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Isn’t this what Apple is doing with their M-chips?
by larsnystrom 4y ago
Isn’t this what Apple is doing with their M-chips?
- krasin 4y agoApple is using HBM2 ([1]) memory, pioneered by AMD for their GPUs. Essentially, yes - it's that, placing memory really close to compute and making a lot of channels for higher bandwidth. 1. https://en.wikipedia.org/wiki/High_Bandwidth_Memory https://en.wikipedia.org/wiki/High_Bandwidth_Memory
- deleted 4y ago[deleted]
- rys 4y agoThey use commodity LPDDR4X or LPDDR5 depending on SKU, for M1 and M2.
- krasin 4y agoThanks! I missed that.
- skavi 4y agouh no they’re not lmao. unless you’re talking about very particular intel machines no one cares about anymore.
- numpad0 4y agoHBM is RAM chip stacked on CPU chip, not an integral CPU+RAM on a single die.
- evancox100 4y agoNo, in classic HBM multiple RAM dies are stacked on top of each other, but they sit next to the CPU, not on top. Edit: well typically it would be a GPU not a CPU.
- kcb 4y agoApple marketing made it sound like they were doing something special with RAM on their M socs. Really they mainly improved packaging form factor with run of the mill LPDDR5. It's questionable if this really does much for performance as the M socs still have worse memory latency than Intel and AMD chips.
- krasin 4y agoThank you. I indeed fell for Apple marketing.