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A comment on Apple’s new M1 Pro and M1 Max processors. Parent comment

Re:Apple’s new M1 Pro and M1 Max processors by floatboth on Monday October 18, 2021 @09:01PM (#28913776)
HBM isn't just "soldered near", it's connected through a silicon interposer rather than a PCB.

Also we know it's not HBM because the word "LPDDR5" was literally on the slides :)

> just make many parallel channels of it

isn't that just how LPDDR is in general? It has much narrower channels than DDR so you need much more of them?

[ Parent | on HN ]
Re:Apple’s new M1 Pro and M1 Max processors by dragontamer on Monday October 18, 2021 @11:48PM (#28914650)
> isn't that just how LPDDR is in general? It has much narrower channels than DDR so you need much more of them?

Well yeah. But 400GBps is equivalent to 16x DDR4 channels. Its an absurdly huge amount of bandwidth.

[ Parent | on HN ]