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This article provides a list of motherboard chipsets made by Intel, divided into three main categories: those that use the PCI bus for interconnection (the 4xx series), those that connect using specialized "hub links" (the 8xx series), and those that connect using PCI Express (the 9xx series). The chipsets are listed in chronological order.
Pre-chipset situation
An earlier chipset support for Intel 8085 microprocessor can be found at MCS-85 family section.
Early IBM XT-compatible mainboards did not yet have a chipset, but relied instead on a collection of discrete TTL chips by Intel:[1]
- the 8284 clock generator
- the 8288 bus controller
- the 8254 programmable interval timer
- the 8255 parallel I/O interface
- the 8259 programmable interrupt controller
- the 8237 DMA controller
Early chipsets
To integrate the functions needed on a mainboard into a smaller number of ICs, Intel licensed the ZyMOS POACH chipset for its Intel 80286 and Intel 80386SX processors (the 82230/82231 High Integration AT-Compatible Chip Set). The 82230 covers this combination of chips: 82C284 clock, 82288 bus controller, and dual 8259A interrupt controllers among with other components. The 82231 covers this combination of chips: 8254 interrupt timer, 74LS612 memory mapper and dual 8237A DMA controller among with other components. Both set were available US$60 for 10 MHz version and US$90 for 12 MHz version in quantities of 100.[2] This chipset can be used with an 82335 High-integration Interface Device to provide support for the Intel 386SX.[3][4]
List of early Intel chipset includes:[5][6]
- 82077AA CHMOS Single-Chip Floppy Disk Controller for the 32-bit systems.[7][8]
- 82091AA EISA/ISA - Advanced Integrated Peripheral (AIP), includes: floppy disk controller, 2× UARTs, parallel port, IDE controller, oscillator, etc.[9]
- 82310 MCA family chipset - announced in April 1988.[10] This chipset also supports the 80386SX based machines as well.[3] Which it does includes:[4][11]
- 82306 Local Channel Support Chip
- 82307 DMA Controller/Central Arbiter
- 82308 Micro Channel Bus Controller
- 82309 Address Bus Controller
- 82706 VGA Graphics Controller
- 82350 EISA - announced in September 1988.[12][13] This chipset supports the i486 microprocessor. It was expected to be available in the later half of 1989.[14]
- 82311 MCA - announced in November 1988.[15][16] Includes: 82303 and 82304 Local I/O Channel Support Chips, 82307 DMA Controller/Central Arbiter, 82308 Micro Channel Bus Controller, 82309 Address Bus Controller, 82706 VGA Graphics Controller, 82077 Floppy Disk Controller.[4][13]
- 82320 MCA - announced in April 1989.[17] This chipset supports the i486 microprocessor. It was expected to be available in the later half of 1989.[14]
- 82340SX PC AT - announced in January 1990, it is the Topcat chipset licensed from VLSI.[18]
- 82340DX PC AT - announced in January 1990, it is the Topcat chipset licensed from VLSI.[18]
- 82350DT EISA - announced in April 1991.[19]
- 82360SL - announced in October 1990.[20] It was a chipset for the mobile 80386SL and 80486SL processors. It integrated DMA controller, an interrupt controller PIC, serial and parallel ports, I/O Control, NMI, Real Time Clock, Timers and power-management logic for the processor. This chipset contains 226,000 transistors using the one-micron CHMOS IV technology. It was available for US$45 in quantities of 1,000.[8]
- 82365SL - PC Card Interface Controller. This support PCMCIA 2.0 standard using the Exchangeable Card Architecture which supports both I/O and memory ExCA-compliant cards. It uses the Intel386SL power-management features. This was available for US$35 in samples of quantities of 1,000-unit.[21]
- 82380 - High Performance 32-Bit DMA Controller with Integrated System Support Peripherals. This chipset has 20-level programmable interrupt controller a superset of Intel's 82C59 PIC. It also has four (x4) 16-bit programmable internal timers which its superset Intel's 82C54 PIT. It also has built-in DRAM refresh controller as well. It is available for US$149 and US$299 for 16 MHz and 20 MHz respectfully in quantities of 100.[22] The Intel M82380 met under MIL-STD-883 Rev. C standard. This military device was tested which includes temperature cycling between -55 and 125 °C, hermeticity and extended burn-in. This military version can have transfer rate of 32 Mbytes per seconds at 16 MHz. This military version were available in 132-lead CPGA and 164-lead CQPK. This military version were available for US$520 100-unit of quantities for the PGA version.[23]
