Question Is it possible to apply efficiency gains and performance gains to separate parts of an SoC ?

FlameTail

Member
Dec 15, 2021
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Let's say I make a hypothetical smartphone SoC called 'Flame 1' on the 7nm Node.

Then I introduce the 'Flame 2' SoC which is identical to the Flame1 in every way (same cpu, same gpu, same npu), except that it is built on the newer 7nm+ node.

Now let's say the 7nm+ Node give x% more performance OR y% more efficiency than 7nm.

So can I apply the performance improvement of the new Node to part of the SoC ( eg : CPU ) and apply the efficiency improvement to another component ( eg: GPU ) of the same SoC ? Is this possible ?
 

turtile

Senior member
Aug 19, 2014
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Let's say I make a hypothetical smartphone SoC called 'Flame 1' on the 7nm Node.

Then I introduce the 'Flame 2' SoC which is identical to the Flame1 in every way (same cpu, same gpu, same npu), except that it is built on the newer 7nm+ node.

Now let's say the 7nm+ Node give x% more performance OR y% more efficiency than 7nm.

So can I apply the performance improvement of the new Node to part of the SoC ( eg : CPU ) and apply the efficiency improvement to another component ( eg: GPU ) of the same SoC ? Is this possible ?
I have no idea about different design rules on one chip but this can easily be done with chiplets.
 

Thala

Golden Member
Nov 12, 2014
1,307
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Let's say I make a hypothetical smartphone SoC called 'Flame 1' on the 7nm Node.

Then I introduce the 'Flame 2' SoC which is identical to the Flame1 in every way (same cpu, same gpu, same npu), except that it is built on the newer 7nm+ node.

Now let's say the 7nm+ Node give x% more performance OR y% more efficiency than 7nm.

So can I apply the performance improvement of the new Node to part of the SoC ( eg : CPU ) and apply the efficiency improvement to another component ( eg: GPU ) of the same SoC ? Is this possible ?
You control whether you want better performance or power via voltage and clock. So assuming you have different voltage and clock domains in your SoC - you can decide per domain.
 
Last edited:

Tup3x

Senior member
Dec 31, 2016
590
437
136
Let's say I make a hypothetical smartphone SoC called 'Flame 1' on the 7nm Node.

Then I introduce the 'Flame 2' SoC which is identical to the Flame1 in every way (same cpu, same gpu, same npu), except that it is built on the newer 7nm+ node.

Now let's say the 7nm+ Node give x% more performance OR y% more efficiency than 7nm.

So can I apply the performance improvement of the new Node to part of the SoC ( eg : CPU ) and apply the efficiency improvement to another component ( eg: GPU ) of the same SoC ? Is this possible ?
In that case you'd clock the CPU part higher (get more performance at same power) and keep the GPU part as is (same performance, lower power).
 

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