Instruction
MOVNTQ
Stores an MMX register to memory with a non-temporal hint, which lets the write bypass the caches; SSE.
- Extensions
- Forms
- 1 (1 Legacy)
- Data
- Intel XED v2026.08.23
Forms
| Instruction | Encoding | Requires |
|---|---|---|
MOVNTQ m64, mm
MOVNTQ_MEMq_MMXq | NP 0F E7 /r | SSE |
Data flow
Where the elements of the sources go, element 0 on the right; results that depend on a control value are drawn for an example. How to read.
Result quadword i is quadword i of mm2. Result quadwords: a0.
Operation
What the forms do, in pseudocode that our tests run against results recorded on real processors. How to read.
mem.write(mm2.read())
# x87: TOP = 0, all tags validRun on AMD Zen 5 (EPYC 9645): 1 case.
Operands
| Operand | Kind | Action |
|---|---|---|
MOVNTQ m64, mm | ||
m64 | explicit | write |
mm | explicit | read |
Flags
None: XED records no flag that the forms test or change.
Exceptions
The exception class is XED's name for the set of exception conditions that a form follows. How to read.
- All forms
mmx-nofp2
Attributes
What else XED records about the forms. How to read.
- All forms
- non-temporal hint; may abort a TSX transaction
CPUID and processors
Each form belongs to an XED ISA set. A form can be used when the processor reports every CPUID bit of one of its ISA set's alternatives.
| ISA set | CPUID | Processors |
|---|---|---|
SSE | SSE | Every x86-64 processor in XED’s model and Zen 3 to Zen 6 |
More SSE instructions
Sources
- Intel XED v2026.08.23 (commit
0bcb6237345c): forms, encodings, operands, flags, exception classes, attributes, ISA sets, CPUID bits and chip model. - The CPU data of x86-64.net: Zen 3 to Zen 6, from GCC’s
-marchfeature sets and AMD’s Processor Programming References, which the page of each processor cites. - Intel 64 and IA-32 Architectures Software Developer's Manual, Volume 2 (325383-093, September 2026): Volume 2B, page 4-98 (MOVNTQ)
- Intel 64 and IA-32 Architectures Software Developer's Manual, Volume 1 (253665-093, September 2026)
The tables are derived from Intel XED, Copyright Intel Corporation, licensed under the Apache License 2.0; x86-64.net converted and reformatted them. The text is our own.