![]() ![]() Mostly these would be sequentially read applications. These are both pretty intensive applications, for both reading and writing. The '1M' and '128K' stand for 1MB and 128KB respectively, showing the sort of size files these tests use (although I don't know for sure if those are actually the sizes, I always just figured that was the case. The reason I say this, is because 'real life' work is often just not laid out in a sequential way, requiring the controller to find data/space all over the drive.ĬrystalDiskMark also has small and large file tests, because a controller may perform differently with many small requests, compared to fewer large requests. HDD's for example have 'okay' sequential performance, but really poor random performance, which generally makes them crappy as an OS/program drive. The memory on the drive may be fast in sequential reads/writes, but if the controller can't keep up with the random requests, it may still prove slow in day-to-day use. Random read/write is when data may be found on different parts of the disk, so the controller needs to be able to find these different parts to read/write efficiently and fast. Sequential is generally the simpler of the two, it's reading or writing data in a sequential pattern, one after the other. Writing: when you are creating/editing a file and making new data to be saved. Read: reading a file, which would include opening a file, opening a program, starting your OS, etc. The bottom four numbers represent random speeds, both in read and write. ![]() The top four numbers represent sequential speeds, both in read and write.
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