Can I move my TEMP and TMP data to a RAMDisk?

There are two TEMP directories. One is C:\Windows\Temp and another is C:\Users\username\AppData\Local\Temp

You can move both of them without any problem but you need to set the correct environment variable.

Step 1 - Move the TEMP folder to your RAMDisk.

Step 2 - Click Start menu, right-click My Computer, and select Properties. Select Advanced System Settings. You might need to confirm a UAC prompt. Then click the Environment Variables button.

Step 3.A - If moving the C:\Windows\Temp folder, look under System variables and find TEMP and TMP variables. Change both their values to the path of the Temp folder on your RAMDisk.

Step 3.B - If moving C:\Users\username\AppData\Local\Temp folder look under User variables and find TEMP and TMP variables.  Change both their values to the path of the Temp folder on your RAMDisk.

Step 4 - Confirm the change by clicking OK.