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What about Apple's M-series chips, which have on-die RAM? Is that RAM significantly more expensive per GB due to the more expensive process? (It's certainly e
by samcheng 3y ago
What about Apple's M-series chips, which have on-die RAM? Is that RAM significantly more expensive per GB due to the more expensive process?
(It's certainly exorbitantly expensive for retail consumers at $200 for an 8 GB RAM upgrade on a Macbook!)
- wmf 3y agoApple does not have on-die RAM. The SoC is a normal logic die and the RAM is regular DRAM.
- samcheng 3y agoAh - I see, the DRAM is literally BGA'd right next to the die. So that $200 upcharge is mostly profit... Thank you!
- vbezhenar 3y agoIt's called "package on package". The RAM is different chip, however it's located very close to the CPU chip and both are under a single cover. The end result is a "package". I think that GPUs use similar approach.
- RF_Savage 3y agoAMD Vega used HBM next to the GPU die, but most GPU manufacturers are now back to discrete chips on the GPU circuit board.