CPU Intel Celeron M 550 - 2.00/1M/533 - 2GHz for HP Compaq 6820s General information CPU / Microprocessor Processor number ? Frequency (GHz) ? Bus speed (MHz) ? Clock multiplier ? 478-pin Micro-FCPGA Architecture / Microarchitecture / Other Manufacturing technology (microns) L2 cache size (MB) ? EM64T technology ? Execute disable bit ? Core voltage (V) ? Home temperatures (°C) ? Thermal Design Power (Watts) ? Retested at the IT laboratory USED BUT TESTED AND PERFECTLY WORKING!!!!!!!! Click on "See seller's other items" there are interesting items!! For any information don't hesitate to contact me!! If you want faster shipping or have agreements with couriers, contact me. Local collection is possible. Anyone who does not accept these conditions is asked not to purchase