Model A1181: 1.83, 2, 2.1, 2.13, 2.16, 2.2, or 2.4 GHz Core 2 Duo processor

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What defines a "Penryn" MacBook A1181 board?

Seemingly stupid question, but what exactly makes an A1181 board a Penryn board? Is it the 3-wall inverter connector and the "straight" heatsync (as opposed to the "curved" heatsync)? I assume the 820-2279-A model (2/2.1/2.2/2.4GHZ line) is Penryn, but I've never been 100% sure.

Or is a "Penryn" board actually the even later A1181 model that has the smaller optical drive connector?

Anyway, just trying to make sense of all the vague and idiotic labels out there that are thrown around constantly but never clearly defined. I always just stick to the model numbers to be safe, but it would be really nice to be able to tell customers, "Yes, this is Penryn!"

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I know that "Penryn" is the type of processor, but what makes a Penryn board identifiable? It's not specifically the processor that anyone cares about in functional terms -- it's whether the board will fit, and whether it has the right what are these characteristic that are specific to Penryn boards?


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The Penryn is the processor in it which has the 45nm architecture. It should also have a different chip socket.


Connectors for Heatsink sensors are flat 4 pin


I did some further investigation on the A1181, as you know my background is PC and I am not well versed in MAC, yet.

The single 4 pin wire off the heatsink is the key. These are the straight heatsinks, have a larger fan, heatsinks are Penryn. (I believe these are 4 wall.)

The curved, 3 wall heatsink, smaller fan with two 2 pin wires is not.

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Thanks, and those are great resources! I guess my question (to be clearer) is more about how to easily identify an A1181 Penryn MacBook board by looking at it. Along with the processor itself, I suspect there are traits specific to Penryn boards, possibly such as the straight heatsync, 3-wall inverter connector, etc. I'm basically looking for the simplest method of identifying a Penryn board, since obviously they don't have a big "Penryn" sticker right on the front. It would be interesting to know if there's a way to tell from the OS as well.


So it is a number on the processor, like T8100, that absolutely indicates whether it's Penryn or not? T7200, 7300, 7400, 7500?


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It has to do with the 45 nanometer process. Intel has historically named integrated circuit (IC) development projects after geographical names of towns, rivers or mountains near the location of the Intel facility responsible for the IC. For details on this and all the names look here:

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