256GB or 2x128GB

I've been waiting for a particular 256GB SSD to go on sale and just found the 128GB version on sale for less than half the price of the 256GB SSD. I'm torn between buying 2 x 128GB or continuing to wait for the 256GB. Is there a down side to the 2 x 128GB configuration that might help me decide?
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More about 256gb 2x128gb
  1. Trim won't work on an SSD raid set. That is generally enough to keep people from bothering with it. (I was assuming you would run the 2x128's in a raid0)
  2. The choice is yours. I don't think it would make a difference unless you were thinking of configuring two identical ssd's in a RAID0 array to run some sort of special software application.
  3. I'm still using XP Pro so I'm not even considering a RAID.
  4. what ssd are you looking at? I don't think having two smaller ones would be a negative, I personally prefer two 500 gb regular hdd than 1 large one.
  5. thesnappyfingers said:
    what ssd are you looking at? I don't think having two smaller ones would be a negative, I personally prefer two 500 gb regular hdd than 1 large one.



    I personally prefer two 500 gb regular hdd than 1 large one. Why??
  6. Add - you loose trim With XP so must rely on CG.
    My choice in SATA III is Has been the Marvel based drives (ie Intel 510 and curcial M4), However the M4's do not have "great" garbage collection (CG)
    May change to the Samsung 800 series as it has just come out, there 470 was an outstsanding Sata II drive.

    Added: Generally a 256 gig SSD will have slightly better performance than a 128 gig (Same make/model). Enough to make a real differnce, dought it - Maybe benchmarks but not in the day-to-day real life.
  7. ram1009 said:
    I personally prefer two 500 gb regular hdd than 1 large one. Why??


    I don't know, perhaps it is becuase it takes me forever to fill up 1 tb, so that is just the format that i have always used,

    for example my laptop has a 320 gb hdd, and i have filled it up so i bought a 500 gb, and have barely touched its capacity.

    Maybe, 1 larger drives are the way to go, just have not had any problems using two smaller ones.
  8. RetiredChief said:
    Add you loose trim With XP so must rely on CG.
    My choice in SATA III is Has been the Marvel based drives (ie Intel 510 and curcial M4), However the M4's do not have "great" garbage collection (CG)
    May change to the Samsung 800 series as it has just come out, there 470 was an outstsanding Sata II drive.

    Added: Generally a 256 gig SSD will have slightly better performance an a 128 gig (Same make/model). Enough to make a real differnce, dought it - Maybe benchmarks but not in the day-to-day real life.



    What's "CG"?
  9. CG = Garbage Collection. It is need as Not all drives are used under windows 7.
    For windows 7 it works in conjuction with trim to maintain near factory performance as files are deleted.

    With Win XP and Vista there is no Trim command, so the performance would degrade over time. to counteract this manuf put what is called CG so that the performance is maintained over time - problem is it's performance varies widely with manuf. The M4 only does it's CG when idle, if I remember correctly.
  10. RetiredChief said:
    CG = Garbage Collection. It is need as Not all drives are used under windows 7.
    For windows 7 it works in conjuction with trim to maintain near factory performance as files are deleted.

    With Win XP and Vista there is no Trim command, so the performance would degrade over time. to counteract this manuf put what is called CG so that the performance is maintained over time - problem is it's performance varies widely with manuf. The M4 only does it's CG when idle, if I remember correctly.



    If CG = Garbage Collection what does GC =? :D
  11. CG should have been GC, I corrected it.
  12. I personally would prefer the speed of Raid 0, but this is first I heard that it does not support Trim. What benefit are there for using Trim?
  13. Who needs raid on SSDs unless you want 1TB? (if you can afford it). Come on guys, SSDs are already super quick. And like everybody said, you can't use trim in raid (whatever it is - I'm a n00b).
  14. RetiredChief said:



    I wasn't aware of the importance of TRIM or that XP doesn't support it. I don't intend to upgrade my OS until W8 so I'm wondering if I should delay adoption of an SSD until then.
  15. SSDs do have Garbage collection which augments Trim. Manuf know that win 7 is not 100%, there are still XP and vista machines.

    Myself, I'd have no heartburn using a SSD in a XP system knowing that I'd be upgrading to windows 8 within a year.
  16. Chief you have THG private message.
  17. Noted, thanks
    Good JOB!!!!
    I need to catch up on my reviews of the newer SSDs, Your site is an excellent place to start.
  18. WOW, thank you JohnnyLucky, I am glad I read this thread, that is a LOT of great info on SSD's...I am gathering all my parts for a build and have been trying to decide on an SSD. Thanks for taking the time to put this together.
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