![]() ![]() ![]() You can imagine a queue as an individual worker filing documents away, and obviously, more workers mean faster filing. By default, CrystalDiskMark tests at queue depths of 1, 8, and 32, though you can manually increase the queue depth and test that way if you wish. Queue depth refers to how many queues are handling I/O requests at any given time, and with more queues open to transfer data, there's a greater potential for faster transfer speeds. Depending on other factors, the performance difference between sequential and random can range from minor to extremely large. Random workloads involve data that isn't sequential or contiguous and may be spread all over the drive. In a sequential workload, the data the SSD is accessing is physically contiguous and can be accessed one after the other in a sequence (hence sequential). The main difference between these two kinds of workloads is how the data is organized. The two basic types of tests CrystalDiskMark uses are sequential and random, denoted by SEQ and RND respectively. random, block size, queue depth, and threads. CrystalDiskMark benchmarks come down to the four important testing parameters: sequential vs. Leaving it at the default of 1GB is completely fine, as it's a realistic size for a lot of data that you may access on your storage.ĬrystalDiskMark comes with four preset benchmarks, but if you look in the advanced settings, you can actually customize what the benchmark tests for and get different results. ![]() This is the file size that CrystalDiskMark creates to perform read and write tests on, and it ranges from 16MB to 64GB. Before running your tests, you'll need to set a working file size. ![]()
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