EM64T: Difference between revisions
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Intel Extended Memory 64 Technology ([http://www.intel.com/technology/64bitextensions/ Intel EM64T]) enables 64-bit computing on the server/workstation and desktop platforms when combined with supporting software. Intel EM64T improves performance by allowing the system to address more than 4 GB of both virtual and physical memory. |
Intel Extended Memory 64 Technology ([http://www.intel.com/technology/64bitextensions/ Intel EM64T]) enables 64-bit computing on the server/workstation and desktop platforms when combined with supporting software. Intel EM64T improves performance by allowing the system to address more than 4 GB of both virtual and physical memory. |
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Technically speaking, EM64T offers to Intel processors what [[x86-64]] offers to AMD processors. Ancient disagreements such as 3Dnow-vs- |
Technically speaking, EM64T offers to Intel processors what [[x86-64]] offers to AMD processors. Ancient disagreements such as 3Dnow-vs-MMX still holds, but the rest should be exactly the same. It is supported by latest XEON processors. |
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Intel EM64T provides support for: |
Intel EM64T provides support for: |
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Currently physical addresses are restricted to 40 bits, and linear addresses are restricted to 48 bits, sign-extended. |
Currently physical addresses are restricted to 40 bits, and linear addresses are restricted to 48 bits, sign-extended. |
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==See Also== |
== See Also == |
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===Articles=== |
=== Articles === |
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*[[ |
* [[X86-64]] |
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* [[Creating a 64-bit kernel]] |
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* [[User:Stephanvanschaik/Setting_Up_Long_Mode|Setting up long mode]] |
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* [http://www.intel.com/technology/64bitextensions/faq.htm intel's faq] |
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* [ftp://download.intel.com/design/Pentium4/manuals/25366816.pdf XEON manual] |
* [ftp://download.intel.com/design/Pentium4/manuals/25366816.pdf XEON manual] |
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[[Category:X86 CPU]] |
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[[Category:X86-64]] |
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Latest revision as of 23:15, 9 July 2023
Intel Extended Memory 64 Technology (Intel EM64T) enables 64-bit computing on the server/workstation and desktop platforms when combined with supporting software. Intel EM64T improves performance by allowing the system to address more than 4 GB of both virtual and physical memory.
Technically speaking, EM64T offers to Intel processors what x86-64 offers to AMD processors. Ancient disagreements such as 3Dnow-vs-MMX still holds, but the rest should be exactly the same. It is supported by latest XEON processors.
Intel EM64T provides support for:
- 64-bit flat virtual address space
- 64-bit pointers
- 64-bit wide general purpose registers (16 - added R8-R15)
- 64-bit integer support
- Up to 1 tebibyte (TiB) of platform address space
Currently physical addresses are restricted to 40 bits, and linear addresses are restricted to 48 bits, sign-extended.
See Also
Articles
External Links
- EM64T on Wikipedia.
- XEON manual