- 82384 - Clock Generator. The available version for US$15 in quantities of 100.[24]
- 82385 - High Performance 32-Bit Cache Controller.[22] This chipset was introduced in February 1987. It was available for 20 MHz version.[25] There is 33 MHz version available for the 386DX processor.[26] Paired with 33 MHz 386 CPU and 64-Kbyte memory subsystem, it performed up to 7.8 MIPS.[27] There is 82385SX version for the 386SX microprocessor.[26]
- 82395DX - High Performance Smart Cache. This chipset contains internal 16-Kbye of SRAM and 1,000 cache tags. This controller supports up to 128-Kbytes of cache memory subsystem which it features four-way set associativity; a 16-byte line size; a four, double-word write buffer; and concurrent line-buffer caching. This also support write-buffer memory update protocol and maintains cache coherency during bus snooping. Paired with 33 MHz 386 CPU and the controller can perform up to 8.3 MIPS. This was available in 196-pin PQFP for US$90 and $109 for 25- and 33-MHZ version in quantites of 1000 respectively.[27] There is Intel 82395SX version which it contains 8-Kbyte of cache memory for the 80386SX microprocessor family which it performs as much as 7% better than the 82385SX version. It was available for US$44 in quantities of 1000 units housed by 132-pin PQFP. The Intel 82396SX version contains 16-Kbyte of cache memory which were available in second quarter of 1991.[28]
4xx chipsets
80486 chipsets
| Chipset | Code Name | North Bridge | sSpec Number | South Bridge | Release Date | Processors | FSB | SMP | Memory types | Max. memory | Max. cacheable | Parity/ECC | L2 Cache Type | PCI support |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 420TX | Saturn | CDC (82424TX), DPU (82423TX) | SZ839
SZ868 |
SIO (System I/O) | November 1992 | 5 V 486 | Up to 33 MHz | No | FPM | 128 MB[a] | Parity | Async. | 1.0 | |
| 420ZX | Saturn II | CDC (82424ZX), DPU (82423TX) | SZ884 | March 1994 | 5 V/3.3 V 486 | 160 MB | 2.1 | |||||||
| 420EX | Aries | PSC (82425EX) | SZ897 (PSC)
SZ898 (IB) |
IB (82426EX) | Up to 50 MHz | 128 MB | 128 MB (/w 32KB Tag Ram & 512KB L2 Cache[29] | 2.0 |
Other 80486 chipsets
- 82495DX - Cache Controller. This support zero-wait-state with two-way set associative cache with several configurable parameters. This support MESI protocol and bus snooping. It is available for US$198.[30]
- 82490DX - 32-Kbyte Dual Port Intelligent Cache SRAM. Providing second level write-back cache with dual-ported buffers and registers. It is available for US$41.[30]
Pentium chipsets
While not an actual Intel chipset bug, the Mercury and Neptune chipsets could be found paired with RZ1000 and CMD640 IDE controllers with data corruption bugs. L2 caches are direct-mapped with SRAM tag RAM, write-back for 430FX, HX, VX, and TX.
| Chipset | Code Name | Part Numbers | sSpec Number | South Bridge | Release Date | Processors | FSB | SMP | Memory types | Max. memory | Max. cacheable | Parity/ECC | L2 Cache Type | PCI support | AGP support |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 430LX | Mercury[31] | 82434LX (PCMC) 2x 82433LX (LBX) |
SZ914 (PCMC)
SZ942 (LBX) |
SIO (ISA) PCEB/ESC (EISA) |
March 1993 | P60/66 | 60/66 MHz | No | FPM | 192 MB | 192 MB | Parity | Async. | 2.0 | No |
| 430NX | Neptune[32] | 82434NX (PCMC) 2x 82433NX (LBX) |
SZ919 (PCMC)
SZ899 (LBX) |
SIO (ISA) SIO.A (DP ISA) PCEB/ESC (EISA) |
March 1994 | P75+ | 50/60/66 MHz | Yes | 512 MB | 512 MB | |||||
| 430FX | Triton[33][34] | 82437FX/JX (TSC) 2x 82438FX (TDP) |
SZ965 (A1)
SZ968 (A1) SZ969 SZ973 (A1) SZ975 (A1) SZ998 (A2) SZ999 |
PIIX | January 1995 | No | FPM/EDO | 128 MB | 64 MB | Neither | Async. / Pburst | ||||
| 430MX | Mobile Triton | 82437MX | SU036 (A1)
SU037 (A1) SU069 (B0) |
MPIIX | October 1995 | ||||||||||
| 430HX | Triton II[34][35] | 82439HX/JHX (TXC) | SU087 (A1)
SU102 (A2) SU115 |
PIIX3 | February 1996 | Yes | 512 MB | 64 MB 512 MB (w/ 11-bit tag RAM)[36] |
Both | 2.1 | |||||
| 430VX | Triton II[34][37] | 82437VX (TVX) 2x 82438VX (TDX) |
SU085 (A1)
SU116 (A2) |
60/66 MHz | No | FPM/EDO/SDRAM | 128 MB | 64 MB | Neither | ||||||