Do I have a 32-bit or 64-bit processor?

How to check what kind of processor you have (CPU) and what operating system can I run on it?

An X64 has a 64 bit microprocessor, whereas an X86, derived from the old 8086 PC, has a 32 bit microprocessor. A 32 bit machine and/or OS (operating system) is limited to about 3.55GB of memory, and an X64 is limited to about 17,179,869,184 gigabytes, 17,179,869 terabytes, or about 16 exabytes of RAM. Also a 32-bit CPU cannot run an 64-bit OS.

So, how to check your CPU:

Since you cannot run WIndows7-64x on a 32-bit machine lets look at windows 7.  From the Start icon on the toolbar select Control Panel. Look for Hardware and SOund and select View devices and printers. Double-click your computer (will be labeled with your machine name). A Properties window pops-up with two tabs, select the Hardware tab. Look for a name starting with ACPI, with Type of Computer. If it says ACPI x64-based PC you know you have a 64-bit machine, CONGRATULATIONS! You can now install a 64-bit OS like Vista-64 or Windows7-64 and run any of your old software as the new 64-bit OS "knows" (is compatible) how to run the 32-bit apps.

What about memory?

If you want to install more than 4GB or RAM you will need to have a 64-bit CPU and also run a 64-bit OS otherwise you are wasting your money.

Print | posted @ Friday, October 9, 2009 1:59 PM

Comments on this entry:

Gravatar # re: Do I have a 32-bit or 64-bit processor?
by MrPinkle at 11/11/2009 4:44 PM

A 32-bit OS cannot run a 64-bit OS? Do you mean a 32-bit CPU cannot run a 64-bit OS?
Gravatar # re: Do I have a 32-bit or 64-bit processor?
by Renso at 11/12/2009 8:26 AM

Thanks MrPinkle, you are of course right :-)
Gravatar # re: Do I have a 32-bit or 64-bit processor?
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Gravatar # what it signifies?
by rahul raina at 2/10/2012 10:15 AM

If i say that i have 32-bit os, what it signifies.
does it mean that the instruction set size is 32-bits.
what does it mean??? please mail me
Gravatar # re: Do I have a 32-bit or 64-bit processor?
by secockpit at 3/24/2013 6:02 AM

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Gravatar # 32-bit OS,x64 based processor...what does it mean???
by suryateja at 4/7/2013 5:18 AM

Hello sir, I have just had a glance on "PC Info" on my Windows 8 and found out "32-bit OS, x64 based processor".
could u be kind enough to explain what it means??
does it mean i can install a 64-bit OS too [not dual-booting btw]???
Gravatar # re: Do I have a 32-bit or 64-bit processor?
by Cashkaro at 4/18/2013 8:31 AM

if you look for buying processor then i suggest you 64-bit processor. because latest application or software only support 64-bit. ..
Gravatar # re: Do I have a 32-bit or 64-bit processor?
by Myntra Coupon code at 4/25/2013 3:39 AM

Quiet new to the forum. And thanks for sharing the topic.
Gravatar # re: Do I have a 32-bit or 64-bit processor?
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