回复：Help about adding RAM

When I added both A-DATA 4GB RAM and CORSAIR 2GB RAM to my Lenovo computer's original 1GB RAM, computer only shows 3.25 GB of RAM Physical Address Extension. Does that mean computer recognized the additional 6 GB of RAM? But I had thought my compputer supports up to 8GB RAM, it should show 8GB of RAM. When I removed the A-DATA 4GB RAM and keep CORSAIR 2GB RAM with the original 1GB RAM, computer shows 3.0 GB of RAM, but didnt show Physical Address Extension. When I removed the CORSAIR 2GB RAM and kept the A-DATA 4GB RAM with original 1 GB RAM of Lenovo, computer shows 3.25 GB of RAM Physical Address Extension. So does that mean my A-DATA 4GB RAM only functioned as 0.25 GB of RAM?

Please help me on this. THANK YOU VERY MUCH