Intel Core is a brand name used for various mid-range to high-end consumer and business microprocessors.
In general, processors sold as Core are more powerful variants of the same processors marketed as entry-level Celeron and Pentium. Similarly, identical or more capable versions of Core processors are also sold as Xeon processors for the server market.
The current lineup of Core processors includes the latest Intel Core i7, Intel Core i5 and Intel Core i3, and the older Intel Core 2 Solo, Intel Core 2 Duo, Intel Core 2 Quad and Intel Core 2 Extreme lines[1].
Intel 8086 microprocessor is a first member of x86 family of processors. Advertised as a "source-code compatible" with Intel 8080 and Intel 8085 processors, the 8086 was not object code compatible with them. The 8086 has complete 16-bit architecture - 16-bit internal registers, 16-bit data bus, and 20-bit address bus (1 MB of physical memory). Because the processor has 16-bit index registers and memory pointers, it can effectively address only 64 KB of memory. To address memory beyond 64 KB the CPU uses segment registers - these registers specify memory locations for code, stack, data and extra data 64 KB segments. The segments can be positioned anywhere in memory, and, if necessary, user programs can change their position. This addressing method has one big advantage - it is very easy to write memory-independent code when the size of code, stack and data is smaller than 64 KB each. The complexity of the code and programming increases, sometimes significantly, when the size of stack, data and/code is larger than 64 KB. To support different variations of this awkward memory addressing scheme many 8086 compilers included 6 different memory models: tiny, small, compact, medium, large and huge. 64 KB direct addressing limitation was eliminated with the introduction of the 32-bit protected mode in Intel 80386 processor.

40-pin ceramic DIP
Industrial grade with burn-in screening

40-pin ceramic DIP
White ceramic/silver top/gold pins
Fujitsu was the only company who manufactured 8086 and 8088 processors in white-ceramic DIP package. It seems that the company never manufactured 8086 microprocessors in different ceramic package, and switched directly from white ceramic package to plastic DIP package.

40-pin plastic DIP
Low power (CMOS) version
Extended temperature range (-40°C to +85°C)

40-pin ceramic DIP
Rare Intel C8086 processor in purple ceramic DIP package with side-brazed pins. 8086 processors in this package were produced for short period of time. This processor was manufactured in week 32 of 1978 - shortly after the 8086 family was introduced in June 1978.

40-pin plastic DIP
Low power (CMOS) version
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