GA-945G-S3 Intel Core 2 Extreme Core 2 Duo Intel Pentium D Pentium 4 LGA775 CPU system board Manual GA-945G-S3 is a motherboard produced by GIGA-BYTE TECHNOLOGY CO., LTD. It supports Intel® Core TM 2 Extreme / Core TM 2 Duo Intel® Pentium® D / Pentium® 4 LGA775 processors.