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DDR333 for P4: 16 Boards with Intel 845G - Part I

Integrated Graphics: 3D Is Unconvincing

First, the good news: the Intel 845G offers the best on-board graphics currently available. And now for the bad news: while Intel is comparable to the GeForce 2 MX 200 (with a 64 bit memory interface) in terms of performance, our test results show a very different picture. Here, it should be mentioned that Intel's own, similar graphics chip with 175 MHz GPU and 143 MHz memory never showed up on the market. The performance values of the 845G can be briefly summed up: with 200 MHz core clock and 133 MHz memory clock in combination with DDR 266, or 166 MHz when used with DDR333, the technical foundations are not bad at all. The only restrictions are in the BIOS: a maximum of 8 MB can be assigned as 2D memory, as dictated by the shared memory concept.

If certain applications need more graphics memory, as is the case with 3D Mark 2001 SE, then the graphics driver automatically allocates more memory. Because the operating system also needs to access the system memory, the graphics performance is dampened considerably. An overview of the Intel 845G's graphics performance is shown by the three benchmark charts with Quake III and 3D Mark 2001 SE.

Comparison: Chipsets For Pentium 4

ChipsetIntel 850EIntel 845GIntel 845ESiS 648
IntroductionMay 2002May 2002May 2002July 2002
Processor PlatformSocket 478Socket 478Socket 478Socket 478
Supported CPUIntel Pentium 4Intel Pentium 4Intel Pentium 4Intel Pentium 4
Chipset NorthbridgeIntel KC82850EIntel RG82845GIntel RG8245EESSiS 648
Chipset SouthbridgeIntel 82801 BAIntel 82801 DBIntel 82801 DBSiS 961
Front Side Bus Clock100/133 MHz100/133 MHz100/133 MHz100/133 MHz
Memory Clock400 MHz/533 MHz100/133/166 MHz100/133 MHz400/533/600 MHz
Asynchronous Memory Clockyesyesyesyes
FSB Overclockingup to 166 MHzup to 166 MHzup to 166 MHzup to 200 MHz
max. # DIMM-Slots4334
max. Memory2048 MB3072 MB3072 MB2048 MB
SDRAM Supportnoyesyesno
DDR SDRAM Supportnoyesyesyes
VC SDRAM Supportnononono
RDRAM Support (Rambus)yesnonono
Dual RDRAM Support (Rambus)yesnonono
Ultra-DMA/33/66/100yes/yes/yesyes/yes/yesyes/yes/yesyes/yes/yes
Ultra-DMA/133nononoyes
Max. # USB4444
USB 2.0noyesyesyes
Max.# PCI Slots6666
Integrated Graphicsnoyesnoyes
AGP 1x / 2x / 4xyes / yes / yesyes / yes / yesyes / yes / yesyes / yes / yes
AGP 8xnononoyes
ACPI Featuresyesyesyesyes

ChipsetSiS 645DXSiS 645Intel 850Intel 845D
IntroductionMarch 2002November 2001January 2001December 2001
Processor PlatformSocket 478Socket 478Socket 423/478Socket 478
Supported CPUIntel Pentium 4Intel Pentium 4Intel Pentium 4Intel Pentium 4
Chipset NorthbridgeSiS 645DXSiS 645Intel KC82850Intel 82845
Chipset SouthbridgeSiS 961SiS 961Intel 82801 BAIntel 82801 BA
Front Side Bus Clock100/133 MHz100 MHz100/133 MHz66/100/133 MHz
Memory Clock100/133/166/200 MHz100/133 MHz400 MHz100/133 MHz
Asynchronous Memory Clockyesyesyesyes
FSB Overclockingup to 166 MHzup to 133 MHzup to 133 MHzup to 166 MHz
max. # DIMM-Slots3343
max. Memory3072 MB3072 MB2048 MB2048 MB
SDRAM Supportyesyesnono
DDR SDRAM Supportyesyesnoyes
VC SDRAM Supportnononono
RDRAM Support (Rambus)nonoyesno
Dual RDRAM Support (Rambus)nonoyesno
Ultra-DMA/33/66/100yes/yes/yesyes/yes/yesyes/yes/yesyes/yes/yes
Ultra-DMA/133nononono
Max. # USB4444
USB 2.0nononono
Max.# PCI Slots6666
Integrated Graphicsyesyesnono
AGP 1x / 2x / 4xyes / yes / yesyes / yes / yesyes / yes / yesyes / yes / yes
AGP 8xnononono
ACPI Featuresyesyesyesyes
ChipsetIntel 845VIA P4X333VIA P4X266VIA P4X266A
IntroductionJuly 2001May 2002August 2001December 2001
Processor PlatformSocket 423/478Socket 478Socket 423/478Socket 478
Supported CPUIntel Pentium 4Intel Pentium 4Intel Pentium 4Intel Pentium 4
Chipset NorthbridgeIntel 82845VIA P4X333VIA VT8753VIA P4X266A
Chipset SouthbridgeIntel 82801 BAVIA VT8233AVIA VT8233VIA VT8233A
Front Side Bus Clock66/100/133 MHz100/133 MHz100 MHz100 MHz
Memory Clock100/133 MHz100/133/166 MHz100/133 MHz100/133 MHz
Asynchronous Memory Clockyesyesyesyes
FSB Overclockingup to 180 MHzup to 200 MHzup to 180 MHzup to 180 MHz
max. # DIMM-Slots4444
max. Memory2048 MB3072 MB4096 MB3072 MB
SDRAM Supportyesyesyesyes
DDR SDRAM Supportnoyesyesyes
VC SDRAM Supportnoyesyesyes
RDRAM Support (Rambus)nononono
Dual RDRAM Support (Rambus)nononono
Ultra-DMA/33/66/100yes/yes/yesyes/yes/yesyes/yes/yesyes/yes/yes
Ultra-DMA/133noyesnoyes
Max. # USB6666
USB 2.0yesyesnoyes
Max.# PCI Slots6555
Integrated Graphicsnononono
AGP 1x / 2x / 4xyes / yes / yesyes / yes / yesyes / yes / yesyes / yes / yes
AGP 8xnoyesnoyes
ACPI Featuresyesyesyesyes

The table above lists all of the chipsets currently available for the Intel Platform (Socket 478). Older chipsets with SDRAM support (e.g., the Intel 845) are not included here, because boards with these chips are no longer produced or haven't been available on the market for a while.