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32 bit versus 64 bit

Last response: in Windows 7
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March 5, 2010 1:23:29 AM

Hello, I am buying a simple laptop, 15", T4300 or 4400, 2-4gb memory, 160-320 gb Hard drive. I use it for email, web browsing, and minor office functions. My question is: " Will I notice the difference in performance between the 32 bit and the 64 bit version of Win 7 Home Premium".

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a b $ Windows 7
March 5, 2010 2:13:25 AM

probably none whatsoever, though go for the 64bit if you can so when you need more ram you can just add it
a b $ Windows 7
March 5, 2010 6:16:05 AM

+1. No difference in performance since there are very few 64-bit applications out there. You will however be able to add more than 4GB of RAM if the laptop has space for it.
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March 5, 2010 7:25:52 AM

Doesn't the 3.2GB RAM limitation only hold for 32bit XP and Vista? I thought win 7 doesnt matter if its 32bit or 64bit.
a b $ Windows 7
March 5, 2010 7:50:59 AM

Collie147 said:
Doesn't the 3.2GB RAM limitation only hold for 32bit XP and Vista? I thought win 7 doesnt matter if its 32bit or 64bit.


Nope, it has to do with how much RAM the OS can address. 2^32 = 4294967296 bits. Divide that by 1024 twice and it gives you 4096 Megabytes, which is the theoretical maximum of addressable RAM for a 32bit OS. This is as much a limitation for Windows 7 32bit as it is for Vista and XP.

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a b $ Windows 7
March 5, 2010 12:18:36 PM
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concur - very litle to no performance differnce between 32 bit and 64 bit Win 7 on a laptop.
Most laptops come with 32 bit preinstalled with less than 4 gigs ram, 4 gigs = 64 Bit preinstalled. Howerver there has been a shift toward 64 bit on laptops with 2 gigs preinstalled and have a max of 4 gigs.

As also stated by others Most apps that you will use are still 32 bit.

Real life diff, if you upgrade to 4 gigs of ram, is that with 64 bit Win 7 you will have 4 gigs available for the operating system and programs. With a 32 bit (in a laptop) you will have about 3.5 gigs available for the operating system and programs due to memmory mapping. Will 1/2 gig make a diff - For you NO.

Bottom line - Unless you have a preference, Flip a coin, or take what comes preinstalled and enjoy.

PS I have both. Laptop 4gigs ram - 32 bit win 7. My coin came up tails (realy my preference for laptop.
Desktop w/4gigs ram 64 bit Win 7
March 5, 2010 1:39:18 PM

Chief, Thank you very much for your reply. It alleviates my concerns. jmac
March 6, 2010 2:29:17 PM

Best answer selected by 1943jmac.
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