Benchmarks and Performance Analysis
First in the benchmarks is sequential read/write performance. By now we are all aware that this isn’t a true reflection of user experience or total drive performance. That said, it is the easiest metric by which drive performance is measured and related to end users. Here we can see that the Legend 750 performs admirably, beating the CORSAIR MP510 Gen3x4 drive in both read and write speeds.
4K Random access performance is more indicative of performance and this shows that the MP510 is actually faster then the Legend 750. The workload you subject your storage to will determine what is the most important measurement of performance for your use case, but in system responsiveness the MP510 is likely to seem/feel faster.
The famed and AS SSD storage benchmark seems to agree with the IOPS performance measurements where the MP510 is faster than the Legend 750. This is across all tests and this is if anything one of the poorest showings for the Legend 750. That said, being slower than the MP510 doesn’t make it a slow drive, just not as fast. For most users again, this is adequately fast and the differences between these drives is likely academic more than it is a real world measurement of anything.
This older benchmark which was popular nearly a decade ago, disagrees with the AS SSD tests and presents the Legend 750 as the superior drive by some distance as well. One suspects this is due the score weighting, where sequential performance has a greater emphasis. This would explain why the ADATA drive appears to be the faster drive.