This is a PowerMac G5 original logic board dual 1.8GHz. It is advisable to only swap like for like with these logic boards.

You will need to extract the EEE code from the serial number on the logic board. This number is usually written on a white label either to the left of the PCI graphics card slot, or behind the central fan in the bottom compartment. The EEE number consists of the 3 digits before the last number. (eg: XXXXXXXEEEX) original has an EEE code of QEJ