Celeron D 2.53GHz - Prescott core, 256kB L2 cache, 533MHz FSB, 90nm, socket 478.
Using a BOX cooler - socket 478 with Cu core.
Temperature of room: 0` celsius.
RAM: dual channel OCZ Enhanced Latency 2x256MB 400MHz
MB: Asus P4C800DLX.
PSU: Fortron 350W/120mm passive PFC.
HERE is validated link of OC 4.57GHz.