKED BEAN KING

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  6. Amerika

    Amerika Notebook Guru

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    So you think it's an issue with the caddy? Can I just swap the locations of the HDD and SSD?
     
  7. RCB

    RCB Notebook Deity

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    That would be ideal. HDD is much slower so give it the slower port. You can look up the processor and chipset to find out the support it has built in. Check the Mfr. laptop spec. The OD might even be SATA I.
     
  8. Amerika

    Amerika Notebook Guru

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    Here you go. I disabled RAPID mode.



     

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  9. Tinderbox (UK)

    Tinderbox (UK) BAKED BEAN KING

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    Yeah, it looks like the Caddy is only SATA2, can you swap your hdd and ssd around?

    John.
     
  10. Amerika

    Amerika Notebook Guru

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    I will try that tonight and re run the tests. Thanks for all the suggestions.
     
  11. Amerika

    Amerika Notebook Guru

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    Swapped drives and I'm getting advertised speeds now:

    Sequential Read: 550 MB/s
    Sequential Write: 540 MB/s