Win7 memory usage is high how to do?

Everyone help, I bought a new computer, memory usage rate is very high!! A boot on the 50%, so that the computer use is very card, now opened QQ and a few pages, to 80%, how to do ah, my W764 bit system, 2G memory, please ... This is just part of the manager screenshot

Windows7 system itself is much higher than the original XP system, adding a lot of system functions, these system functions are to occupy a lot of system memory, so the use of WINDOWS7 system 2GB memory is certainly not enough, if it is Windows7 advanced version, such as the flagship version, This version will have more features, a single aero peek function can occupy a long memory of 10 megabytes of space, many system services are powered on the memory has been occupied.

If the pointer does not reach 100%, and basically you usually open the program is so many cases, 80% problem is not really small, but if you are running a large program, or you want to play a large 3D game, 2G certainly not enough, it is recommended to upgrade to 64-bit system using 4G or greater memory better.

The following picture is the use of 64-bit genuine system, upgraded 6GB memory situation, very ideal, even if many programs are basically suspended state, memory is still sufficient, do not need to calculate the memory running program.