if you're having a quad core cpu and 4gb and above ram then go for windows 10 x64
Windows 7,8,8.1 were good, I actually liked 8.1 much but then I installed windows 10 altum x64 and it's performance is surprising, I'll be honest, I bought amal's gpu, it didn't work, I am on integrated graphics, which are Intel HD, I can play cs go at 50-60fps, gta 5 at 20-30fps and vcmp at stable 60fps,even with recording on, I've faced fps dropping on windows 7,now I don't have that experience with windows 10 till now, so yes, your wish.