[pexaizix]

1 GHz on x86 != 1 GHz on ARM

[Dylan16807]

If it allows Atoms, then most arm processors should be acceptable.

[Synaesthesia]

The IPC and architecture is obviously very important.

[Narishma]

Even 1Ghz on one x86 != 1Ghz on a different x86 CPU.

[floatboth]

And of course on a different ARM CPU.

Cortex-A53 is an ultra low power, tiny core. It's okay for an embedded toy, it's miserable for a real computer. You really really want at least a Cortex-A72.

[matthewaveryusa]

Interesting -- can you elaborate a bit more?