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[ The PC Guide | Systems and Components Reference Guide | Motherboard and System Devices | System Chipset and Controllers | Popular Chipsets | Sixth Generation (Pentium Pro / Pentium II Class) Chipsets ]

Comparison of Intel Sixth-Generation Chipsets

The table below contrasts Intel's Pentium Pro and Pentium II chipsets, in order to demonstrate their most important features and performance factors. The topic headers are based on the topics in the Chipset Functions and Features section.

Note: Pentium Pro and Pentium II CPUs have their secondary cache integrated into the CPU package. Therefore, cache characteristics for these machines are not dependent on the chipset and I have not included a group of chipset cache attributes below.

Group

Characteristic

Intel 450GX

Intel 450KX

Intel 440FX

Intel 440LX

Summary Information

Target Market

High-End Pentium Pro Servers

Pentium Pro Servers and Workstations

Pentium Pro / Pentium II

Pentium II

Introduced

1995

1995

1996

1997

Relative Cost

Very High

High

Moderate

High

Processor

System Bus Speeds

60, 66 MHz

60, 66 MHz

60, 66 MHz

60, 66 MHz

Processor Multipliers

2x, 2.5x, 3x

2x, 2.5x, 3x

2x, 2.5x, 3x, 3.5x, 4x, 4.5x, 5x

3.5x, 4x, 4.5x, 5x

Maximum # of Processors

Quad

Dual

Dual

Dual

Memory

Max RAM Support

8 GB

1 GB

1 GB

1 GB EDO / 512 MB SDRAM

DRAM Technology

FPM (4-Way Interleaved)

FPM (2-Way Interleaved)

FPM, EDO, BEDO

EDO, SDRAM

DRAM Packaging

SIMM

SIMM

SIMM, DIMM

SIMM, DIMM

Maximum # of SIMMs/DIMMs

!?

!?

!?

!?

Parity/ECC Support

Both

Both

Both

Both

System Timing

FPM DRAM Read Timing (60/66 MHz)

!?

!?

5-3-3-3

n/a

EDO DRAM Read Timing (60/66 MHz)

n/a

n/a

5-2-2-2

5-2-2-2

BEDO/SDRAM Read Timing (60/66 MHz)

n/a

n/a

5-1-1-1

5-1-1-1

Processor to PCI Buffers

!?

!?

!?

!?

PCI to Memory Buffers

!?

!?

!?

!?

Memory Autodetect

Yes

Yes

Yes

Yes

Peripheral and I/O Bus

PCI Bus Standard

2.0

2.0

2.1

2.1

IDE/ATA Channels

2

2

2

2

Fastest PIO Mode

4

4

4

4

Fastest DMA Mode

2

2

2

3 (DMA-33)

Independent Device Timing

Yes

Yes

Yes

Yes

PCI Bus Mastering

Yes

Yes

Yes

Yes

USB Support

Yes

Yes

Yes

Yes

AGP Support

No

No

No

Yes

Plug and Play Compliant

Yes

Yes

Yes

Yes

Power Mgmt.

APM Compliant

Yes

Yes

Yes

Yes

Note: System timings stated are "optimal" and depend on support from appropriately fast memory. Otherwise you may need to slow down the timing in your BIOS setup. See the section on memory system timing for more details.

Next: Keyboard Controller Functions


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