How to check (on Windows) if CPU is 64-bit compatible?

Question

I'm converting old Windows desktop machines from 2005-2009 into cheap Ubuntu Linux servers. I want to know which ones can handle a 64-bit OS and which can't. I read that some x86 CPUs are 64-bit compatible. The question is how to check.

score 11 · Accepted Answer · edited Sep 29 '11 at 05:04

11

The definitive method:

Download CPUZ
Install and run it
Check the "Instructions" value for EM64T (if Intel) or AMD64 (if AMD).

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edited Sep 29 '11 at 05:04

Gareth

19,080

answered May 21 '10 at 22:55

Bill Paetzke

675

score 2 · Answer 2 · edited Sep 29 '11 at 05:05

2

SecurAble

Run this utility and check the field "Maximum Bit Length"; it will show either 32 or 64. This utility is mainly used for checking if your CPU supports hardware virtualization, but it can be used for this purpose as well.

edited Sep 29 '11 at 05:05

Gareth

19,080

answered May 22 '10 at 05:52

Om Nom Nom

1,395

How to check (on Windows) if CPU is 64-bit compatible?

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