Hi! Due to an emergency a while back I had to use my 2 TB WD Green as my main drive, and with the SSD becoming more affordable lately I am thinking of using it for storage (as it was intended) and get an SSD for my OS's. I have very limited experience with SSDs so I need some advice. My use case: I will put Windows 7 and Ubuntu on separate partitions and dual boot. Windows is mainly for gaming, while Ubuntu is for everything else (can be quite CPU and RAM intensive, but not GPU intensive). I estimate Win7SP1 with patches and some programs etc is about 60 GB and Ubuntu is 11 GB. These I would like to have on one SSD, possibly two separate ones. I usually make a "User" partition for Windows and a "home" partition for Ubuntu that has a rather variable size. For example, at this computer I have 32 GB in my home. If the OS goes pear shaped I can still access my personal files this way. Ideally these partitions could be on SSDs too, but I am not sure if that is strictly necessary. Things like Steam folder etc are quite large, so I would probably keep them on the slow HDD or move just one or two games I actually play to the SSD. My questions: I hear that SSDs need quite a lot of free space to perform well, so while I could squeeze in both OS's on a 128 GB in principle I think 180 or 240 GB are probably better suited for that. But is it a good idea to partition an SSD at all to begin with? Does it matter that the SSD will be formatted for different filesystems (NTFS,ext4 or similar)? What size would you go for in a best-value-scenario, and how would you partition the SSD?