64 bit. If it were a 32 bit, you would max at a little less than 4gb RAM.
Because you are running on a 32 bit operating system. If you upgrade to Windows 7 x64 you will be able to utilize the full 8GB.
32 bit OS support max 2^32 bit = 4GB RAM
Not really. 32-bit Vs. 64 bit is more of a ram limitation more than anything. With 32 bit, your limited to 3 gigs of ram, with 64 bit, you can use an indefinite amount of ram. I have seen 64 bit servers capable of 52 gigs of ram.
32 bit only
Approximately 3GB of RAM is the most that Windows XP 32 bit will recognize. ^^^^^^^^^^^^^^^^^^^^^ Right but wrong.... 4Gb of RAM is the maximum amount that can be addressed by a 32 bit operating system
A 32-bit processor has ans(a) (a) 32 registers (b) 32 I/O devices (c) 32 Mb of RAM
a 32-bit OS is limited to 4 Gigabytes of ram
MPMemory
MPMemory
For the 32-bit Windows 7 operating system, the RAM (random access memory) limit is set at 4GB. The 64-bit OS, however, has more flexibility in terms of RAM capacity.
64 Bit is stronger and more stable then 32 bit. It is good if you want to play games, edit movies or do huge things that require more RAM. Speaking of RAM you can allocate more RAM for your uses in an application. While 32 bit computers have a set limit amount.
You have to buy a processor that fits that motherboard. Look in to dell they may have upgrades for it.