AIDA64 Random Access Time
Version and / or Patch Used: 1.60
Developer Homepage: http://www.aida64.com
Product Homepage: http://www.aida64.com
AIDA64 offers several different benchmarks for testing and optimizing your system or network. The Random Access test is one of very few if not only that will measure hard drives random access times in hundredths of milliseconds as oppose to tens of milliseconds.
Drives with only one or two tests displayed in the write test mean that they have failed the test and their Maximum and possibly their Average Scores were very high after the cache fills. This usually happens only with controllers manufactured by JMicron and Toshiba.
Manufacturers like to talk about their big number sequential performance, but the most noticeable performance increase over a spinner is how fast actions happen. Read latency is the measurement used to quantify these actions. The Silicon Power Slim S70 produced a .15ms average that spanned the entire length of the drive.
SandForce doesn't use a DRAM buffer to artificially reduce write latency. The Silicon Power S70 produced .18ms latency when writing 64KB blocks to the drive.