I installed 6gb ram but it shows only 3GB

[qnoorzad]

i installed 6 GB RAm but it showes only 3.18GB usalbe in win 7 pro 32 bit could you help me to use all RAM inseat only portion

 

[manu 11]

This is because you are using a 32 bit operating system,a 32 bit os can only detect upto 3.2 gb.
Install a 64 bit os and your 6 gb ram will be displayed.