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

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

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

<blockquote>
  <p>Could the answer please include efficiency for both solo mining and pool mining?</p>
</blockquote>

<p>My advice applies for both.</p>

CC BY-SA 3.0
2013-04-23T01:07:11.023Z
If I had a solution for the cooling problem, would you consider having 3 cards in one box to be the best solution?
user4543
CC BY-SA 3.0
2013-04-23T01:12:15.183Z
@user4543 Yeah.
Nick ODell
CC BY-SA 3.0
2013-04-23T01:06:02.403Z
2013-04-23T01:06:02.403Z
Nick ODell
<p>I have 4 video cards: <strong>2x 7970</strong> &amp; <strong>2x 6970</strong>.</p>

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

<ol>
<li>~1900 MH/s on one machine </li>
<li>~1200 MH/s and ~700 MH/s on respective machines</li>
<li>It does not matter</li>
</ol>

<p>Could the answer please include efficiency for both solo mining and pool mining?</p>

CC BY-SA 3.0
2013-04-23T00:23:48.863Z
More efficient in terms of Hash/Second, Hash/$ or Hash/Watt?
Nick ODell
CC BY-SA 3.0
2013-04-23T00:43:30.700Z
@NickODell I reworded the question.
user4543
<hashpower><gpu-mining><mining-setup>
Is it more efficient to use multiple computers when I have multiple GPUs?
user4543
# Is it more efficient to use multiple computers when I have multiple GPUs?

(Asked by: username_0 on 2013-04-22)

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?

**Tags:** hashpower, gpu-mining, mining-setup

> **Comments:**
> **username_1**: More efficient in terms of Hash/Second, Hash/$ or Hash/Watt?  
> **username_0**: @NickODell I reworded the question.  

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## 1 answers

### Answer by username_1 on 2013-04-23. Score: 5 | Accepted answer

> 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.

> **Comments:**
> **username_0**: If I had a solution for the cooling problem, would you consider having 3 cards in one box to be the best solution?  
> **username_1**: @username_0 Yeah.  

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