Discussion Qualcomm Snapdragon Thread

J

jdubs03

Senior member

Oct 1, 2013

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• Friday at 3:29 PM

• #3,526

FlameTail said:

Negativeonehero:

Truly.

Dimensity 9400 : 3.63 GHz
A18 Pro : 4.04 GHz
8 Gen 4 : 4.32 GHz

Never did I dream there would phone CPUs running at 4 GHz, and so soon too.

The 8 Gen 4 in particular seems to be a speed demon. It's "E-cores" run at 3.53 GHz, almost the same as the 3.63 GHz peak clock of the Dimensity 9400.

Efficiency is the big question now.

All 3 chips are on TSMC N3E node, so it should allow for some nice iso node comparisons.

Click to expand...

I was thinking about that 3.53GHz. For e-cores, that just seems really high. And it’s the main reason why I’ve assumed it’s power draw would be quite high. For instance the A17 Pro e-cores clocked at 2.11GHz.

 

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M

MS_AT

Senior member

Jul 15, 2024

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• Friday at 4:25 PM

• #3,527

FlameTail said:

Snapdragon 8 Gen 4 teaser;

https://twitter.com/x/status/1834256174037828066

Click to expand...

Does this fire is supposed to suggest burnt hands from too hot phones? Eh, I am afraid it will once again be more marketing than technical info event.

 

FlameTail

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Dec 15, 2021

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• Yesterday at 7:42 PM

• #3,528

There is a quite remarkable energy efficiency uplift, going from the A715 core of 8 Gen 2, to the A720 core of 8 Gen 3.

If you look at the power curve, A720 doesn't seem to be so bad compared to A18-E. It consumed much more peak power, bit also goes on to deliver higher peak performance.

Very curious how Oryon Phoenix-M of 8 Gen 4 will stack up against this.

 

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D

DZero

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Jun 20, 2024

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• Today at 9:51 AM

• #3,529

That makes me think...
- How 8 x A720 core will fare
- How 8 x Phoenix-M core will fare

I do expect seeing the first in D8400 and the 2nd in 7+ Gen 4

 

J

jdubs03

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Oct 1, 2013

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• Today at 9:59 AM

• #3,530

DZero said:

That makes me think...
- How 8 x A720 core will fare
- How 8 x Phoenix-M core will fare

I do expect seeing the first in D8400 and the 2nd in 7+ Gen 4

Click to expand...

Don’t forget the A725 which replaces the A720. I think the A725 is the more appropriate comparison.

 

FlameTail

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Dec 15, 2021

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• Today at 10:07 AM

• #3,531

[Speculation]

8 Gen 4
2 × Phoenix-L (12 MB sL2)
6 × Phoenix-M (4 MB sL2)
12 MB SLC

8s Gen 4 / 7+ Gen 4
2 × Phoenix-L (8 MB sL2)
4 × Phoenix-M (3 MB sL2)
8 MB SLC

7 Gen 4
6 × Phoenix-M (6 MB sL2)
6 MB SLC

 

D

DZero

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• Today at 11:03 AM

• #3,532

FlameTail said:

[Speculation]

8 Gen 4
2 × Phoenix-L (12 MB sL2)
6 × Phoenix-M (4 MB sL2)
12 MB SLC

8s Gen 4 / 7+ Gen 4
2 × Phoenix-L (8 MB sL2)
4 × Phoenix-M (3 MB sL2)
8 MB SLC

7 Gen 4
6 × Phoenix-M (6 MB sL2)
6 MB SLC

Click to expand...

Interesting... unless they have the Phoenix-S (small core) since having 2 less cores sounds weird.

 

FlameTail

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Dec 15, 2021

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• Today at 11:28 AM

• #3,533

Ah, a curious thought.

If Phoenix-L stands for Phoenix-Large, and Phoenix-M stands for Phoenix-Medium, doesn't that suggest the existence of a Phoenix-S (Phoenix-Small)?

Phoenix-L ≈ Cortex X series
Phoenix-M ≈ Cortex A7xx series
Phoenix-S ≈ Cortex A5xx series

 

FlameTail

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• Today at 11:30 AM

• #3,534

DZero said:

Interesting... unless they have the Phoenix-S (small core) since having 2 less cores sounds weird.

Click to expand...

iPhones have had 6-core CPUs for almost a decade now.

Whereas on the Android side, 8 cores seem to be the tradition. $150 phones boast of 8-core CPUs, evn if they are 8 A55 cores.

 

D

DZero

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• Today at 11:36 AM

• #3,535

FlameTail said:

Ah, a curious thought.

If Phoenix-L stands for Phoenix-Large, and Phoenix-M stands for Phoenix-Medium, doesn't that suggest the existence of a Phoenix-S (Phoenix-Small)?

Phoenix-L ≈ Cortex X series
Phoenix-M ≈ Cortex A7xx series
Phoenix-S ≈ Cortex A5xx series

Click to expand...

This is what I was thinking. Maybe...

8 Gen 4
2 × Phoenix-L (12 MB sL2)
6 × Phoenix-M (4 MB sL2)
12 MB SLC

8s Gen 4 / 7+ Gen 4
2 × Phoenix-L (8 MB sL2)
4 × Phoenix-M (3 MB sL2)
2 x Phoenix-S
8 MB SLC

7 Gen 4
6 × Phoenix-M (6 MB sL2)
2 x Phoenix-S
6 MB SLC

The reason is that Android is configured to use 8 cores now.
I've tested my Snapdragon 820 phone and the 650 one and both are sluggish now with the SW.

 

FlameTail

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Dec 15, 2021

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• Today at 12:18 PM

• #3,536

	Clock Speed	FP32 ALUs	FP16 ALUs	Architecture
A18 Pro	1490 MHz	768	768	Family-9 6-core
8G3	903 MHz	3072	1536	Adreno 750

Adreno 750 has multiple times more ALUs, but gets hammered by the A18 Pro in terms of performance anyways;

This really shows how primitive Adreno 7 series architecture is.
I hope Qualcomm has overhauled the architecture with Adreno 8 series. It is necessary, or else Snapdragon X Gen 2 will suffer.

One month till 8 Gen 4 is revealed to the world with Adreno 830.

Snapdragon Summit 2024
October 21st.

 

D

DZero

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• 8 minutes ago

• #3,537

FlameTail said:

iPhones have had 6-core CPUs for almost a decade now.

Whereas on the Android side, 8 cores seem to be the tradition. $150 phones boast of 8-core CPUs, evn if they are 8 A55 cores.

Click to expand...

I do see Apple in the next iteration going Octa too similar to SD8 Gen 4 (2 Big and 6 middle)