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Wando64

macrumors 68020
Original poster
Jul 11, 2013
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It seems pretty obvious that there only one type of M1 chip is being manufactured, and therefore it is likely that the 8gb option is the same M1 chip as the 16gb with 8gb deactivated.
What is stopping them from activating this memory with a software update?
 

eoblaed

macrumors 68040
Apr 21, 2010
3,088
3,202
That's a big assumption to make. Might be true, might not. Guess we'll see when the first ones ship and we get some X-rays of chip sets. Even if they do ship with the same physical chipset, I doubt it would be something as simple as a software block.
 

ondioline

macrumors 6502
May 5, 2020
297
299
It seems pretty obvious that there only one type of M1 chip is being manufactured, and therefore it is likely that the 8gb option is the same M1 chip as the 16gb with 8gb deactivated.
What is stopping them from activating this memory with a software update?
The DRAM on the SoC package is separate from the processor.
 
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bobmans

macrumors 6502a
Feb 7, 2020
598
1,751
The "M1" is a SoC package. 8GB mem models come with 8GB. The mem is on the package but not on the processor, they can easily leave it out.
 
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Deinocheirus

Suspended
Oct 5, 2020
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As hilarious as it would be for downloading more RAM to actually become a thing...no, they won't ship them that way.
 

Wando64

macrumors 68020
Original poster
Jul 11, 2013
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This pretty much. When making the SoC package, all they have to do is use 4GB modules vs 8GB.
Maybe. But this would make sense only if there is a definite cost difference between the two.
I doubt that’s the case.
 

Wando64

macrumors 68020
Original poster
Jul 11, 2013
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As hilarious as it would be for downloading more RAM to actually become a thing...no, they won't ship them that way.

I should patent the concept.
But then again I am sure they would prefer to sell a new Mac rather than allow for upgrades one way or another.
 

ondioline

macrumors 6502
May 5, 2020
297
299
Maybe. But this would make sense only if there is a definite cost difference between the two.
I doubt that’s the case.
You doubt that 8GB of DRAM is cheaper than 16GB? I think you're just begging the question now lol
 

Wando64

macrumors 68020
Original poster
Jul 11, 2013
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You doubt that 8GB of DRAM is cheaper than 16GB? I think you're just begging the question now lol
Well it is surely cheaper to buy, but is it much cheaper to make? Cheaper enough to justify two separate processes and building different SoC? I have zero knowledge on this. I am just thinking aloud so for those with some expertise (you?) feel free to educate me. Preferably in a friendly way.
 

ondioline

macrumors 6502
May 5, 2020
297
299
It has been explained. The M1 is a SoC package, there is the CPU/GPU (the processor) and attached to that is the DRAM component:

chip__fffqz3ljssi2_large_2x.jpg


Producing a variation of the M1 with different DRAM capacity is just a matter of switching out those two chips on the right. It is almost a certainty that there are not two separate 'processes' to produce this variation, it's not integral to the processor itself. It's a completely discrete part.
 
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