4gb of RAM with XP

2Gb max with 32bit XP, you can get it to 4Gb by a hack but that was only intended for development purposes thus is a lot slower.

XP64 can address 4Gb as can Vista
 
MeatLoaf said:
Yes thats correct :)

Well I think it will recognise it ie show you have 4gb in windows but will only use 2Gb. Little while since I last tried it though so happy to accept I may be recalling this wrong. As far as I remember 3gb would be used pre SP2 but SP2 seemed to reduce it back to 2gb.
 
Pitspawn said:
2Gb max with 32bit XP, you can get it to 4Gb by a hack but that was only intended for development purposes thus is a lot slower.

XP64 can address 4Gb as can Vista

so vista 32bit can use 4gb?
 
FrK` said:
so vista 32bit can use 4gb?

No. Vista 32 bit is still a 32-bit OS and it can only address 4Gb total so if your graphics card is a 768Mb monster that's 768Mb of your RAM addressing gone.

However, you should be running Vista 64 unless you have a legacy processor eg. a non 64-bit AMD Athlon XP or a Pentium 4 5-series that doesn't end in 1 ie. P4 520 = 2.8GHz P4, P4 521 = 2.8GHz P4 with 64-bit extensions. All 6xx, 8xx and 9xx P4's support 64-bit, as do all core2 processors.

Why would you want a 32-bit operating system? And Vista 64 can address 16Gb of RAM. That's plenty at the moment.

Windows XP can actually only address 4Gb RAM in total, but of that only 2GB is available for applications so you may as well stick with 2Gb.
 
At the moment I'm running Windows XP 32-bit with 4GB RAM (4x 1GB Geil) installed with a 1GB GFX (7950GX2) and Windows sees approx 2.6GB

Intending to go to Vista 64bit though as its a real waste to have that RAM and a 6600.
 
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