I have installed 4GB RAM in my PC but it shows only 3.49 GB. How can I get a full 4GB RAM.Any Procedure? - Quora
How To Know Your System's Maximum RAM Usage And The Issue Of Windows XP Not Recognizing Full RAM Capacity | Megaleecher.Net
![RAM Recognition: 2008 Optiplex recognizes 3.25gb RAM with 4gb DDR2 installed, cool. Hope was 6gb DDR3 would be read as 4gb in a 2011 Lenovo Thinkcentre with x2 3gb DDR3 sicks, but RAM Recognition: 2008 Optiplex recognizes 3.25gb RAM with 4gb DDR2 installed, cool. Hope was 6gb DDR3 would be read as 4gb in a 2011 Lenovo Thinkcentre with x2 3gb DDR3 sicks, but](https://preview.redd.it/hq59ipfv7oq61.jpg?width=640&crop=smart&auto=webp&s=b1b0c42a04ab78782b6c881b1cd32bedef103ea5)
RAM Recognition: 2008 Optiplex recognizes 3.25gb RAM with 4gb DDR2 installed, cool. Hope was 6gb DDR3 would be read as 4gb in a 2011 Lenovo Thinkcentre with x2 3gb DDR3 sicks, but
![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.png)