Apple unveils M1, its first system-on-a-chip for portable Mac computers

Re:Apple unveils M1, its first system-on-a-chip for portable... by francoisLabonte on Tuesday November 10, 2020 @02:44PM (#25050751)

My guess is that they are using up to 2 HBM2 memory stacks (from the picture). Each is limited to 8GB . If they were to go to HBM2e in M2 they could get up to 2x24GB. The biggest advantage of HBM is lower power per bit as the signals are all on the package running at a lower frequency.

The memory market is getting fragmented with Nvidia having seemed to moved from HBM2 to GDDR6X (Micron being only supplier). LPDDR super low power (cell phones) and DDR4/5 for rest of market...

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Re:Apple unveils M1, its first system-on-a-chip for portable... by francoisLabonte on Tuesday November 10, 2020 @04:47PM (#25052434)

After more consideration it is much more likely to be LPDDR4X just like the recently released A14 chip. It would seem unlikely that they would have developed a brand new memory interface.

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Re:Apple unveils M1, its first system-on-a-chip for portable... by sroussey on Tuesday November 10, 2020 @03:42PM (#25051634)

Are they using HBM2 memory? I keep waiting for AMD to do that in a cpu package.

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