Intel notified its customers that it will change the marking of all its currently produced Pentium 4 and Celeron processors in Socket 478 packaging. Those of you who deal with new microprocessors constantly should know about the changes and be ready to receive the new chips after the 12^th of June.

Above is the current marking, below is the new marking.

Intel will be making the following changes on the Integrated Heat Spreader mark for all Pentium 4 processors and Celeron processors on 478-pin FC-PGA package:

• Size reduction and relocation of the 2D matrix mark;
• Removal of the four-digit serial number from the Finish Processing Order (FPO) lot number. The FPO lot number will remain.
• Addition of the Assembly Test Product Order (ATPO) lot number and a four-digit serial number beside the 2D matrix mark. The new ATPO lot number/four-digit extension combination has the same number of characters as the current FPO lot number/four-digit extension combination and can be used as a unique identifier.