4GB RAM issue with 32 bit Operating Systems
4GB RAM issue with 32 bit Operating Systems I recently upgraded my old desktop and came across with this interesting issue. This would be useful for many of us since most of us are still using 32 bit operating systems. Just take this article as an early warning. Upgrade configuration: Intel Core 2 Duo 2.66GHz, 1066FSB, 3MB L2, E7300 (arround Rs. 14,000/=) 2GB x 2 RAM (Dual Channel, 800MHz) (arround Rs. 3800/= x 2) Intel DG31PR Motherboard (arround Rs. 7500/=) This issue I had was having 4GB of memory. Well, Ive reached the maximum addressable memory limit of 32 bit systems, right? So I should be able to use all 4GB as memory. But unfortunately, that was not the case. All I have is 3.2GB of memory on 32 bit Windows XP and 32 bit Ubuntu 8.10. So where did my memory go? Theoretically, the 32 bit systems are limited to 4GB of addressable memory. The problem is you cant allocate all those 4GB address space to RAM alone. Many other devices connected to the mother board (including the memor...