why is my evo 250 slow in seq read?

Discussion in 'hardware' started by mantra, Jul 9, 2014.

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  1. mantra

    mantra Registered Member

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  2. mantra

    mantra Registered Member

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  3. focus

    focus Registered Member

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    Have you tried testing with Samsung Magician?
     
  4. mantra

    mantra Registered Member

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    hi
    yes are the it's the first screenshow 840 Evo 256
    the second is my 840 128gb

    i tried crystalmark and ismyhdok , these program give me the same results

    thanks for answer
     
  5. Mrkvonic

    Mrkvonic Linux Systems Expert

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    When you wrote evo, I thought Mitsubishi Evo with 250 hp ... :)
    Mrk
     
  6. focus

    focus Registered Member

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    This is weird, I get insane results from Magician 4.4, 3314 seq read, 4299 seq write. I'm using rapid mode but my numbers seem a bit high, I tried ismyhdok and got this:

    Is.png

    Too big of a difference from yours, I don't know what is going on.
     
  7. Brian K

    Brian K Imaging Specialist

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    mantra,

    What do you make of the slow seq write speed with the 840 128 GB?

    Can you try Atto with both drives and post screenshots?
     
  8. mantra

    mantra Registered Member

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    hi
    did you try it without rapid mode?
    and the last version of magician doesn even optimaze my drive , it stats and finishs after 2 seconds
    can't find the prev. version :(
    thanks

    840 128 gb is perfect , the write spped is ok
     
  9. Brian K

    Brian K Imaging Specialist

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    The Evo is 531 and the 840 is only 131.
     
  10. mantra

    mantra Registered Member

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    the 840 (not pro) has a max write speed of 130
     
  11. Brian K

    Brian K Imaging Specialist

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    Are you sure? A mechanical HD can match that speed.
     
  12. mantra

    mantra Registered Member

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  13. mantra

    mantra Registered Member

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    with Rapid off i get this
     

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  14. focus

    focus Registered Member

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    Here is a comparison, Rapid on, Rapid off, Rapid back on:

    EvoComp.jpg

    So Rapid does something good, but I still do not understand the wildly higher numbers for the sequential operations.
     
  15. mantra

    mantra Registered Member

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    thanks a lot Focus
    i download the prev version of samsung magician , and i will test it
    i guess it's a buggy program , at least i tried samsung magician 4.4 (the last version ) and i tried to optimaze the drive , it keeps 2 seconds (weird)
    the prev version , keept at least 2 minutes

    do you use only samsung magician 4.4 ?
    or other softwares?

    thanks again!
     
  16. focus

    focus Registered Member

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    Just 4.4.
     
  17. mantra

    mantra Registered Member

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    hi
    i'm looking for the prev.
    the drive optimazion keeps only 3 seconds ,with rapid off, i guess it's buggy!
     
  18. Rules

    Rules Registered Member

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    @mantra,

    Yeah very fast for me too with the latest magician software, but i think it's normal, other software like Elphamsoft ssdtweaker did the trim optimisation very fast (6-8 seconds).
    There is a tool named trimcheck, but this tool doesn't verify optimization (i mean sending of TRIM/UNMAP commands).

    Samsung Magician software 4.4 release :

    -Support new model 850 Pro(nearly october 2014)
    -Rapid v1.1 (able to cache up to 4Gb)
    -PCIe SATA card, Marvell chipset support
    -Remove the UAC alarm
    -Retain the optimization mode when updating the Magician
    -Improve the operation speed of Performance Optimization.

    So, i post my benchmark (rapid mode enabled) and realtime security products during the test with my ssd 840 pro 256B, AHCI mode, if you get these nearly result, i think all is fine (my opinion).

    rules.

    vroum.PNG tray during test.PNG
     
    Last edited: Jul 11, 2014
  19. mantra

    mantra Registered Member

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    thanks!
    i don't use rapid mode , but your score are impressive
    may i ask you what program is it in your system tray? i mean the blue icon with the S

    do you think Elphamsoft ssdtweaker is worth to try/buy?
    thanks a lot!
     
  20. Rules

    Rules Registered Member

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    The S is SpyShelter firewall.

    Good question, answer :

    I have actually it insalled (pro version) why :
    Because the tweaking options are the best and right for me.
    Because i disagree with tweaking options in the magician software (not all), but for example the indexing service, sleep mode, virtual memory are in the performance module Tab of the soft, sorry i just don't understand and laugh:).

    In fact i just use the Magician for Rapidmode, optimization and firmware update, i will never set other options.

    I forgot to say that my system run under UEFI mode.
     
  21. focus

    focus Registered Member

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    @Rules I like the look of the Elphamsoft software, I'm going to try it. Thanks.

    @mantra Why don't you use Rapid mode?
     
  22. mantra

    mantra Registered Member

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    @focus

    because my friend lost data with rapid ON with a samsung evo 500gb , twice
    lucky him ,i had a backup
    i would like to try in raid , i can get the same speed , i guess
     
  23. Rules

    Rules Registered Member

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    @mantra

    Normaly if you are used two identical samsung ssd evo in Raid 0, i think you will reach about 1000-1200 Mo/S in write read mode, but this Raid 0 is also risky for your data, and i agree that the RapidMode is not safe too.

    Rules.
     
  24. mantra

    mantra Registered Member

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    hi
    i had a confirm , the optimaze drive in 4.4 is buggy
    it doesn't work properly

    i was suspicious , it keeps seconds , 2 seconds
     
  25. prius04

    prius04 Registered Member

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    I don't know, mantra. How do you know that it doesn't work properly? By the time it takes to perform, alone?

    I upgraded from 4.3 to 4.4 and have only noticed a marginal difference and that's on two machines. Regardless, 4.4 doesn't appear to take any less time than does the built-in optimization utility in Windows 8.1, when I use the latter on my machines.
     
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