The ADATA Ultimate SU750 1TB SSD Review: Realtek Does Storage, Part 1

AnandTech Storage Bench - Heavy

Our Heavy storage benchmark is proportionally more write-heavy than The Destroyer, but much shorter overall. The total writes in the Heavy test aren't enough to fill the drive, so performance never drops down to steady state. This test is far more representative of a power user's day to day usage, and is heavily influenced by the drive's peak performance. The Heavy workload test details can be found here. This test is run twice, once on a freshly erased drive and once after filling the drive with sequential writes.

The empty-drive performance of the ADATA Ultimate SU750 on the Heavy test approaches that of the mainstream SATA SSDs, but when the test is run on a full drive its performance drops down to be on par with the other entry-level drives: the Toshiba TR200 DRAMless TLC SSD, and the Samsung 860 QVO with QLC NAND.

The average and 99th percentile latency scores repeat the same story: the SU750 handles the Heavy test well when run on an empty drive, but when full it struggles like other entry-level drives.

The average write latency for the SU750 on the Heavy test shows a much larger full-drive performance penalty than the average read latency scores, but in either case it comes out well ahead of the other two entry-level SATA drives.

The 99th percentile read and write latencies from the SU750 are both competitive with mainstream SATA drives when the test is run on a full drive. When full, the 99th percentile read latency on the SU750 takes a hit that makes it slightly slower than the Toshiba TR200. For writes, the SU750's QoS is hurt quite a bit more, but the TR200 shows just how bad things could have been.

Power consumption is again pretty high for the SU750, especially for the full-drive test run. The two NVMe drives somewhat obscure the big gap that separates the SU750 and 860 QVO from the rest of the SATA SSDs.