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MOVUPS

Moves 128 bits of packed single-precision floating-point data from a source to a destination. This instruction does not require the memory addresses to be aligned on 16-byte boundaries.

The table below covers the supported sources and destinations.

DO NOT support LOCK

This instruction is available in 64-bit mode and 32-bit mode. It requires the SSE extension to be supported by the processor.

Using MOVUPS on memory that is aligned to a 16-byte boundary may result in better performance on older microarchitectures, although modern processors minimize the performance penalty difference between MOVUPS and MOVAPS. Failure to use MOVUPS when data is unaligned will result in a general-protection exception (#GP).