Re:SanDisk SD memory card 'largest ever'
by 3rd3 on Friday September 12, 2014 @11:02AM
(#8308355)
Amazing, that is 320 GB/cm^3. I didn't know that we have possibly already passed the information density of the human brain (~80 GB/cm^3).
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Re:SanDisk SD memory card 'largest ever'
by jacquesm on Friday September 12, 2014 @11:13AM
(#8308433)
You can't really compare passive storage with combined processing and storage. The brain computes all over, it does not have a 'data bus' or a von Neumann like bottle-neck as far as we know today.
Of course not. However, I would have guessed that the 3-dimensional structure of the brain would still have higher information density compared to 2-dimensional IC's (+ wiring + heat regulation) by some orders of magnitude. But I guess neurons aren't that small after all.
Re:SanDisk SD memory card 'largest ever'
by jacquesm on Friday September 12, 2014 @05:04PM
(#8310457)
They're not all that small and there is a ton of support infrastructure and deadweight around them.
Actually, if my math is correct the ratio of storage to size of a 128GB Micro SD is still greater.
In two dimensions, for simplicity's sake, since a micro SD is obviously slimmer than a regular SD:
512GB SD = 768mm^2
128GB Micro SD = 165mm^2
SD = 0.667 GB/mm^2
Micro SD = 0.776 GB/mm^2
If we add the third dimension the efficiency of a Micro SD will be even greater compared to a SD.
