Question For an AMD EPYC system, what are these functions in the BIOS menu options? Can you explain them in more detail? NX Mode: This setting Enables or Disables the no-execute page protection function. SVM Mode: This setting Enables or Disables CPU Virtualization. CPB Mode: This sets the CPB mode to Auto or Disable. C6 Mode: Use this setting to Enable or Disable the C6 Mode Global C State Control Answer NX Mode: Similar to Intel eXecute Disable (XD), AMD BIOS calls it No eXecute bit (NX); a technology used in processors to prevent execution of certain types of code. SVM Mode: Similar to Intel VT-d, AMD EPYC calls it Secure Virtual Machine (SVM) CPB Mode: It's for AMD CPU auto frequency adjustment function. C6 Mode: Means deep down, BIOS will automatically disable CPU core and cache for power saving. Global C-state Control: Affects power saving mode and efficiency. Was this FAQ helpful? YES      NO Enter Comments Below: Note: Your comments/feedback should be limited to this FAQ only. For technical support, please send an email to support@supermicro.com. Enter your email address below if you'd like a technical support staff to reply: FAQ Stats FAQ ID Related Category / Keyword Date Posted Code 26918 BIOS: - AMI BIOS 12/01/17     Print Answer