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Would M1 scale up with 64GB or even 1.5TB of RAM? It's not possible to have that much memory integrated; what would be the performance difference in that case?
by bitL 6y ago
Would M1 scale up with 64GB or even 1.5TB of RAM? It's not possible to have that much memory integrated; what would be the performance difference in that case?
- hajile 6y agoSamsung started shipping 16GB LPDDR5 modules last year. They are supposedly 1.5x the speed and 20% lower power. Double the stacks from 2 to 4 and moving from 8GB to 16GB gives 64GB. The two extra channels and extra performance gives something like 3x the bandwidth at only a bit more power. That seems perfect for feeding more cores and a larger GPU. I’d love to see a move toward 512-bit HBM3. It seems like the perfect compromise. It doesn’t need expensive silicon interposers and offers decent latency while still having a lot of bandwidth. HBM2e uses about half the power as GDDR6 for the same bandwidth (I don’t know about HBM3 power numbers)