EM64T supported?

Chuck Swiger cswiger at mac.com
Thu Nov 17 20:04:38 GMT 2005

Marc G. Fournier wrote:
> First off, what is it?  On 32bit platforms, to address >4G of RAM, I 
> recall that there is some sort of 'paging' that has to be done to 
> address it ... does EM64T get around that somehow, or is this just 
> another name for it?

EM64T uses 64-bit wide registers and addressing, and can talk to >4GB of RAM 
natively.  Older processors may still support >4GB of physical RAM using the 
PSE/PSE-36 CPU extensions, but are still using 32-bit registers.


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