These speeds are much faster than the average SATA II SSD. Aiding in this performance speed is the M2 Series' 128MB DDR3 cache buffer. To help ensure a performance that is consistent, these SSDs are designed with a Dynamic Wear Leveling algorithm that helps to cut down on performance loss. The Windows 7 TRIM command support allows these SSDs to manage memories efficiently, which also helps to combat performance loss. To back up these claims of continual high performance, the Plextor M2 Series of SSDs have a three year warranty.