ADATA Premier SP550 120GB, 240GB and 480GB SSD Review


IOMeter Mixed Performance

Our mixed performance test is conducted in the same manner as our sequential tests, but once the drive is conditioned we run our test profile to look at performance in various read/write states. We start the test with 100% reads and then add write data into the mix in 10% increments until we end up with no reads at all in the workload.


The ADATA SP550 drives start out great in our 128KB sequential mixed workload test with 100% reads, but the performance drops off as writes are added and performance never comes back due to the the SLC cache filling up. The TLC drives have this performance characteristic, but the ADATA SP550 drives are certainly on the lower performing side.


When looking at 4KB Random mixed workload performance again found that performance tapers off as the number of writes increases, but the performance on the 240GB drive was respectable and in-line with other TLC drives.

Let’s take a look at temperatures!