Maybe on Windows. I use Xubuntu and it lets me with a little more than 1700MB for me to use with I want. And that's if I let the window manager running. If I disable it, I will have 1800MB out of 2000MB to spend with real applications and productivity! And that's because if I have 1900MB available out of 2000MB the kernel seems to allow only "free memory -100MB"(approximately) to be used by programs. Not sure.