ASROCK Vision HT Series User Manual page 45

No-Execution (NX) Memory Protection Technology is an enhancement
to the IA-32 Intel Architecture. An IA-32 processor with "No Execute (NX)
Memory Protection" can prevent data pages from being used by malicious
software to execute code. This option will be hidden if the current CPU
does not support No-Excute Memory Protection.
Intel Virtualization Technology
When this option is set to [Enabled], a VMM (Virtual Machine Architecture)
can utilize the additional hardware capabilities provided by Vanderpool
Technology. This option will be hidden if the installed CPU does not
support Intel Virtualization Technology.
Hardware Prefetcher
Use this item to turn on/off the MLC streamer prefetcher.
Adjacent Cache Line Prefetch
Use this item to turn on/off prefetching of adjacent cache lines.
45