DDR400 Kills Rambus: Shooting Star SiS 648 for P4

Comparison: Chipsets For Pentium 4

Chipset Intel 850E Intel 845G Intel 845E SiS 648 SiS 645DX SiS 645 Intel 850
Introduction May 2002 May 2002 May 2002 July 2002 March 2002 November 2001 January 2001
Processor Plattform Socket 478 Socket 478 Socket 478 Socket 478 Socket 478 Socket 478 Socket 423/478
Supported CPU Intel Pentium 4 Intel Pentium 4 Intel Pentium 4 Intel Pentium 4 Intel Pentium 4 Intel Pentium 4 Intel Pentium 4
Chipset Northbridge Intel KC82850E Intel RG82845G Intel RG8245EES SiS 648 SiS 645DX SiS 645 Intel KC82850
Chipset Southbridge Intel 82801 BA Intel 82801 DB Intel 82801 DB SiS 963 SiS 961 SiS 961 Intel 82801 BA
Front Side Bus Clock 100/133 MHz 100/133 MHz 100/133 MHz 100/133/166 MHz 100/133 MHz 100 MHz 100/133 MHz
Memory Clock 400 MHz/533 MHz 100/133/166 MHz 100/133 MHz 100/133/166/200 MHz 100/133/166/200 MHz 100/133 MHz 400 MHz
Asynchronous Memory Clock yes yes yes yes yes yes yes
FSB-Overclocking up to 166 MHz up to 166 MHz up to 166 MHz up to 200 MHz up to 166 MHz up to 133 MHz up to 133 MHz
max. # DIMM-Slots 4 3 3 3 3 3 4
max. Memory 2048 MB 3072 MB 3072 MB 2048 MB 3072 MB 3072 MB 2048 MB
SDRAM Support no yes yes no yes yes no
DDR SDRAM Support no yes yes yes yes yes no
VC SDRAM Support no no no no no no no
RDRAM Support (Rambus) yes no no no no no yes
Dual RDRAM Support (Rambus) yes no no no no no yes
Ultra-DMA/33/66/100 yes/yes/yes yes/yes/yes yes/yes/yes yes/yes/yes yes/yes/yes yes/yes/yes yes/yes/yes
Ultra-DMA/133 no no no yes no no no
Max. # USB 4 4 4 6 4 4 4
USB 2.0 no yes yes yes no no no
Max.# PCI Slots 6 6 6 6 6 6 6
Integrated Graphics no yes no no yes yes no
AGP 1x / 2x / 4x yes / yes / yes yes / yes / yes yes / yes / yes yes / yes / yes yes / yes / yes yes / yes / yes yes / yes / yes
AGP 8x no no no yes no no no
ACPI Features yes yes yes yes yes yes yes
Chipset Intel 850 Intel 845D Intel 845 VIA P4X333 VIA P4X266 VIA P4X266A
Introduction January 2001 December 2001 July 2001 May 2002 August 2001 December 2001
Processor Plattform Socket 423/478 Socket 478 Socket 423/478 Socket 478 Socket 423/478 Socket 478
Supported CPU Intel Pentium 4 Intel Pentium 4 Intel Pentium 4 Intel Pentium 4 Intel Pentium 4 Intel Pentium 4
Chipset Northbridge Intel KC82850 Intel 82845 Intel 82845 VIA P4X333 VIA VT8753 VIA P4X266A
Chipset Southbridge Intel 82801 BA Intel 82801 BA Intel 82801 BA VIA VT8233A VIA VT8233 VIA VT8233A
Front Side Bus Clock 100/133 MHz 66/100/133 MHz 66/100/133 MHz 100/133 MHz 100 MHz 100 MHz
Memory Clock 400 MHz 100/133 MHz 100/133 MHz 100/133/166 MHz 100/133 MHz 100/133 MHz
Asynchronous Memory Clock yes yes yes yes yes yes
FSB-Overclocking up to 133 MHz up to 166 MHz up to 180 MHz up to 200 MHz up to 180 MHz up to 180 MHz
max. # DIMM-Slots 4 3 4 4 4 4
max. Memory 2048 MB 2048 MB 2048 MB 3072 MB 4096 MB 3072 MB
SDRAM Support no no yes yes yes yes
DDR SDRAM Support no yes no yes yes yes
VC SDRAM Support no no no yes yes yes
RDRAM Support (Rambus) yes no no no no no
Dual RDRAM Support (Rambus) yes no no no no no
Ultra-DMA/33/66/100 yes/yes/yes yes/yes/yes yes/yes/yes yes/yes/yes yes/yes/yes yes/yes/yes
Ultra-DMA/133 no no no yes no yes
Max. # USB 4 4 6 6 6 6
USB 2.0 no no yes yes no yes
Max.# PCI Slots 6 6 6 5 5 5
Integrated Graphics no no no no no no
AGP 1x / 2x / 4x yes / yes / yes yes / yes / yes yes / yes / yes yes / yes / yes yes / yes / yes yes / yes / yes
AGP 8x no no no yes no yes
ACPI Features yes yes yes yes yes yes

The table above lists all the chipsets currently available for the Intel Socket 478 platform. Older chipsets with SDRAM support (e.g., Intel 845) are not included here because these chips haven't been available on the market or haven't been produced for a while.

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