Get disk yesterday, within 15 minutes she was installed incl. PC up and screw. my Samsung 120 Evo 840 was too small, so this 256er SanDisk. Since I have switched on this occasion from 32 to 64bit Win7 I once made the installation from scratch and the personal data saved back from a backup. The read rate moves at about 380 MB / sec, the write rate is slightly higher at about 425 MB / s I am satisfied, we'll see how long do the part Important is that one operates SSD drives in AHCI mode. This must be set in the BIOS before installing the operating system. Supposedly you can switch the still in retrospect, but that I have no practical experience