Random and Sequential Read/Write Speed
We benchmark the speed of random and sequential reading and writing with CrystalDiskMark 3.0.1. This benchmark is handy as it can measure the speed of an SSD with both random incompressible and predefined compressible data. So, there are two numbers in the diagrams that reflect the maximum and minimum speed. The real-life performance of an SSD is going to be in between those two numbers depending on how effectively the SF-2281 controller can compress the data.
The performance tests in this section refer to SSDs in their “fresh” out-of-the-box state. No degradation could have taken place yet.
The 120GB SSD is considerably slower than its 240GB cousin but the RAID0 array built out of two 120GB SSDs beats the latter. As we see, RAID0 technology helps boost performance in linear operations and during processing of small data chunks at a long queue depth. On the other hand, the RAID0 is somewhat slower than the 240GB SSD at processing random-address 4KB data blocks.