Total Access Time
The access time test measures the total latency across all 18 tests. This is one of, if not the most important test we run at this time for consumer SSDs. When your latency is low your computer feels fast, it's just that simple.
RAPID Mode gives up some throughput to deliver better overall user experience. This comes from lower latency. The chart clearly shows how RAPID decreases total latency time in the tests when compared to the 850 Pro 1TB as a standalone product. Under heavy use, the Extreme PRO 960GB has better latency and that carries over through all of the tests making it a more consistent performer.
Disk Busy Time
In the final test, we measure the amount of time the drive worked to read and write the data to complete the test. When a drive is active, it uses more power so the faster it can complete the tasks the faster it can fall into a low power state.
This is a very interesting chart with the RAPID Mode software running. We expected the 850 Pro running with the cache software to work less than the 850 Pro not running the software. That wasn't the case. The software actually makes the drive work longer since the data needs to flush to the drive after passing through DRAM.