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    Power Cycle SSD in Laptop for longer battery life?

    Discussion in 'Hardware Components and Aftermarket Upgrades' started by HTWingNut, Nov 14, 2010.

  1. HTWingNut

    HTWingNut Potato

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    I have a few questions regarding power cycling an SSD:

    Is it bad to constantly power cycle an SSD?
    How many power cycles can it endure?
    How long does it take for an SSD to "power on"?

    Basically asking because I know SSD's are already much better than HDD's regarding power consumption but if you can have it turn off after 1 minute of idle and power back on when in use then you could get even longer battery life. But is this good for the SSD and would there ever be a noticeable pause as the SSD turns on? I know on a hard drive the platters have to get to speed, and I'm assuming even an SSD runs through a brief firmware check before being utilized.

    Ideas, thoughts?
     
  2. tilleroftheearth

    tilleroftheearth Wisdom listens quietly...

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    Just a guess?

    SSD's do not care about power cycles at all - only writes and possible reads (if reads are in the millions...).

    As to how long it take to power on - since all my mechanical drives power on fast enough for me (I have them set to 1 minute power off on idle), I think it is safe to say that SSD's power on time will be negligible (at least to me).

    This is an interesting question though - hope we get some good/real/concrete info.
     
  3. MAA83

    MAA83 Notebook Evangelist

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    I've always wondered weather the power option of "stop hard disk rotation" actually saves any power or does anything when you have an SSD installed.
     
  4. CowboyCoder

    CowboyCoder Notebook Evangelist

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    Agreed. SSD is more like RAM than a mechanical disk. An SSD also uses much less power than HHD even when working flat out.
     
  5. Tsunade_Hime

    Tsunade_Hime such bacon. wow

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    Well also certain Toshibas have that feature where it will move the HDD read head to safe position if it detects the chassis is moving, but does that affect an SSD? Or does it know there's an SSD and doesn't do anything?
     
  6. Judicator

    Judicator Judged and found wanting.

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    It probably wouldn't matter, as all that really consists of would be the hardware sending a signal to the HDD to park it's heads (unless the accelerometer is part of the HDD itself, like some of the HDDs with self-contained free-fall sensors), and unless the SSD has coopted that signal for something else (unlikely, I'd think), it would just come up as an unrecognized command to the SSD, and nothing would happen.
     
  7. Meaker@Sager

    Meaker@Sager Company Representative

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    The status of a cell can be checked without damaging the substrate so even lots of reads should be no problem.
     
  8. Tinderbox (UK)

    Tinderbox (UK) BAKED BEAN KING

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  9. Tsunade_Hime

    Tsunade_Hime such bacon. wow

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    [​IMG]

    I've had my OCZ Vertex 30 GB drive now for like...3 months. Is this good it's already down to 97% health?
     
  10. namaiki

    namaiki "basically rocks" Super Moderator

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    Is this the part where I start to feel a bit worried?

    [​IMG]
     
  11. HTWingNut

    HTWingNut Potato

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    Not when you have a Kingston V-series SSD. It sucks power. Kingston V+ is really good, but I found out the hard way that V-series really consumes a lot of power, almost as much as an HDD, if not more, when idle.

    Either way, I realize now that I have my Intel 80GB in there, it sips power, 0.06W idle, compared with 1.36W idle for the Kingston V. A laptop scorpio black only uses 0.85W when idle. :eek:
     
  12. HTWingNut

    HTWingNut Potato

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    Seems this program uses the same SMART attributes as CrystalDiskInfo and few drives actually report the same way. There was a discussion here somewhere about that, and generic reporting software is generally inaccurate. Best to use a program from the manufacturer if it exists.
     
  13. tuηay

    tuηay o TuNaY o

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    This is my ThinkPad, which I use at school and for other kind of stuff I don't want to do with my Qosmio. I keep my Qosmio more 'clean', the OS and all. But, I now really wonder what the uptime for my SSD in Qosmio is...

    [​IMG]
     
  14. HTWingNut

    HTWingNut Potato

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    In your case your writes are 40x times the capacity of the drive, so that would make more sense. But even then with MLC NAND having 10,000 write life, 40 writes is less than 0.5% of total writes. Although I do hear Sanforce drives use cheaper chips, but even if it's half (5,000 writes) it's still less than 1% of its useful life.

    I just wouldn't put any faith in these utilities. Out of curiosity, run CrystalDiskInfo and see what it reports.
     
  15. tuηay

    tuηay o TuNaY o

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    Ah, I understand. I'll however check how many hours my SSD in Qosmio has been en for.

    BTW. do you want me to put up CrystalDiskInfo results for my drive here? I can do that if it will help for anyone.. :)
     
  16. HTWingNut

    HTWingNut Potato

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    Hours aren't critical, but writes are. I'm also suprised you're not seeing significantly diminshed performance as full as your drive is.

    If you wouldn't mind posting the CrystalDiskInfo I'd be interested, thanks.
     
  17. Tinderbox (UK)

    Tinderbox (UK) BAKED BEAN KING

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    My SSD showed 97% health in SDDLlife and CrystalDiskInfo , but after flashing to the latest firmware , it`s now showing 100% health and an estimated 10 year lifespan :)
     
  18. tuηay

    tuηay o TuNaY o

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    Actually, I'm not seen any decrease in performance. And yes, my SSD is quite full loaded.

    However, here is a Screenshot of CrystalDiskInfo :)
    [​IMG]

    Also, don't forget that this is not my Qosmio.

    This is my Thinkpad T61. T7250 @ 2.00 Ghz, 4GB RAM, nVidia Quadro NVS 140M

    However, here is some other benchmarks from my Qosmio. Including some SSD testing:
    http://forum.notebookreview.com/6849924-post3067.html
     
  19. HTWingNut

    HTWingNut Potato

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    See about a firmware flash like Tinderbox UK indicated. Although I think its a destructive flash so you would have to image or reinstall your data. Imaging is a mixed bag because if it gets out of alignment then it definitely would cause performance issues.
     
  20. Tsunade_Hime

    Tsunade_Hime such bacon. wow

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    Holy crap your 256 GB SSD is nearly full....lol

    I thought SSD performance gets worse then it gets towards being full..
     
  21. Leopard2

    Leopard2 Notebook Consultant

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    lol no programs work with crucial C300 SSD's.. i can't measure health at all... is there some program which works?