DDR400 Kills Rambus: Shooting Star SiS 648 for P4

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Comparison: Chipsets For Pentium 4

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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

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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.