engineering sample samples qualification cpu processor prozessor information mhz pictures core frequency chip packaging info ic x86 museum collection amd cyrix harris ibm idt iit intel motorola nec sgs sgs-thomson siemens ST signetics mhs ti texas instruments ulsi hp umc weitek zilog 4004 4040 8008 808x 8085 8088 8086 80188 80186 80286 286 80386 386 i386 Am386 386sx 386dx 486 i486 586 486sx 486dx overdrive 80187 80287 387 487 pentium 586 5x86 386dlc 386slc 486dx2 mmx ppro pentium-pro pro athlon duron z80 sparc alpha dec dirk oppelt
386 class ICs
386 information

The 386 was the successor to the 80286 processor and the first Intel processor with 32-bit data and address busses. It can address four gigabytes (2^32 bytes) of memory - however, 16 megabytes is a typical maximum in IBM PCs. The 386 allows multiple application programs to run at the same time (when running under 386-specific operating systems) using "protected mode".

The first IBM compatible to use the 386 was the Compaq 386, before IBM used it in high-end models of their PS/2 series.

With the 386, Intel introduced the 'DX' - 'SX' naming system. DX stands for Double-word eXternal, SX for Single-word eXternal. The SX versions therefore are lower-speed version of the 386(DX). They use a 16-bit data bus instead of a 32-bit data bus.

For more Information on x86 processors please refer to the x86 processor FAQ or CPU+Mainboard FAQ (german).
  add/correct 386 info  
34 386 chips in collection: show thumbnails
  386 DX
   Am386DX-40 variant
   Am386DX/DXL-40 (white markings)
  386 SX
 Chips and Technologies
  386 DX
   Super386 J38600DX-33
  i386 DX
   A80386-16 ΣΣ
   A80386DX-16 ΣΣ
   A80386DX-16 ΣΣ, i386 logo
   A80386-20 ΣΣ
   A80386DX-20 ΣΣ
   A80386DX-20 ΣΣ, i386 logo
   A80386DX-20 IV
   A80386DX-25 IV ΣΣ
   A80386DX-25 IV
   A80386DX-25 IV, i386 DX logo, '85
   A80386DX-25 IV, i386 DX logo, 1985 1987
   A80386DX-33 IV
   A80386DX-33 IV, i386 DX logo, '85
   A80386DX-33 IV, i386 DX logo, 1985 1987
  i386 SX
   NG80386SX-16, no logo
   NG80386SX-16 C STEP
   NG80386SX-20 C STEP
  i386 EX
  i386 SL
   KU80386SLBA-25, Engineering Sample