A.5.248 PREFETCH: Prefetch Data Into Caches
PREFETCH mem8 ; 0F 0D /0 [PENT,3DNOW]
PREFETCHW mem8 ; 0F 0D /1 [PENT,3DNOW]
PREFETCH and PREFETCHW fetch the line of data from memory that contains
the specified byte. PREFETCHW performs differently on the Athlon to
earlier processors.
For more details, see the 3DNow! Technology Manual.