How to check if your CPU Supports Second Level Address Translation (SLAT)?

If you want to know how to check whether your CPU Supports Second Level Address Translation (SLAT) or not, go through the tutorial below.

Preview Image

What is SLAT?

SLAT or “Second Level Address Translation” technology is mainly used by Hyper-V to perform more VM memory management functions and reduce the overhead of translating guest physical addresses to real physical addresses. As result, Hypervisor CPU time is significantly reduced, and more memory is saved for each VM. Second Level Address Translation technology is introduced in both Intel and AMD.
Intel calls their SLAT technology EPT(Extended Page Table). This technology was first introduced in the Nehalem microarchitecture found in Core i3, Core i5, and Core i7 processors.
AMD, introduced SLAT technology in their third generation Opteron processors (code name Barcelona). They called it Rapid Virtualization Indexing (RVI) technology.

Windows 8 has Hyper-V as a vitalization platform. SLAT will be required for Hyper-V in Windows 8.

Follow the steps to check if your CPU Supports Second Level Address Translation (SLAT).

Steps to check if your CPU Supports Second Level Address Translation (SLAT)

1. At first you need to download CoreInfo from here and extract it in the root of the C:\ drive (the drive where you have installed Windows 8).

2. Search Command Prompt by typing cmd in the Apps Search field ofWindows 8 charm screen (Metro UI).

Search cmd

3. Right click on cmd.exe and click on Run As Administrator.

Run cmd as admin

4. Now you need to navigate to the C:\ drive, you can do this by simply typing cd c:\ and then hit Enter

5. Next you need to type
coreinfo.exe -v
in command prompt and then hit Enter. If you are running coreinfo.exe for the first time, a window will pop up. Click on Agree.

Command Lines

6. If you are using Intel processor and your processor supports SLAT it will have an asterix in the EPT row. You can see this in the screenshot below:

Intel

If you are using AMD processor and your processor supports SLAT it will have an asterix in the NPT row. You can see this in the screenshot below:

AMD

If your processors don’t support SLAT you will see a dash in the EPT or NPT rows.

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