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win 7 32bit (say 2.5gb avaible on 4.0gb

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Grosjambon

Member
Joined
Oct 10, 2009
Location
Montreal - Canada Or @Cegep Maisoneuve
Hi!
I have win 7 32bit (LEGAL),its says 4.0gb but only 2.5 gb available!

Man, 2.5gb is not enough for me. I max it out playing hon + some web open + music on....

Some site say to enable HT / SW memory hole mapping I have enable HT (Bios doesnt show SW)

Still show 2.5gb not 4.0gb

In bios I see 4.00gb, 3.5gb Available!
 
Yea but, this doesnt explain why under 32bit it was only 2.5 on 4gb...

this explains it a lot better then I can
http://www.tomshardware.com/forum/285279-30-maximum

but long and short, your ram on a 32 bit OS can only be maxed at 4gb or less. each byte of ram needs a adressing point (or name) the 32bit os can only read that maximum of 4gb worth of addresses and other parts of your pc such as:
- System BIOS (including motherboard, add-on cards, etc..)
- Motherboards resources
- Memory mapped I/O
- Configuration for AGP/PCI-Ex/PCI
- Other memory allocations for PCI devices
all use adressing as well


odds are the 32 bit os could only read the 3gb of ram since the other available 1gb was addressing the other parts of your system. which brings us down to 3gb total and your onboard is eating the other .5gb
 
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