3-172 Vol. 2A CPUID—CPU Identification
INSTRUCTION SET REFERENCE, A-M
Figure 3-6. Feature Information Returned in the ECX Register
OM16524b
CNXT-ID — L1 Context ID
012345678910111213141516171819202122232425262728293031
ECX
TM2 — Thermal Monitor 2
EST — Enhanced Intel SpeedStep® Technology
DS-CPL — CPL Qualified Debug Store
MONITOR — MONITOR/MWAIT
SSE3 — SSE3 Extensions
Reserved
CMPXCHG16B
SMX — Safer Mode Extensions
xTPR Update Control
SSSE3 — SSSE3 Extensions
PDCM — Perf/Debug Capability MSR
VMX — Virtual Machine Extensions
SSE4.1
POPCNT
SSE4.2