HD Tach is a physical performance hard drive test that uses a special kernel mode VXD to get maximum accuracy by bypassing the file system.
When we look at average (not peak!) write performance we see 346 MB/sec in this test. In addition to sequential read performance, HD Tach tests the drive's random access time. Random access is the true measure of seek speed. Many drives advertise sub 10 millisecond seek speeds, but seek speeds are misleading. Also again, without a physical head that moves around, the SSDs are just so fast as they have no mechanical moving parts. Here obviously, the smaller the number is, the better. In this case, 0.1 ms.
The Burst speed measured in HD Tach was as well 372 MB/sec by the way.
ADATA S511 series 60GB SSD review ADATA added no less than four new SATA 3 (SATA 3 6Gs) SSDs in their S511 series lineup, in 60GB, 120GB, 240GB and even 480MB capacities, all SATA 3 of course. The SSD drives come with that already prominent SandForce SF-2281 controller to deliver up to 550 MBps read and 500 MBps write speeds (when peaking). We take a look at the 60GB model.
ADATA S599 100GB SSD review We test the ADATA S599 100GB SSD. ADATA release their S500 series of Solid State Disks which are armed with that all new SandForce SF1200 IC. Shocking performance you guys .. overwhelming even.