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Windows 7: Vista Ult 32 to Win 7 Ult 32 bit Upgrade - BSOD

05 Nov 2009   #11

Vista Ultimate 32 bit

Sucess all working great - thanks for all your help. A quick question though, I have reinstalled all my ram totalling 5.50gb and in Vista it showed this. In Win 7 it shoes the 5.50gb but states in brackets that 3.50gb useable. Does this mean that I may as well remove the other ram cards if they are not being used, and how come Win 7 wont use all the RAM?

My System SpecsSystem Spec
05 Nov 2009   #12

Windows 7 Ultimate x64 SP1

32 bit operating systems cannot use more than 3.5 GB of RAM. If you want to use all of your RAM, you must switch to a 64 bit OS.
My System SpecsSystem Spec
05 Nov 2009   #13

Microsoft Community Contributor Award Recipient

Windows 7 Ult x64 - SP1/ Windows 8 Pro x64

Glad to hear you got it installed.

Surprised that 32bit Vista would say that, 32bit OS will only be able to use 3.3 to 3.5 GB of RAM. The 32bit OS addressing is 4GB and other hardware uses it also, RAM gets whats leftover.

If you want to use all the RAM you'll need to install the 64bit version.

Just run it for a while and see if you notice any difference.
My System SpecsSystem Spec


 Vista Ult 32 to Win 7 Ult 32 bit Upgrade - BSOD

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