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.
For many users the read latency is even more important than the sequential performance. This is what makes your computer feel fast when opening new programs and bouncing around different windows. Firmware 5.0.4 has very good read latency so you get very good read access times.
LSI SandForce's SF-2281 controller doesn't use a DRAM buffer so the write access times are a little higher than those from Marvel based drives. The result is a little higher latency, but you don't have to worry about a losing your data when a power failure occurs. Some of the newer SSDs have up to a 1GB DRAM buffer, that is a lot of data to have in DRAM should a failure occur.
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