the first time, everything went perfectly. Then the start was on the operating system Win 7 64 bit more slowly. Despite all the updates, all necessary configurations with an SSD, Samsung announced the software everything super, the truth looks differently! Finally, it came to system crashes, the PC turns out, then the PC would not boot up. After installing my old WD hard drive running again everything great and faster than the Samsung SSD. Now I've googled this SSD and behold: Look at yourself after. I'm not alone! Everything I've suspected, the graphics card, the board, the processor, even the power supply. The Samsung software always reported yes, everything was perfect. My conclusion: Do not buy! The successor should be better, but this has me Samsung too much money pulled out of his pocket to buy it again.