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Thread: SSD Write Endurance 25nm Vs 34nm

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  1. #10
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    Mar 2011
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    Quote Originally Posted by Ao1 View Post
    SF drives cannot sustain performance levels without burning up the NAND, despite the compression advantage, hence the drives are life time throttled. LOL.. you've been swallowing the propoganda that Tony has been feeding over at OCZ fourms haven't you? Hook.. line.. and sinker. Do you actually seriously believe that compression provides absolutley no additional lifespan increases?

    Intel drives provide consistent write speeds throughout the life of the product and regardless of xfer size. SF drives can't do this. Then you obviously haven't tried a secure erase to wipe Durwrite's mapping requirement to keep it actively implemented.

    Yes you might get short term performance boosts before throttling kicks in, but once it has kicked in you are stuffed. Takes me all of 10 minutes(no bull) to SE/reimage all 6 of my drives and be back to "un-stuffed" full speed states. They should call it "map-life throttle".. NOT.. "life-time throttle" since an SE wipes the map quite easily and therefore eliminates any throttling altogether until the map is fully reformed when all space has been written at least once. This is where capacity is worth it's weight in gold for a Sandforce controlled drive.
    Another thing to consider is the lack of throttling and ability of the newer SF2281 controllers to lift throttles MUCH more quickly than the first gen 1xxx series controller. If the above assumptions are true than they just killed the lifespan of these drives by cutting back on the throttling on these new controllers. Then it also begs the question of how/why would they do that(adjust throttling) especially considering they just cut PE/c from the original 34nm/5000k to 25nm/3000k on the new drives?

    I've said it many times already.. they simply used the "lifetime throttle to promote lifespan" crap for a smokescreen as to hide the weakness/limitation of the original recycling engines performance on the first gen SF controllers. I also said that if SF could have made the drive avoid/limit throttles on the first gens?.. many mfgrs would have jockeyed for sales dominance by making custom firmware adjustments to one-up the other guys(even possibly reducing warranties on specialized EXTREME models to do it). Never happened because that's all the drive could effectively maintain once it was completely dirty and doing things on the fly(read-write-modify). Recycling engine was too small to make it sustainable, is all. New recycling engine is larger and much improved(TRIM marked blocks are also more effectively/immediately used I suspect) which is why throttling is able to be modified nowadays.

    So,.. the new one's throttling was adjusted... because?.. it could be. Simple as that.

    Have to read through all the advertising and bulls*it to really piece these things together sometimes. Lifetime throttles are just a big smokescreen to lead those away from the limitations of the first gen drives and it surely worked on most people who asked the question. I also HIGHLY doubt that "too many SE's/Durawrite map bypassing" will kill these drives prematurley as well. Not that I beleive smart data on these drives any further than I can throw it.. but mine actually appear to be in better shape than most of the "just use it throttled" users out there. With 5TB written to EACH 1 of my 6 drives?.. they are not even showing any reallocation counts yet. But with more than 100 SE's on each of my drives now.. who knows?.. maybe I'll trash the charge pumps on my drives and eventually be unable to SE anymore. Hardly think it will matter by that point though as I will have upgraded 2 times over by then and they will be overpriced USB storage solutions or sitting in the kids game machine/netbook. Time will tell the true story.

    After all that.. I just want to say that I really appreciate these guys "taking one for the team" by doing this write endurance testing. Much appreciated and you can't be thanked enough for doing it. Anxious to see how far beyond rated PE/c we can go here. Even makes me wonder if you guys can sustain the time and willpower to stay on course if they continue on for too long after 0% lifespans are hit. Will the counters just reset again? Again with the.. "screw SMART and only time will tell". lol
    Last edited by groberts101; 06-23-2011 at 07:26 AM.

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