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In a bid to make manufacturing of Celeron M 500 CPUs economically more efficient, Intel will introduce a shrunk-down core in the near future.

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".

As the PCN only mentions a minor die size decrease it remains open whether Intel only reduced the L2 cache down to 1MB or also managed to cut off one of the two CPU cores. My bet is on L2 Cache only, as it explicitly mentions "minor" and the CPU cores in Core-based CPUs are linked kinda tightly so it would have required some sort of redesign of the chip.


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RE: Celery!
By Lonyo on 4/8/2007 4:52:13 AM , Rating: 2
Well, I'm not sure if it's still true, but IIRC some of the earlyier Celeron-M's didn't have power saving features (Speedstep) which means they are not hugely beneficial for laptops, assuming you want a decent battery life. I could be wrong though.


RE: Celery!
By StevoLincolnite on 4/8/2007 5:38:16 AM , Rating: 2
No they didn't, yet they still consumed less power than a Pentium 4-M, I used to get 3 hours out of my Acer Extensa 2300 (Celeron M 1.5ghz) And there are programs around where you can under volt them.


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