P5wdg2-ws-pro-0905 〈Premium〉

Up to 8GB of DDR2 800/667/533 MHz RAM (ECC and non-ECC supported)

Because official support stopped, third-party "modded" versions of BIOS 0905 exist to add microcode for 45nm processors, though these carry risks of system instability. ⚠️ Critical User Advice P5WDG2-WS-PRO-0905

Are you looking to the CPU on this board, or are you troubleshooting a boot issue ? ASUS P5WDG2 WS Professional - The Retro Web Up to 8GB of DDR2 800/667/533 MHz RAM