Just days ago we published reviews for the Crucial M500 120GB and 240GB. Prior to that, we published the M500 960GB, Crucial's flagship offering. So far it's been a Dr. Jackal and Mr. Hide situation. The 960GB M500 is really good no matter what angle you look at it from.
On the other side of the capacity range, the 120GB and to a lesser extent, the 240GB have issues with sustained write speed and write latency. Both the 120GB and the 240GB use one die per package NAND - 8 packages for the 120GB and 16 packages for the 240GB. Both of the smaller capacity sizes also share the same 128MB DRAM buffer as well.
Crucial claims the M500 480GB shares the same 500MB/s sequential read and 400MB/s sequential write performance with the 960GB. The claimed IOPS performance is the same as well - 80,000 4K IOPS for both read and write. The 480GB model uses three-die per package and increases the DRAM buffer size to 512MB. This isn't the 1GB buffer found on the 960GB model or the 4-dies per package, but it could be good enough to get to competitive performance in the 512GB class category.
Today we're going to finish our coverage of the Crucial M500, at least until Crucial releases new firmware. We have a number of high capacity SSDs to compare the 480GB to and a number of benchmarks see where everything lands.
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