This table lists all chipsets for the Socket 478 platform. Along with the ones that are soon to come, there is a total of 12 different Pentium 4 chipsets from Intel, SiS and VIA. With regard to the best performance, the Intel chipsets are positioned quite well, while VIA, which, to be exact, does not have a P4 bus license, is at a bit of a disadvantage with its P4X component. The development at SiS is interesting: the manufacturer has a license and is working on SiS 648, which is the first of its chipsets to use a Rambus memory interface.
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Chipset
Intel 850E
Intel 845G
Intel 845E
SiS 648
SiS 645DX
SiS 645
Introduction
May 2002
May 2002
May 2002
November 2002
March 2002
November 2001
Processor Plattform
Socket 478
Socket 478
Socket 478
Socket 478
Socket 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 KC82850E
Intel RG82850E
Intel RG8245EES
SiS 648
SiS 645DX
SiS 645
Chipset Southbridge
Intel 82801 BA "ICH2"
Intel 82801 DB "ICH4"
Intel 82801 DB "ICH4"
SiS 961
SiS 961
SiS 961
Front Side Bus Clock
100/133 MHz
100/133 MHz
100/133 MHz
100/133 MHz
100/133 MHz
100 MHz
Memory Clock
400 MHz/533 MHz
100/133/166 MHz
100/133 MHz
400/533/600 MHz
100/133/166/200 MHz
100/133 MHz
Asynchronous Memory Clock
yes
yes
yes
yes
yes
yes
max. # DIMM-Slots
4
3
3
4
3
3
max. Memory
2048 MB
3072 MB
3072 MB
2048 MB
3072 MB
3072 MB
SDRAM Support
no
yes
yes
no
yes
yes
DDR SDRAM Support
no
yes
yes
yes
yes
yes
VC SDRAM Support
no
no
no
no
no
no
RDRAM Support
yes
no
no
no
no
no
Dual Channel RDRAM Support
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
no
Max. # USB
4
6
6
4
4
4
USB 2.0
no
yes
yes
yes
no
no
Max.# PCI Slots
6
6
6
6
6
6
Integrated Graphics
no
yes
no
yes
yes
yes
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
no
ACPI Features
yes
yes
yes
yes
yes
yes
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Chipset
Intel 850
Intel 845D
Intel 845
VIA P4X266
VIA P4X266A
Introduction
January 2001
December 2001
July 2001
August 2001
December 2001
Processor Plattform
Socket 423/478
Socket 478
Socket 423/478
Socket 423/478
Socket 478
Supported CPU
Intel Pentium 4
Intel Pentium 4
Intel Pentium 4
Intel Pentium 4
Intel Pentium 4
Chipset Northbridge
Intel KC82850
Intel 82845
Intel 82845
VIA VT8753
VIA P4X266A
Chipset Southbridge
Intel 82801 BA "ICH2"
Intel 82801 BA "ICH2"
Intel 82801 BA "ICH2"
VIA VT8233
VIA VT8233A
Front Side Bus Clock
100/133 MHz
66/100/133 MHz
66/100/133 MHz
100 MHz
100 MHz
Memory Clock
400 MHz
100/133 MHz
100/133 MHz
100/133 MHz
100/133 MHz
Asynchronous Memory Clock
yes
yes
yes
yes
yes
max. # DIMM-Slots
4
3
4
4
4
max. Memory
2048 MB
2048 MB
2048 MB
4096 MB
3072 MB
SDRAM Support
no
no
yes
yes
yes
DDR SDRAM Support
no
yes
no
yes
yes
VC SDRAM Support
no
no
no
yes
yes
RDRAM Support
yes
no
no
no
no
Dual Channel RDRAM Support
yes
no
no
no
no
Ultra-DMA/33/66/100
yes/yes/yes
yes/yes/yes
yes/yes/yes
yes/yes/yes
yes/yes/yes
Ultra-DMA/133
no
no
no
no
yes
Max. # USB
4
4
4
6
6
USB 2.0
no
no
yes
no
yes
Max.# PCI Slots
6
6
6
5
5
Integrated Graphics
no
no
no
no
no
AGP 1x / 2x / 4x
yes / yes / yes
yes / yes / yes
yes / yes / yes
yes / yes / yes
yes / yes / yes
AGP 8x
no
no
no
no
yes
ACPI Features
yes
yes
yes
yes
yes
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