Is it more efficient to use multiple computers when I have multiple GPUs?

Question

I have 4 video cards: 2x 7970 & 2x 6970.

This is a question of efficiency regarding MH/s. Simply, I would like to know which is better:

1. ~1900 MH/s on one machine
2. ~1200 MH/s and ~700 MH/s on respective machines
3. It does not matter

Could the answer please include efficiency for both solo mining and pool mining?

Answer 1

This is a question of efficiency regarding MH/s. Simply, I would like to know which is better

It doesn't matter. Every hash has an equal probability of finding a block. However, that being said, there's some hidden teeth:

• Putting graphics cards together will make them harder to cool.
• Putting them in multiple computers will use more electricity - all computers use some electricity, even at idle.

Could the answer please include efficiency for both solo mining and pool mining?

My advice applies for both.