![Why Windows Vista only sees 3GB memory in a PC with 4GB RAM and how Vista SP1 fools its users – 4sysops Why Windows Vista only sees 3GB memory in a PC with 4GB RAM and how Vista SP1 fools its users – 4sysops](https://4sysops.com/wp-content/uploads/2008/04/4gb.png)
Why Windows Vista only sees 3GB memory in a PC with 4GB RAM and how Vista SP1 fools its users – 4sysops
![memory - Why is my computer windows Vista is running very slow despite CPU/ RAM usage at not 100%? - Super User memory - Why is my computer windows Vista is running very slow despite CPU/ RAM usage at not 100%? - Super User](https://i.stack.imgur.com/uO9JN.jpg)
memory - Why is my computer windows Vista is running very slow despite CPU/ RAM usage at not 100%? - Super User
What will happen if we use more than 4GB of memory in a 32-bit system? Will the system be able to use more than 4GB? Under what conditions can a system have
![Why Windows Vista only sees 3GB memory in a PC with 4GB RAM and how Vista SP1 fools its users – 4sysops Why Windows Vista only sees 3GB memory in a PC with 4GB RAM and how Vista SP1 fools its users – 4sysops](https://4sysops.com/wp-content/uploads/2008/04/3gb-msinfo32.png)