intel - 2015 - evidence: VALIDATED_LIMITED

Intel Skylake i7-6700K

A mature client CPU: wide out-of-order cores, layered caches, SIMD extensions, aggressive power management, and system fabric as part of the processor identity.

Evidence source: martingallagher-code/modeling_2026/models/intel/skylake_i7_6700k

Technology Coordinates

Dimension	Value	Meaning
ISA Contract	Extension Layered	The base ISA grows through optional vector, crypto, floating-point, or privilege extensions.
Datapath	Renamed Physical Registers	Out-of-order cores map architectural names onto a larger physical register pool.
Control Unit	Dynamic Scheduler	Runtime readiness, hazards, and resources determine when work issues.
Execution Organization	Out-of-Order	The CPU executes ready operations around stalled ones while preserving architectural results.
Memory System	Shared Last-Level Cache	Multiple cores rely on a shared L3 or system cache.
Parallelism Topology	Multicore	Multiple cores cooperate through shared memory and interconnect.
Physical Implementation	FinFET / Advanced Node	Density and energy constraints favor large SoCs, chiplets, and specialized blocks.
Power and Thermal Regime	Desktop Thermal	Boost and cooling determine how long peak clocks can be sustained.
System Role	General Purpose	Runs operating systems and varied applications.
Evidence Layer	Validated Limited	Useful evidence exists, but coverage is limited.

Technological Lessons

Modern CPU identity includes the uncore, cache hierarchy, and power controller.

Nominal issue width is less important than sustained resource balance.

ISA extensions accumulate into a layered compatibility ecology.