What is the Intel AT80574KJ041N processor?

The Intel AT80574KJ041N is a model number for the Intel Xeon E5405 processor. It features four cores, operates at a base clock speed of 2.00 GHz, and is designed for use in server environments. Key specifications include:

• 4 cores and 4 threads
• 2.00 GHz base clock speed
• 12 MB L2 cache
• 1333 MHz front-side bus (FSB)
• Thermal Design Power (TDP) of 80 watts
• Socket LGA 771​