ASROCK X299 Taichi XE Manual page 83

and applications in independent partitions, so that one computer system can
function as multiple virtual systems.
Intel Safer Mode Extensions (SMX)
Enable/disable the Intel SMX (Safer Mode Extensions).
Hardware Prefetcher
Automatically prefetch data and code for the processor. Enable for better
performance.
Adjacent Cache Line Prefetch
Automatically prefetch the subsequent cache line while retrieving the currently
requested cache line. Enable for better performance.
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