List of Intel processors

This generational list of Intel processors attempts to present all of Intel's processors from the pioneering 4-bit 4004 (1971) to the present high-end offerings. Concise technical data is given for each product.
All processors.
All processors are listed here in chronological order.
The 4-bit processors.
Intel 4004.
First microprocessor (single-chip IC processor)
MCS-4 family:
Microcontrollers.
They are ICs with CPU, RAM, ROM (or PROM or EPROM), I/O Ports, Timers & Interrupts
Intel 8048.
MCS-48 family:
Intel 8051.
MCS-51 family:
Intel 80151.
MCS-151 family:
Intel 80251.
MCS-251 family:
The bit-slice processor.
3000 Family.
Introduced in the third quarter of 1974, these components used bipolar Schottky transistors. Each component implemented two bits of a processor function; packages could be interconnected to build a processor with any desired word length. 
Members of the family:
Bus width 2* "n" bits data/address (depending on number "n" of slices used)
32-bit processors: P6/Pentium M microarchitecture.
Celeron (Pentium II-based).
Pentium II Xeon "(chronological entry)"
Celeron (Pentium III Coppermine-based).
XScale "(chronological entry – non-x86 architecture)"
Pentium 4 (not 4EE, 4E, 4F), Itanium, P4-based Xeon, Itanium 2 "(chronological entries)"
32-bit processors: NetBurst microarchitecture.
Pentium 4.
Itanium "(chronological entry – new non-x86 architecture)"
Xeon (32-bit NetBurst).
Itanium 2 "(chronological entry – new non-x86 architecture)"
64-bit processors: Intel 64 – Nehalem microarchitecture.
Core i7 (1st Generation).
TODO: Westmere
64-bit processors: Intel 64 – Broadwell microarchitecture.
Other Broadwell CPUs.
Not listed (yet) are several Broadwell-based CPU models:
Note: this list does not say that all processors that match these patterns are Broadwell-based or fit into this scheme. The model numbers may have suffixes that are not shown here.
64-bit processors: Intel 64 – Skylake microarchitecture.
Other Skylake Processors.
Many Skylake-based processors are not yet listed in this section: mobile i3/i5/i7 processors (U, H, and M suffixes), embedded i3/i5/i7 processors (E suffix), certain i7-67nn/i7-68nn/i7-69nn.
Skylake-based "Core X-series" processors (certain i7-78nn and i9-79nn models) can be found under current models.
Intel 805xx product codes.
Intel discontinued the use of part numbers such as 80486 in the marketing of mainstream x86-architecture microprocessors with the introduction of the Pentium brand in 1993. However, numerical codes, in the 805xx range, continued to be assigned to these processors for internal and part numbering uses. The following is a list of such product codes in numerical order: