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ewu

macrumors regular
Original poster
Apr 14, 2020
113
74
as we know, unified memory are integrated with CPU and GPU into a SOC chip,

I wonder how apple silicon could handle 128GB ram and 1.5TB ram,

it will be larger chip than M1 max.
 
128GB is easy, M1 Max/Pro is designed with multi die and macOS has a lot of multi-die reference. We can have 128GB with 2 M1 Max.

1.5 TB is harder, stacking that much DRAM modules on package does not sound ideal to me. Perhaps we would see multi-layer RAM instead?
 
128GB is easy, M1 Max/Pro is designed with multi die and macOS has a lot of multi-die reference. We can have 128GB with 2 M1 Max.

1.5 TB is harder, stacking that much DRAM modules on package does not sound ideal to me. Perhaps we would see multi-layer RAM instead?
But how well can the chips do multi chip / socket? and what is chip to chip / off chip IO like?

can they have ram slots as an kind of L4 ram disk or maybe an slower then main system ram ram swap disk?
 
I have a feeling it will be 128GB or maybe 256GB of Unified Memory and the rest will be "legacy slotted RAM" type of setup.
 
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