4 ms·
AVX is normally 256-bit, but it also allows 128-bit instructions with a VEX prefix. Benefits of that include three operands and unaligned access, as well as hig
by yuhong 10y ago
AVX is normally 256-bit, but it also allows 128-bit instructions with a VEX prefix. Benefits of that include three operands and unaligned access, as well as higher performance when mixed with 256-bit instructions. Of course, you need a AVX-capable CPU and an OS that support AVX XSAVE to be able to use them.