Windows 7 32-bit to 64-bit upgrade

I will be getting a Toshiba Satellite L505D-S5983 Laptop, and it has only 3gb's of DDR2 RAM, so it comes with Windows 7 32-bit, but I want more RAM, and I was going to add 2gb's more, so i could run 64-bit. Does anyone know any way I could upgrade from 32-bit to 64-bit? And if not, will the computer recognize the two extra gig's of RAM and use them, and still run 32-bit ok? Because I heard that the computer needed 3gb's of ram for 32-bit, and even if you added more RAM to it the computer wouldn't recognize it and would just run on the 3gb's already installed. I would really like an answer!

Hi BlargeMan,
As Mark said, if you would like to install Windows 7 x64 bit over x32 version, you need perform a clean installation.
Regarding the recommended System Requirements for Windows 7, please refer to this thread: Windows 7 min. system requirements.
As to the RAM in x32 bit version operating systems, if you have more than 4GB RAM, it will only recognized a portion of the physical 4GB of RAM (ranges from 2.75GB to 3.5GB depending on the devices installed, motherboard's chipset & BIOS). If you would like to know more information about this, please refer to this website.
Please Note: Since the web site is not hosted by Microsoft, the link may change without notice. Microsoft does not guarantee the accuracy of this information.
In addition, before you install Windows 7, it is recommended running Windows 7 Upgrade Advisor to check the potential issues.
Regards,
Linda

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Solved!
Go to Solution.

buzgun wrote:
Okay, good to know. I still need to know whether I can get Levono to ship my machine with the configuration I've selected, only with Vista Basic 64-bit
SInce Lenovo don't offer either type of Vista Home in a X64 version, the answer is quite simply, no.
buzgun wrote:
what would be most cost-effective would also be appreciated.
Sweating on the OS cost when you are planning to put an expensive 8 GB of RAM into a system seems to be quite cost-ineffective IMO!
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