HD Tach will test the sequential read, random access and interface burst speeds of your attached storage device (hard drive, flash drive, removable drive, etc). All drive technologies such as SCSI, IDE/ATA, 1394, USB, SATA and RAID are supported. Test results from HD Tach can be used to confirm manufacturer specs, analyze your system for proper performance, and compare your performance with others. HD Tach is very easy to use, quick, and presents data in easy to read graphs, including the ability to compare two storage devices on screen at the same time for easy analysis.
For uncached SSD based storage, burst speeds will usually end up close to the maximum read speed.
The ioDrive wins the raw throughput race with 4 lanes of PCI-Express available.
SATA based SSD’s usually run at 0.1ms, while PCI-E based SSD’s usually run at 0.0ms.