Intel is preparing to launch new versions of Clarkdale-based processors in the Core i3 and Core i5 series. The processors that today use the so called C2 stepping will be updated to the new K0 stepping starting October 16th, which is already available with some models.

Intel introduced the K0 stepping with the launch of its latest updates to the processor series and mong others Core i3-550/560 and Core i5-665K/680 already has the new stepping, but by the end of October also the budget models will get an upgrade.


Beside an optimized manufacturing technology and hopefully some better overclocking potential the following has changed since C2.

  • New S-spec and MM numbers for the converting products
  • Extended CPUID will change from 0x00020652 to 0x00020655
  • Host RevID will change from 0x12 to 0x18
  • K0 stepping package is pin compatible with C2 stepping package
  • Adds Processor Context ID (PCID) support

Prices will be the same, but to make sure you get the new K0 stepping look for the product codes listed above.


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