Intel 80286

Studying for the A+, Network+ or Security+ exams? Get over 2,600 pages of FREE study guides at CertiGuide.com!

Join the PC homebuilding revolution! Read the all-new, FREE 200-page online guide: How to Build Your Own PC!

NOTE: Using robot software to mass-download the site degrades the server and is prohibited. See here for more.
Find The PC Guide helpful? Please consider a donation to The PC Guide Tip Jar. Visa/MC/Paypal accepted.

Take a virtual vacation any time at DesktopScenes.com - view my art photos online for FREE in either Flash or HTML!

Interested in current events? Read and share your opinions on news and topics of interest at CurEvents.com!

[ The PC Guide | Systems and Components Reference Guide | The Processor | Processor Families | Second Generation Processors ]

Intel 80286

The 80286 was the chip used in IBM's AT (advanced technology) system. The 286 was the first major step up in PC processors, providing significant performance increases over the 8088 and 8086--double or more performance at the same clock speed. The 286 also widened the address bus to allow access to 16 MB of memory, and introduced protected mode operation. It was originally available in 6 MHz and 8 MHz versions, but was later expanded to faster versions, all the way up to 20 MHz.

The 286 opened up the PC world to many users, but still was used mainly as the equivalent of a "turbo-charged 8088". At this time DOS was still the virtually exclusive operating system, and the protected mode the 286 offered was largely ignored.

The 80286 is of course considered obsolete today.

Look here for an explanation of the categories in the processor summary table below, including links to more detailed explanations.

General Information	Manufacturer	Intel
	Family Name	80286
	Code name	--
	Processor Generation	Second
	Motherboard Generation	Second
	Version	80286 -6	80286 -8	80286 -10	80286 -12	80286 -16	80286 -20
	Introduced	Feb. 1982		!?	!?	!?	!?
	Variants and Licensed Equivalents	AMD 286, 286S
Speed Specifications	Memory Bus Speed (MHz)	6	8	10	12	16	20
	Processor Clock Multiplier	1.0
	Processor Speed (MHz)	6	8	10	12	16	20
	"P" Rating	--
Benchmarks	iCOMP Rating	--
	iCOMP 2.0 Rating	--
	Norton SI	3.1	4.4	5.6	6.7	~9.0	~11.5
	Norton SI32	--
	CPUmark32	--
Physical Characteristics	Process Technology	CMOS
	Circuit Size (microns)	1.5
	Die Size (mm^2)	47
	Transistors (millions)	0.134
Voltage, Power and Cooling	External or I/O Voltage (V)	5
	Internal or Core Voltage (V)	5
	Power Management	None
	Cooling Requirements	None
Packaging	Packaging Style	68-Pin PGA
	Motherboard Interface	68-Pin Socket
External Architecture	Data Bus Width (bits)	16
	Maximum Data Bus Bandwidth (Mbytes/sec)	11.4	15.3	19.1	22.9	30.5	38.1
	Address Bus Width (bits)	24
	Maximum Addressable Memory	16 MB
	Level 2 Cache Type	None
	Level 2 Cache Size	--
	Level 2 Cache Bus Speed	--
	Multiprocessing	No
Internal Architecture	Instruction Set	80286
	MMX Support	No
	Processor Modes	Real, Protected
	x86 Execution Method	Native
Internal Components	Register Size (bits)	16
	Pipeline Depth (stages)	1
	Level 1 Cache Size	None
	Level 1 Cache Mapping	--
	Level 1 Cache Write Policy	--
	Integer Units	1
	Floating Point Unit / Math Coprocessor	Optional 80287 Coprocessor
	Instruction Decoders	1
	Branch Prediction Buffer Size / Accuracy	None
	Write Buffers	None
	Performance Enhancing Features	None

Next: Third Generation Processors

Home - Search - Topics - Up

Not responsible for any loss resulting from the use of this site.
Please read the Site Guide before using this material.