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scorpio187

macrumors member
Original poster
Sep 22, 2013
30
3
So Samsung today has announced its 10nm class 8-gigabit (Gb) LPDDR5 DRAM. I'm wondering if it would be possible to increase the size of the RAM using the new DRAM.
 

leman

macrumors Core
Oct 14, 2008
19,357
19,430
I hope that we will get to stacked DRAM before that. Anyway, its still years away...
 

Yvan256

macrumors 603
Jul 5, 2004
5,085
1,019
Canada
LPDDR5 memory isn't denser. It's just faster. Ultimately, the amount of RAM is limited by how much the CPU can support.
But the LPDDR5 part means it's low power, which would allow Apple to use LPDDR5 RAM in future laptops and portable devices like the iPhone and iPad.
 

chabig

macrumors G4
Sep 6, 2002
11,343
9,034
But the LPDDR5 part means it's low power, which would allow Apple to use LPDDR5 RAM in future laptops and portable devices like the iPhone and iPad.
And they will, when the silicon supports it and the benefit is worth the costs. The same can be said about LPDDR6, LPDDR7, etc.
 

scorpio187

macrumors member
Original poster
Sep 22, 2013
30
3
But the LPDDR5 part means it's low power, which would allow Apple to use LPDDR5 RAM in future laptops and portable devices like the iPhone and iPad.

So would the same thing apply if it was DDR5 too?
 

Yvan256

macrumors 603
Jul 5, 2004
5,085
1,019
Canada
So would the same thing apply if it was DDR5 too?
DDR5 would require more power, meaning portable devices that require bigger batteries and that would produce more waste heat. Not a good choice for phones and tablets.

The important part here is the LP which stands for Low Power. The "DDR4/DDR5/etc" part denotes the generation of memory. A higher number usually indicates better speeds, higher density, etc.
 

Lennyvalentin

macrumors 65816
Apr 25, 2011
1,431
794
I hope that we will get to stacked DRAM before that. Anyway, its still years away...
Stacked anything is problematic in a high power device like a laptop processor. Actually it's somewhat problematic already in smart devices also, because these draw enough power nowadays to become quite hot as well.

Without further technical innovations like fluid microchannel cooling or whatever the boffins might come up with - or simply something that vastly lowers power consumption - I wouldn't expect stacked memory in laptops or desktops.
 
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