: LGA 775 (Supports Intel Core 2 Quad, Core 2 Duo, Pentium, and Celeron). : Intel G41 Express + ICH7.

2 x DDR3 DIMM slots, supporting up to 8GB (typically 1066/1333 MHz).

LGA 775 (Supports Intel Core 2 Quad, Core 2 Duo, Pentium, and Celeron processors). Chipset: Intel G41 North Bridge / ICH7 South Bridge. Memory: 2x DIMM slots supporting DDR3 1066/1333 MHz .

You can find the relevant documentation by searching for the complete system model Aspire X1800 ) rather than the motherboard part number: Acer Support Site : Visit the Acer Drivers and Manuals Identify Device : Enter your system’s Serial Number for the most accurate results. Download Documents : Under the "Documents" tab, look for the User Guide Service Guide