Let's have a look on Gigabyte EP45C-DS3R, a mainstream socket 775 motherboard for Intel processors, targeted mainly to Core 2 Duo and Core 2 Quad processors.
This motherboard is based on Intel P45 chipset, which replaced P35 on the mainstream market. Currently the high-end chipset for Intel socket 775 processors is X48, while for Core I7 Processors (Socket 1366), X58 chipset is the top-of-the-line chipset. @ Hardware Secrets
