GEMINI user manual
Issue D
42
GEMINI chipset
The GEMINI chipset is based on the Intel 945GME graphics and memory controller hub
and ICH7-M IO controller hub components.
Graphics and Memory Controller Hub
The 945GME Graphics and Memory Controller Hub (GMCH) contains four main
components:
•
An FSB interface to the Intel Core Duo/Core Solo processor.
•
A system memory interface to DDR2 SDRAM.
•
A hub interface to the IO controller hub (ICH7-M).
•
An Integrated Graphics Device.
The GMCH supports the new generation of Intel processors with a front side bus (FSB)
frequency of 533/667MHz. See the
section on the previous page for details of
processor options.
Memory interface
The memory interface on the GEMINI board provides support for two non-ECC only
DDR2 (Double Data Rate) SDRAM 240-pin 1.8V unbuffered DIMMs (Dual Inline Memory
Module). Speeds up to PC5400 (533/667MHz) are supported with memory up to 3GB of
capacity. The BIOS automatically reads the parameters of the inserted memory module
via its SPD (Serial Presence Device) and configures the memory interface accordingly.
No user interaction is required.
While applying two of the same modules, dual channel technology is enabled
automatically for higher performance.
Onboard display interface
Based on Intel 945GME chipset with built-in GMA (Graphic Media Accelerator) 950
graphics, the board provides high graphic performances with high bandwidth memory
interface and dual independent pipe supporting multiple display modes. The board
provides dual display function with clone mode and extended desktop mode for CRT,
LCD, DVI and TV monitor.
