Motherboard manufacturer's name: ASUS P5LP-LE
Socket: 775
Supports Pentium D (Smithfield) up to 3.2 GHz and Pentium4 (Prescott) up to 580 and 670
If it is one of those processors the Smithfield or Prescott and most probably it's a Prescott it will work.
But you need to update the BIOS to the last available one......