I had bought a used but modern laptop that had all the right specs for processor and memory, yet seemed to be a total snail, really slow to start Windows, apps, even changing web pages was pokey. Having had good experience swapping in Solid State drives (Crucial, Western Digital) I figured I would try a Samsung, having heard good things. Compared to what I started with, this drive just screams - I'm at the Windows logon screen within about 10 seconds, and at the desktop within 3... I'm SERIOUSLY impressed... So impressed than when I picked up another slug laptop, I bought another Samsung SSD and it made all the difference on this one as well... Previous boot times were close to 2 minutes, now around 12 seconds. I think for me it will be Samsung drives from now on.