This content has not been validated; it was AI-generated following the x86-64 ISA Documentation generation process to maintain high quality. However, as no human has verified this data, errors may exist. If the accuracy of this data is critical, please consult the Intel SDM. The model used to generate this is gemma4:31b

VMOVDQU64

Moves 64 bits of data from the source to the destination. The instruction performs an unaligned move, meaning the memory address does not need to be aligned to a 8-byte boundary.

The table below covers what the source and destinations can be.

DO NOT support LOCK

This instruction is available in 64-bit mode and compatibility mode. It is part of the AVX extension set; therefore, the CPU MUST support the AVX ISA for this instruction to be executable.

To avoid performance degradation or general protection faults, ensure that the memory operand does not cross a page boundary unless the hardware supports unaligned accesses across pages. While the instruction is designed for unaligned memory, accessing memory outside the allocated segment or page boundaries will trigger a page fault.