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Samsung 830 vs Samsung 840 vs Crucial m4

Discussion in 'Solid State Drives (SSDs) and Flash Storage' started by tranquility1337, Oct 1, 2012.

  1. tranquility1337

    tranquility1337 Notebook Guru

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    which is better? i see that samsung 830 is at

    Features

    Up to 520MB/s Sequential Read Speed
    Up to 400MB/s Sequential Write Speed
    80K IOPS Random Read Speed
    36K IOPS Random Write Speed


    while 840 is

    Features

    Up to 540MB/s Sequential Read Speed
    Up to 250MB/s Sequential Write Speed
    96K IOPS Random Read Speed
    62K IOPS Random Write Speed

    How come the Sequential Write Speed got lower?

    and Crucial m4 is Performance

    Sustained Sequential Read: Up to 500 MB/s (SATA 6Gb/s)
    Sustained Sequential Write: Up to 260 MB/s (SATA 6Gb/s)
    4KB Random Read: Up to 45,000 IOPS
    4KB Random Write: Up to 50,000 IOPS

    i mean like is it possible you guys can explain the meaning of each? thx
     
  2. anseio

    anseio All ways are my ways.

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    I think seq. write got lower because that's a number that only means anything when moving large files to and fro. How often does that happen in everyday usage compared to the daily ins and outs of using the OS?

    Random access and IOPS are much more important to real world usage.
     
  3. tetsussaiga

    tetsussaiga Notebook Evangelist

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    Where are you getting that data? Sequential write speeds should be around 450MB/s:

    Samsung SSD 840 Pro (256GB) Review

    The 840 is undoubtedly the fastest drive right now.
     
  4. tranquility1337

    tranquility1337 Notebook Guru

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    the 840 and 840 pro are different.
     
  5. tetsussaiga

    tetsussaiga Notebook Evangelist

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    Ah, sorry I didn't see that.
     
  6. tranquility1337

    tranquility1337 Notebook Guru

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    is samsung 830 better or the samsung 840?

    i know the pro is better but not sure about 840 and 830
     
  7. sgogeta4

    sgogeta4 Notebook Nobel Laureate

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    The 840 is still better than the 830. Thessdreview has reviews up for the 830, 840, 840 pro, and crucial m4.
     
  8. tilleroftheearth

    tilleroftheearth Wisdom listens quietly...

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    At this point in time, I would say the 830 is still the superior driver overall if battery life isn't a consideration (when the storage subsystem is pushed hard for long periods of time).

    The 840 'scores' better and the power consumption has been greatly improved at load; but it is still an unproven part now (and at least for the next half year or so).
     
  9. Encrypted11

    Encrypted11 Notebook Evangelist

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    The 840 Pro uses MLC NAND while 840 Standard uses TLC NAND which happened to be used only on things like Flash Drive NANDs, Smartphone NANDs and such with lower write endurance. If I'm correct, the rated P/E is 1000 as opposed to usual 3000, 5000. Also, they're both using a 21 or 20nm manufacturing process.. so basically for the user, more energy efficiency and such... For Samsung, cost savings for making more out of less material.

    If things goes well as expected, the standard 840 would still be reliable...
    The conditions:
    -it's Samsung MDX Controller prevents write amplification really well
    -Improved TRIM and Garbage collection

    It is said that the efficiencies and tight controls of the controller will allow the Samsung 840 standard to maximise it's NAND's life and allow it to live as long as a reliable SSD you can find on the market today.

    BTW currently, a number of Samsung 830s received some price cuts. The 128GB model and 84GB model has reached price parity with the Crucial M4. On Newegg sometimes. Amazon direct too. Imo, the 830's a better buy than the Crucial m4.
     
  10. jaug1337

    jaug1337 de_dust2

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    The 840 isn't worth it. The 840 PRO is, just keep yourself to either the 830 or M4, you can't go wrong with either of them ;)
     
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