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Comparison Of All Pentium 4 Chipsets

SiS Kicks Off: 10 Motherboards With The 645 Chipset and DDR333
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Chipset Intel 850 Intel 845D Intel 845 VIA P4X266A VIA P4X266 SiS 645
Launch Date Jan-01 Dec-01 Jul-01 Dec-01 Aug-01 Nov-01
CPU Platform Socket 423/478 Socket 478 Socket 423/478 Socket 478 Socket 423/478 Socket 478
Processors Supported Intel Pentium 4 Intel Pentium 4 Intel Pentium 4 Intel Pentium 4 Intel Pentium 4 Intel Pentium 4
Multiprocessor Support yes no no no no no
Chipset Northbridge Intel KC82850 Intel 82845 Intel 82845 VIA P4X266A VIA VT8753 SiS 645
Chipset Southbridge Intel 82801 BA Intel 82801 BA Intel 82801 BA VIA VT8233CE VIA VT8233 SiS 961
Front Side Bus Clock 100/133 MHz 66/100/133 MHz 66/100/133 MHz 66/100/133 MHz 100 MHz 100/133 MHz
Memoryclock 400 MHz 100/133 MHz DDR-SDRAM 100/133 MHz SDRAM 100/133 MHz DDR-SDRAM 100/133 MHz SDR/DDR 100/133 /166 MHz DDR-SDRAM
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 180 MHz up to 200 MHz up to 180 MHz
Max. Number of DIMM Slots 4 3 4 3 4 3
Max. Memory Expansion 2048 MB 2048 MB 2048 MB 3072 MB 4096 MB 3072 MB
SDRAMSupport no no yes no yes yes
DDR SDRAM Support no yes no yes yes yes
VC SDRAM Support no no no no yes no
RIMM-Support (Rambus) yes no no no no no
Dual-RIMM-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 no
Number of USB Ports 4 4 6 6 6 6
USB 2.0 no no yes yes no yes
Max. Number of PCI Slots 6 6 6 6 5 6
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
ACPI Features yes yes yes yes yes yes
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