|Last January Intel introduced the Celeron M 520, a low-cost entry-level mobile CPU based on Core microarchitecture. At $134 the CPU was relatively low-cost from a consumer point of view -- with scheduled price drop to $107 on April 22nd. Under the hood the CPU featured a "fully fledged" Merom core with the current B2 stepping. It's safe to assume that these feature at least 2 cores and 2MB L2 Cache -- given the processors have different manufacturing lines for 4MB and 2MB models.|
In the recent PCN 107423-00 Intel notified its customers about a stepping change for Celeron M 520. Although a Celeron M 530 was introduced on March 25th at $134, in the PCN this model is not mentioned at all. Intel informs that said model will transition from a Merom B2 stepping core to a new Merom-L core with A stepping, which will be available starting the 1st of June.
The only change for customers is a different CPUID which requires a BIOS update along with a microcode update in oder to support the CPU correctly. Besides Intel notes that "Merom-L A stepping material has minor die size decrease due to manufacturing optimizations to
increase product availability".