Mathematical relation between number of GPUs and H/s

[bernardoaraujor]

This is more of a theoretical question.

I need to know what is the mathematical relation between the number of GPUs being used and the cracking speed.

For example, for a fixed kind of GPU, I have X H/s. If I used 10 GPUs of the same kind, would I get 10X H/s?
If not, what would my speed be?

Is there any kind of rule or mathematical model that would give me that relation?

[atom]

Yes, if the keyspace to search is large enough, it would be 10X.

Basically you can simply sum up all speeds, there's no loss due to parallelization. Hashcat can also handle devices of different types and/or processing power.

[bernardoaraujor]

Yes, if the keyspace to search is large enough, it would be 10X.

Basically you can simply sum up all speeds, there's no loss due to parallelization. Hashcat can also handle devices of different types and/or processing power.

thanks!!