Quick Question about the Snapdragon 820

[nolimit06]

Hello all, I've been away from Android for almost 4 years. I've been reading about the Snapdragon 820 and I'm not understanding why Samsung has 2 cores at one speeds and 2 at a lower clock speed. Is there a reason for this? Seems kinds strange seeing as the 820 is capable of 2.2Ghz on all 4 cores. Just trying to understand why this is and if this makes any difference in performance.

Thanks!

 

[rcobourn]

However they are using them, the primary reason is almost certainly reduced battery consumption, with reduced heat production a strong secondary reason.

If I was guessing, I'd say the low clock cores are handling things like doze mode and the always on screen.

Sent from my SM-N910T using Tapatalk

 

[nolimit06]

However they are using them, the primary reason is almost certainly reduced battery consumption, with reduced heat production a strong secondary reason.

If I was guessing, I'd say the low clock cores are handling things like doze mode and the always on screen.

Sent from my SM-N910T using Tapatalk

Thanks, that's what I figured. So I'd the SD820 a quad core or 8 core SoC? I'm seeing conflicting things about this all over. I do know the Exynos chip is 8 core SoC.


Sent from my iPhone using Tapatalk

 

[Lodix]

It is a 4 core cpu but they are divided in 2 clusters and work independently one of the other. The cluster clocked at 2'2GHz is tweaked for high performance and it is dedicated for heavy stuff. The cluster clocked at 1'6GHz is tweaked for lower power consumption and might be more efficient at lower clocks than the other cluster. It is not a Samsung thing, the SOC was designed like this by Qualcomm, you probably could not run all 4 cores at 2'2 without draining too much power and heating up.