SiPex

I have 4GB (1gbx4) of Ram installed on my computer, and vista is only recognizing 3.50Gb. What could cause this?

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Grafixs

You have a 32-bit operating system. It won't recognize more than 3.5 in Vista which basically means you paid for 4, but only get to utilize 3.5 of it. Sorry but you should've gotten the 64-bit system (same price) and you wouldn't have this problem.

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SiPex

I had lots of problems with the x64 version, and it eventually crashed.

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Armadi110

maybe try again with x64 using SP1?

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justin146

32 bit operating system only sees 4gigs total- your video ram takes away from that total.

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CravinR1

Upgrade to Vista x64 (XP x64 is a waste of time)

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SiPex

I'd rather not lol.. I just got everything set up the way i like it. 3.5 should be enough

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Exidous

Just what Justin146 said. 32bit sees 4GB max. 4GB- 512vid=3.5GB sysmem
4GB- 768GTX=~3.2GB sysmem

64bit is the ONLY way to see the full 4BG or run without a vid card :-p

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Cool Matty

Video cards aren't the only things that take away from the RAM either. PCI buses, sound devices, etc all use up that paging space.