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A slowdown is to be expected with Solid State Disks; as smaller SSDs are slower then larger ones. Simply because larger ones have more NAND chips and are theref

A slowdown is to be expected with Solid State Disks; as smaller SSDs are slower then larger ones. Simply because larger ones have more NAND chips and are therefore able to write to more locations at once. https://superuser.com/questions/977080/does-a-large-ssd-perform-better-than-a-smaller-one https://superuser.com/questions/977080/does-a-large-ssd-perf...

tetraodonpuffer 10y ago
that explains the 25-30% slower read speed, it does not explain the nearly 10 times slower write speed, there must be something else going on
- onli 10y ago
  It explains write speed differences, see http://www.anandtech.com/show/8747/samsung-ssd-850-evo-review/8 http://www.anandtech.com/show/8747/samsung-ssd-850-evo-revie... for example, bigger drives support faster writes. Though 10 times slower speed should be more than what is explainable by that.
- RubenSandwich 10y ago
  You bring up a good point a 10x slowdown is quite dramatic. I have edited my original post to make it sound like less NAND chips in the SDD isn't the only issue.
  - deleted 10y ago
    [deleted]
- satysin 10y ago
  I would think it is just them buying cheaper 32GB drives from another manufacture. Just like different USB flash drives have varying performance depending on who makes them.
insightful 10y ago
That isn't a general rule at all, and it would be foolhardy to generally apply it. While there are cases where it may be true, in many other cases multiple chips sit behind a single controller and are accessed serially -- some easy examples are that the Intel 750 1.2GB has virtually identical performance to the 400GB. The Samsung Pro 950 256GB, 512GB, and 2TB all have virtually identical performance. And on smartphones, it is very, very seldom the case that flash storage varies in speed between capacities, beyond simply vendor differences. Which is probably the case here.

tetraodonpuffer 10y ago

that explains the 25-30% slower read speed, it does not explain the nearly 10 times slower write speed, there must be something else going on

onli 10y ago
It explains write speed differences, see http://www.anandtech.com/show/8747/samsung-ssd-850-evo-review/8 http://www.anandtech.com/show/8747/samsung-ssd-850-evo-revie... for example, bigger drives support faster writes. Though 10 times slower speed should be more than what is explainable by that.
RubenSandwich 10y ago
You bring up a good point a 10x slowdown is quite dramatic. I have edited my original post to make it sound like less NAND chips in the SDD isn't the only issue.
- deleted 10y ago
  [deleted]
satysin 10y ago
I would think it is just them buying cheaper 32GB drives from another manufacture. Just like different USB flash drives have varying performance depending on who makes them.

insightful 10y ago

That isn't a general rule at all, and it would be foolhardy to generally apply it. While there are cases where it may be true, in many other cases multiple chips sit behind a single controller and are accessed serially -- some easy examples are that the Intel 750 1.2GB has virtually identical performance to the 400GB. The Samsung Pro 950 256GB, 512GB, and 2TB all have virtually identical performance. And on smartphones, it is very, very seldom the case that flash storage varies in speed between capacities, beyond simply vendor differences. Which is probably the case here.