Performance Cortex A7 vs Cortex A53 64-Bit

[ashilnayak2]

Hello, I would like to ask you, what CPU is faster?

2 Ghz Quad Core ARM Cortex A7 CPU. R40. (Banana Pi M2 Ultra)

or

1.2 Ghz Quad-Core ARM Cortex A53 64-Bit (Banana Pi M64)

That Cortex A7 CPU is 32-Bit (I think) but has higher clock speed 2 GHz than Cortex A53 CPU with 1.2 GHz, but Cortex A53 is 64-Bit, so I don't know what is faster in real world scenario

[JohnS]

Benchmarks are notorious for being only any good with the actual software you want to run.  Artificial ones can prove almost anything.

So, run your workload and see.

Sorry, but it's true.

John

[olimex]

https://en.wikipedia.org/wiki/List_of_ARM_microarchitectures

A7 is 1.9 DMIPS/MHz per core
A53 is 2.3 DMIPS/MHz per core

but cache size, databus width etc matters a lot for the total performance

if everything else is same A7 @2Ghz will be faster than A53 @1.2Ghz