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Apple announced the Retina MacBook 2015, model A1534, on March 9, 2015 to launch on April 10. It has a new unibody construction and includes an updated trackpad, keyboard, and Retina display.

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What is the chipset?

What is the chipset? (Intel H97 or Z97?) And why wasn't it revealed during tear-down?

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H97 and Z97 is made for desktops.

If i'm not mistaken, the chipset is included in the CPU package.

If you're not satisfied, you could have a look at other Core-M powered laptops on the market, to see if there's more info.

Fx. Dell Latitude 13 7000 , HP Envy X2, Lenovo Yoga 3 Pro or Asus Zenbook UX305.

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Here's a good writeup: Trusted Reviews

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If i'm not mistaken, the chipset is included in the CPU package.

MorbidMylar, you are right. I just did some research. For this Broadwell-Y, on the CPU package, there are two dice:

  1. the larger long die contains the CPU and GPU, made in a modern 14 nm process.
  2. the other smaller die (almost square) is the Platform Controller Hub (PCH) in a low-power version made in a 32 nm process. This PCH die essentially is the "chipset" and typically refered to as "Broadwell-Y PCH-LP".

Together, they form a SoC. For Broadwell-Y (TDP around 5W) and Broadwell-U (TDP around 15-23W), this SoC configuration was chosen by Intel.

For the Broadwell CPUs with Broadwell-H and up (these are desktop CPUs which may also appear in notebooks with fan-cooling), the PCH is not on the CPU package, but the chipset (=PCH) remains on the mainboard in a Z97 or H97, or HM87 or HM97. In those cases, where there is a second die on the CPU package for these desktop CPUs, it is the eDRAM of the IrisPro graphics GT3e.

Used sources:

http://arstechnica.com/gadgets/2014/08/b...

https://software.intel.com/sites/default...

http://www.notebookcheck.com/Intel-Broad...

Actually all these concepts had been part of Haswell CPUs as well.

http://scr3.golem.de/screenshots/1402/En...

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