Intel 486
essor> (Or "i486", "iAPX 80486", and "Intel DX4" but usually just "486"). A range of ef="module.php?name=Lexikon&file=search&eid=1&query=Intel">Intel ef="module.php?name=Lexikon&file=search&eid=1&query=CISC">CISC ef="module.php?name=Lexikon&file=search&eid=1&query=microprocessors">microprocessors which is part of the ef="module.php?name=Lexikon&file=search&eid=1&query=Intel 80x86">Intel 80x86 family of processors. The 486s are very similar to their immediate predecessor, the ef="module.php?name=Lexikon&file=search&eid=1&query=Intel 80386">Intel 80386DX. The main differences are that the 486 has an optimised ef="module.php?name=Lexikon&file=search&eid=1&query=instruction set">instruction set, has an on-chip unified instruction and data ef="module.php?name=Lexikon&file=search&eid=1&query=cache">cache, an optional on-chip ef="module.php?name=Lexikon&file=search&eid=1&query=floating-point unit">floating-point unit (FPU), and an enhanced {bus interface unit}. These improvements yield a rough doubling in performance over an ef="module.php?name=Lexikon&file=search&eid=1&query=Intel 80386">Intel 80386 at the same ef="module.php?name=Lexikon&file=search&eid=1&query=clock rate">clock rate. There are several suffixes and variants including: ef="module.php?name=Lexikon&file=search&eid=1&query=Intel 486SX">Intel 486SX - a 486DX with its ef="module.php?name=Lexikon&file=search&eid=1&query=FPU">FPU disabled (see ef="module.php?name=Lexikon&file=search&eid=1&query=crippleware">crippleware). ef="module.php?name=Lexikon&file=search&eid=1&query=Intel 486DX">Intel 486DX - 486SX with a working ef="module.php?name=Lexikon&file=search&eid=1&query=FPU">FPU. 486DX-2 - runs at twice the external ef="module.php?name=Lexikon&file=search&eid=1&query=clock rate">clock rate. 486SX-2 - runs at twice the external ef="module.php?name=Lexikon&file=search&eid=1&query=clock rate">clock rate. 486SL - 486DX with power conservation circuitry. 486SL-NM - 486SX with power conservation circuitry SL enhanced suffix, denotes a 486 with special power conservation circuitry similar to that in the 486SL processors. 487 - 486DX with a slightly different pinout for use in 486SX systems. OverDrive - 486DX-2 with a slightly different pinout for use in 486SX systems. ef="module.php?name=Lexikon&file=search&eid=1&query=RapidCAD">RapidCAD - 486DX in a special package with a companion ef="module.php?name=Lexikon&file=search&eid=1&query=FPU">FPU dummy package for use in ef="module.php?name=Lexikon&file=search&eid=1&query=Intel 80386">Intel 80386 systems. ef="module.php?name=Lexikon&file=search&eid=1&query=Intel DX4">Intel DX4, ef="module.php?name=Lexikon&file=search&eid=1&query=Cyrix">Cyrix ef="module.php?name=Lexikon&file=search&eid=1&query=Cy486SLC">Cy486SLC. external ef="module.php?name=Lexikon&file=search&eid=1&query=clock rates">clock rates include 16MHz, 20MHz, 25MHz, 33MHz, 40MHz, although 16Mhz is rare now, and the 20MHz processors are often clock doubled. The 486 processor has been licensed