I found out that mysterious chips are loaded when disassembling the iMac Pro apart

The strongest spec in Apple history released on December 14, 2017 "iMac Pro"As well as its price, chips and memory installed in it are also amazing. Although such iMac Pro is you are equipped with T2 chip of custom silicon for the next generation Mac, you have it made clear that is on the logic board are equipped with applications unknown mystery of the chip to the other.

iMac Pro Teardown - iFixit
https://www.ifixit.com/Teardown/iMac+Pro+Teardown/101807

Mystery Apple chip discovered in iMac Pro teardown not A10 Fusion coprocessor
http://appleinsider.com/articles/18/01/02/imac-pro-teardown-finds-mystery-apple-chip-that-could-be-a10-fusion-coprocessor

The familiar iFixit by disassembling various digital terminals into pieces separates up to 1.5 million yen or more depending on the compositionBreak apart iMac Pro apartI am discovering the mysterious chip "338S00268" on the logic board in the disassembly work.

At the beginning of iFixit,OwasaIt seems that you thought that the same A10 Fusion chip as iPhone 7 was installed as it was being done. However, since the "338S00268" chip is about 7.4 mm on each side and smaller than the A10 Fusion chip, I guess that it is an IC for power management that Apple originally developed.

"338S00268" chip whose purpose is unknown is in the orange frame part. In the red frame part is a custom silicon T2 chip,SMCIn addition to the camera, audio control, SSD controller, Secure Enclave image signal processing, hardware encryption engine, etc. are equipped.


Before iMac Pro was released, developer Steve Troughton - Smith analyzed BridgeOS 2.0, and as a result iMac Pro calls "Hey Siri" to support voice assistant Siri calling function, I predicted that it would be equipped with the A10 Fusion chip. Recent Apple custom chipsPerformance comparable to PC chip, It will increase the credibility of this prediction that in the near future Mac will be equipped with iOS chip.

More info & amp; download here: I am looking for the iMac Pro's ARM coprocessor is arm 64 Seams to handle the macOS boot & amp; security process, as expected; iMac Pro lets Apple experiment with tighter control without the rest of the userbase freaking out.https://t.co/wmbNeVSEZX

- Steve Troughton-Smith (@ stroughtonsmith)November 18, 2017

However, when actually released, iMac Pro did not support "Hey Siri". Therefore, we can see that this mysterious "338S00268" chip was installed for other uses, but the actual use is unknown.

In addition, iFixit has discovered that the standard 288 pin DDR4 ECC RAM is used for memory (RAM) while disassembling iMac Pro apart, point out that RAM can be expanded from here. Also, although the CPU seems to be a custom made for iMac Pro, it is not soldered, so it says "Theoretically CPU upgrade is also possible".


However, GPU is soldered on the logic board and it is said that it is impossible to exchange. Although iFixit says "This is a major drawback", we are trying to choose wisely the configuration at the time of purchase.

In addition, iFixit, which decomposed iMac Pro apart, said that "(at iMac Pro) Apple has abandoned its modularity from the iMac Retina 5K display model," and how to connect the power supply to the logic board is "from the iMac Retina 5K display model It is very close to what I saw on Mac Pro. "