RAM & WinXP Question?

[htcs]

Ok, so i'm in a bit of a questionable argument with a fellow worker about ...

What is the maxiumum amount of RAM that Windows XP (not the 64-bit version) can handle?

Is it:
A) 2 GB
B) 4 GB

We have a PC that has 3GB of RAM installed - it boots and works fine. Windows reports 3GB of RAM as well. However, i'm being told that the last 1 GB block will not be used... so the extra GB of RAM is pointless.

Also, what are the max amounts of ram for the 64-bit version of WinXP? Does it have anything to do with the CPU as well?

Thanks in advance.

 

[SHAWN]

XP Professional supports 4GB of RAM
XP X-64bit supports 128GB

The CPU has to be 64bit to support 128GB. 32bit Supports 4GB.

 

[htcs]

perfect... thanks

 

[JohnnyX]

Does XP Home have a RAM limit of 4gb also ?

 

[Law]

All 32bit CPU can address up to 4GB of memory.

1111 1111 1111 1111 1111 1111 1111 1111 = 4,294,967,296 (4GB)

Windows XP Home and Pro can reach 4GB.