How does the snapdragon 820 fare against my i5 2500k? Is there

>>56641970
Your one core beats all of the 820 cores in anything ever.

>>56641991
why not just have 1 powerful core then instead of many weak ones?

>>56642027
marketing. apple's mobile SoC have been mostly dual core up till now but they wrecked everything Qualcomm ever put out

>>56642027
Power. Good luck with a 50w core in your mobile...

Depends on the task, sometimes they get quite close to desktop chips but if you run something that uses AVX or other SIMD instructions they will lose badly.

ARM is adding a 2048bit SIMD option to ARM cpus but you wont see that on phones.

>>56642027
Because phones do many things at once, including background shit that you've never heard of.
Also SoC CPU is responsible for managing eMMC memory which doesn't have it's own controller - trimming, etc.
So multicore SoCs are better if you have real OS like Android where you can multitask.
Applel products are a different story...

>>56642027

The power dissipation / frequency ratio is much more convenient in a multicore situation