or reverse engineered by other companies such as ef="module.php?name=Lexikon&file=search&eid=1&query=IBM">IBM, ef="module.php?name=Lexikon&file=search&eid=1&query=AMD">AMD, ef="module.php?name=Lexikon&file=search&eid=1&query=Cyrix">Cyrix, and {Chips & Technologies}. Some are almost exact duplicates in specications and performance, some aren' t. The successor to the 486 is the ef="module.php?name=Lexikon&file=search&eid=1&query=Pentium">Pentium. (1995-02-21) e="border-width:thin; border-color:#333333; border-style:dashed; padding:5px;" align="left">In addition suitable contents:
[ ef="module.php?name=Lexikon&op=content&tid=31">2 ] [ ef="module.php?name=Lexikon&op=content&tid=43">386 ] [ ef="module.php?name=Lexikon&op=content&tid=60">486 ] [ ef="module.php?name=Lexikon&op=content&tid=61">486SX ] [ ef="module.php?name=Lexikon&op=content&tid=104">80386 ] [ ef="module.php?name=Lexikon&op=content&tid=105">8048 ] [ ef="module.php?name=Lexikon&op=content&tid=106">80486 ] [ ef="module.php?name=Lexikon&op=content&tid=112">80x86 ] [ ef="module.php?name=Lexikon&op=content&tid=134">= ] [ ef="module.php?name=Lexikon&op=content&tid=261">AD ] [ ef="module.php?name=Lexikon&op=content&tid=396">ag ] [ ef="module.php?name=Lexikon&op=content&tid=411">ai ] [ ef="module.php?name=Lexikon&op=content&tid=433">al ] [ ef="module.php?name=Lexikon&op=content&tid=531">alt ] [ ef="module.php?name=Lexikon&op=content&tid=543">AM ] [ ef="module.php?name=Lexikon&op=content&tid=544">am ] [ ef="module.php?name=Lexikon&op=content&tid=554">AMD ] [ ef="module.php?name=Lexikon&op=content&tid=592">an ] [ ef="module.php?name=Lexikon&op=content&tid=740">ar ] [ ef="module.php?name=Lexikon&op=content&tid=743">arc ] [ ef="module.php?name=Lexikon&op=content&tid=800">as ] [ ef="module.php?name=Lexikon&op=content&tid=894">at ] [ ef="module.php?name=Lexikon&op=content&tid=1025">B ] [ ef="module.php?name=Lexikon&op=content&tid=1026">b ] [ ef="module.php?name=Lexikon&op=content&tid=1181">be ] [ ef="module.php?name=Lexikon&op=content&tid=1672">bus ] [ ef="module.php?name=Lexikon&op=content&tid=1695">by ] [ ef="module.php?name=Lexikon&op=content&tid=1708">C ] [ ef="module.php?name=Lexikon&op=content&tid=1723">CA ] [ ef="module.php?name=Lexikon&op=content&tid=1724">ca ] [ ef="module.php?name=Lexikon&op=content&tid=1726">cache ] [ ef="module.php?name=Lexikon&op=content&tid=1739">CAD ] [ ef="module.php?name=Lexikon&op=content&tid=1863">cat ] [ ef="module.php?name=Lexikon&op=content&tid=1896">cc ] [ ef="module.php?name=Lexikon&op=content&tid=2000">Ch ] [ ef="module.php?name=Lexikon&op=content&tid=2001">ch ] [ ef="module.php?name=Lexikon&op=content&tid=2069">chip ] [ ef="module.php?name=Lexikon&op=content&tid=2076">Chips & Technologies ] [ ef="module.php?name=Lexikon&op=content&tid=2099">ci ] [ ef="module.php?name=Lexikon&op=content&tid=2121">circuit ] [ ef="module.php?name=Lexikon&op=content&tid=2127">CIS ] [ ef="module.php?name=Lexikon&op=content&tid=2128">CISC ] [ ef="module.php?name=Lexikon&op=content&tid=2136">ck ] [ ef="module.php?name=Lexikon&op=content&tid=2138">cl ] [ ef="module.php?name=Lexikon&op=content&tid=2188">clock ] [ ef="module.php?name=Lexikon&op=content&tid=2189">clock rate ] [ ef="module.php?name=Lexikon&op=content&tid=2247">co ] [ ef="module.php?name=Lexikon&op=content&tid=2330">com ] [ ef="module.php?name=Lexikon&op=content&tid=2545">con ] [ ef="module.php?name=Lexikon&op=content&tid=2606">cons ] [ ef="module.php?name=Lexikon&op=content&tid=2791">cr ] [ ef="module.php?name=Lexikon&op=content&tid=2815">crippleware ] [ ef="module.php?name=Lexikon&op=content&tid=2900">cu ] [ ef="module.php?name=Lexikon&op=content&tid=2942">Cy486SLC ] [ ef="module.php?name=Lexikon&op=content&tid=2973">Cyrix ] [ ef="module.php?name=Lexikon&op=content&tid=2976">D ] [ ef="module.php?name=Lexikon&op=content&tid=3006">data ] [ ef="module.php?name=Lexikon&op=content&tid=3151">de ] [ ef="module.php?name=Lexikon&op=content&tid=3177">dec ] [ ef="module.php?name=Lexikon&op=content&tid=3371">diff ] [ ef="module.php?name=Lexikon&op=content&tid=3436">ding ] [ ef="module.php?name=Lexikon&op=content&tid=3565">do ] [ ef="module.php?name=Lexikon&op=content&tid=3752">du ] [ ef="module.php?name=Lexikon&op=content&tid=3790">DX4 ] [ ef="module.php?name=Lexikon&op=content&tid=3834">e ] [ ef="module.php?name=Lexikon&op=content&tid=3865">ec ] [ ef="module.php?name=Lexikon&op=content&tid=3896">ed ] [ ef="module.php?name=Lexikon&op=content&tid=3929">ee ] [ ef="module.php?name=Lexikon&op=content&tid=4082">engine ] [ ef="module.php?name=Lexikon&op=content&tid=4148">er ] [ ef="module.php?name=Lexikon&op=content&tid=4150">era ] [ ef="module.php?name=Lexikon&op=content&tid=4171">es ] [ ef="module.php?name=Lexikon&op=content&tid=4199">et ] [ ef="module.php?name=Lexikon&op=content&tid=4497">fi ] [ ef="module.php?name=Lexikon&op=content&tid=4520">file ] [ ef="module.php?name=Lexikon&op=content&tid=4595">fix ] [ ef="module.php?name=Lexikon&op=content&tid=4655">floating-point ] [ ef="module.php?name=Lexikon&op=content&tid=4700">fo ] [ ef="module.php?name=Lexikon&op=content&tid=4727">for ] [ ef="module.php?name=Lexikon&op=content&tid=4814">FP ] [ ef="module.php?name=Lexikon&op=content&tid=4825">FPU ] [ ef="module.php?name=Lexikon&op=content&tid=5057">ge ] [ ef="module.php?name=Lexikon&op=content&tid=5134">gh ] [ ef="module.php?name=Lexikon&op=content&tid=5141">gi ] [ ef="module.php?name=Lexikon&op=content&tid=5434">h ] [ ef="module.php?name=Lexikon&op=content&tid=5540">hat ] [ ef="module.php?name=Lexikon&op=content&tid=5681">hn ] [ ef="module.php?name=Lexikon&op=content&tid=5768">hr ] [ ef="module.php?name=Lexikon&op=content&tid=5779">ht ] [ ef="module.php?name=Lexikon&op=content&tid=5851">i486 ] [ ef="module.php?name=Lexikon&op=content&tid=5868">IBM ] [ ef="module.php?name=Lexikon&op=content&tid=5931">id ] [ ef="module.php?name=Lexikon&op=content&tid=5956">ie ] [ ef="module.php?name=Lexikon&op=content&tid=5986">iff ] [ ef="module.php?name=Lexikon&op=content&tid=6013">il ] [ ef="module.php?name=Lexikon&op=content&tid=6064">in ] [ ef="module.php?name=Lexikon&op=content&tid=6068">inc ] [ ef="module.php?name=Lexikon&op=content&tid=6070">include ] [ ef="module.php?name=Lexikon&op=content&tid=6190">instruction set ] [ ef="module.php?name=Lexikon&op=content&tid=6194">int ] [ ef="module.php?name=Lexikon&op=content&tid=6217">Intel 486DX ] [ ef="module.php?name=Lexikon&op=content&tid=6218">Intel 486SX ] [ ef="module.php?name=Lexikon&op=content&tid=6224">Intel 80386 ] [ ef="module.php?name=Lexikon&op=content&tid=6234">Intel 80x86 ] [ ef="module.php?name=Lexikon&op=content&tid=6274">interface ] [ ef="module.php?name=Lexikon&op=content&tid=6413">io ] [ ef="module.php?name=Lexikon&op=content&tid=6449">ir ] [ ef="module.php?name=Lexikon&op=content&tid=6481">IS ] [ ef="module.php?name=Lexikon&op=content&tid=6482">is ] [ ef="module.php?name=Lexikon&op=content&tid=6558">it ] [ ef="module.php?name=Lexikon&op=content&tid=6822">ki ] [ ef="module.php?name=Lexikon&op=content&tid=6918">la ] [ ef="module.php?name=Lexikon&op=content&tid=7023">ld ] [ ef="module.php?name=Lexikon&op=content&tid=7091">Lex ] [ ef="module.php?name=Lexikon&op=content&tid=7107">li ] [ ef="module.php?name=Lexikon&op=content&tid=7410">lt ] [ ef="module.php?name=Lexikon&op=content&tid=7415">lu ] [ ef="module.php?name=Lexikon&op=content&tid=7441">ly ] [ ef="module.php?name=Lexikon&op=content&tid=7457">M ] [ ef="module.php?name=Lexikon&op=content&tid=7463">ma ] [ ef="module.php?name=Lexikon&op=content&tid=7582">man ] [ ef="module.php?name=Lexikon&op=content&tid=7700">MD ] [ ef="module.php?name=Lexikon&op=content&tid=7837">MHz ] [ ef="module.php?name=Lexikon&op=content&tid=7848">micro ] [ ef="module.php?name=Lexikon&op=content&tid=7880">microprocessor ] [ ef="module.php?name=Lexikon&op=content&tid=7932">mil ] [ ef="module.php?name=Lexikon&op=content&tid=8019">mm ] [ ef="module.php?name=Lexikon&op=content&tid=8032">mo ] [ ef="module.php?name=Lexikon&op=content&tid=8040">mod ] [ ef="module.php?name=Lexikon&op=content&tid=8079">module ] [ ef="module.php?name=Lexikon&op=content&tid=8167">mp ] [ ef="module.php?name=Lexikon&op=content&tid=8228">ms ] [ ef="module.php?name=Lexikon&op=content&tid=8378">my ] [ ef="module.php?name=Lexikon&op=content&tid=8384">N ] [ ef="module.php?name=Lexikon&op=content&tid=8386">na ] [ ef="module.php?name=Lexikon&op=content&tid=8460">nc ] [ ef="module.php?name=Lexikon&op=content&tid=8472">ne ] [ ef="module.php?name=Lexikon&op=content&tid=8627">ng ] [ ef="module.php?name=Lexikon&op=content&tid=8630">ni ] [ ef="module.php?name=Lexikon&op=content&tid=8675">no ] [ ef="module.php?name=Lexikon&op=content&tid=8760">ns ] [ ef="module.php?name=Lexikon&op=content&tid=8820">O ] [ ef="module.php?name=Lexikon&op=content&tid=8964">om ] [ ef="module.php?name=Lexikon&op=content&tid=9014">op ] [ ef="module.php?name=Lexikon&op=content&tid=9093">optimise ] [ ef="module.php?name=Lexikon&op=content&tid=9097">option ] [ ef="module.php?name=Lexikon&op=content&tid=9204">pa ] [ ef="module.php?name=Lexikon&op=content&tid=9457">pe ] [ ef="module.php?name=Lexikon&op=content&tid=9478">Pentium ] [ ef="module.php?name=Lexikon&op=content&tid=9494">perf ] [ ef="module.php?name=Lexikon&op=content&tid=9550">ph ] [ ef="module.php?name=Lexikon&op=content&tid=9651">pl ] [ ef="module.php?name=Lexikon&op=content&tid=9762">point ] [ ef="module.php?name=Lexikon&op=content&tid=9908">pr ] [ ef="module.php?name=Lexikon&op=content&tid=9920">predecessor ] [ ef="module.php?name=Lexikon&op=content&tid=9995">process ] [ ef="module.php?name=Lexikon&op=content&tid=10001">processor ] [ ef="module.php?name=Lexikon&op=content&tid=10144">pt ] [ ef="module.php?name=Lexikon&op=content&tid=10253">query ] [ ef="module.php?name=Lexikon&op=content&tid=10319">range ] [ ef="module.php?name=Lexikon&op=content&tid=10321">RapidCAD ] [ ef="module.php?name=Lexikon&op=content&tid=10364">rc ] [ ef="module.php?name=Lexikon&op=content&tid=10385">re ] [ ef="module.php?name=Lexikon&op=content&tid=10767">ro ] [ ef="module.php?name=Lexikon&op=content&tid=10887">ru ] [ ef="module.php?name=Lexikon&op=content&tid=10892">run ] [ ef="module.php?name=Lexikon&op=content&tid=10918">S ] [ ef="module.php?name=Lexikon&op=content&tid=10922">sa ] [ ef="module.php?name=Lexikon&op=content&tid=10959">sam ] [ ef="module.php?name=Lexikon&op=content&tid=11009">SC ] [ ef="module.php?name=Lexikon&op=content&tid=11150">se ] [ ef="module.php?name=Lexikon&op=content&tid=11281">set ] [ ef="module.php?name=Lexikon&op=content&tid=11376">si ] [ ef="module.php?name=Lexikon&op=content&tid=11524">SL ] [ ef="module.php?name=Lexikon&op=content&tid=11525">sl ] [ ef="module.php?name=Lexikon&op=content&tid=11651">so ] [ ef="module.php?name=Lexikon&op=content&tid=11790">spec ] [ ef="module.php?name=Lexikon&op=content&tid=11934">st ] [ ef="module.php?name=Lexikon&op=content&tid=12109">struct ] [ ef="module.php?name=Lexikon&op=content&tid=12133">su ] [ ef="module.php?name=Lexikon&op=content&tid=12155">successor ] [ ef="module.php?name=Lexikon&op=content&tid=12246">sy ] [ ef="module.php?name=Lexikon&op=content&tid=12312">system ] [ ef="module.php?name=Lexikon&op=content&tid=12359">T ] [ ef="module.php?name=Lexikon&op=content&tid=12588">th ] [ ef="module.php?name=Lexikon&op=content&tid=12721">to ] [ ef="module.php?name=Lexikon&op=content&tid=12787">tr ] [ ef="module.php?name=Lexikon&op=content&tid=12939">tw ] [ ef="module.php?name=Lexikon&op=content&tid=12986">ua ] [ ef="module.php?name=Lexikon&op=content&tid=13008">ug ] [ ef="module.php?name=Lexikon&op=content&tid=13030">um ] [ ef="module.php?name=Lexikon&op=content&tid=13146">up ] [ ef="module.php?name=Lexikon&op=content&tid=13175">us ] [ ef="module.php?name=Lexikon&op=content&tid=13252">va ] [ ef="module.php?name=Lexikon&op=content&tid=13274">var ] [ ef="module.php?name=Lexikon&op=content&tid=13310">ve ] [ ef="module.php?name=Lexikon&op=content&tid=13891">X ] [ ef="module.php?name=Lexikon&op=content&tid=13922">x86 ]
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