@ishu:then why release the new standard?theoretically it provides double bandwidth right?
Current HDDs aren't even fast enough to fully utilize the bandwidth of Sata2. You'll probably need a very fast SSD or maybe a SSD-RAID to get actually get that much speed.
__________________
i5 2500k 4.4GHz @ 1.25v | CM Hyper 212 Evo | HD 3000 @ 1.5GHz | Asus P8Z68-V Gen 3
2x4GB DDR3 1600MHz CL9 | 160GB 7200rpm + 160GB 5400rpm | W7 x64
CM690 II USB3 | Corsair TX750W V2 | APC 1.1KVa | Dell U2312HM + Sansui V8 19"
Razer DA Black + Razer Goliathus | XBox360 wired x2
Senns HD201 | PSP Slim 8GB MSPD | N5800XM 8GB MSD | Speedtest
Oh,so its the interface thats faster;not the hard drives that are compatible with it.
You got it. Similar situations exist with other things too. For example, using a printer or a thumb drive through USB 3, a broadband modem via Gigabit LAN, a CD/DVD drive on SATA, etc. In all these cases, the devices don't even come close to pushing data at the maximum speed of the interface.