<blockquote>
  <p>What i'm wondering is how many PSU's would I will need and what kind is recommended? </p>
</blockquote>

<p>I would recommend much higher PSU, at least 1000 Watt PSU for each two Radeon's R9 290x. This is based on some recommendations I found (<a href="http://www.tomshardware.co.uk/answers/id-1873375/power-supply-support-radeon-290s-290x.html" rel="nofollow">here</a> and <a href="http://www.tomshardware.co.uk/answers/id-1889129/power-supply-sapphire-280x.html" rel="nofollow">here</a>). I am 99.99% confident a single 750 Watt PSU will NOT be able to cover 6 GPUs of that power. </p>

<p>I also think the motherboard you selected can only take 3 cards, you need to double check. Even with 3 slots the cards may not have enough room between the slots, so you will need to use extension cables. The CPU is actually overpowered, I would select a low-power one. CPU will not be used for mining. Memory is not used as well. You will be covered with a 2-4GB stick to run the OS processes.</p>

<p>No one seem to be bothered with a case. For that much price of a hardware you don't want much dust to come in. Or any morning coffee spilt on your expensive hardware... I would advice to buy a large, solid, enclosure with good ventilation. This would cost you around $200. But it will protect the hardware much better then a milk or vegi plastic case.</p>

<p>Just thoughts, I am NOT a professional electrical engineer. </p>

CC BY-SA 3.0
2014-01-10T11:30:25.547Z
2014-01-10T11:30:25.547Z
oleksii
<p>I found a DIY article (<a href="http://www.ltcminingcontracts.com/DIYRig.aspx" rel="nofollow">http://www.ltcminingcontracts.com/DIYRig.aspx</a>) for scrypt mining that uses 5 x Gigabyte R9 270 GPUs and a 1200 watt PSU.  They are more cost efficient than the 290X.  They use a lot less power, and although they have a lower hash rate individually, you can get multiple (for a larger combined hash rate) for the price of just one 290X.</p>

CC BY-SA 3.0
2014-02-09T04:09:50.863Z
2014-02-09T04:09:50.863Z
Ash
<p>i went to configmyrig.com and selected the options to hit something close to 5mh.
here is a screenshot:</p>

<p><a href="http://s28.postimg.org/uayj19exp/Screen_Shot_2014_01_09_at_11_21_58_PM.png" rel="nofollow">http://s28.postimg.org/uayj19exp/Screen_Shot_2014_01_09_at_11_21_58_PM.png</a></p>

<p>i'll be scrypt mining at a multipool and the total that came up for the complete setup is about $5,000 seems like alot but let me know if you have any suggestions. What i'm wondering is how many PSU's would I will need and what kind is recommended? I'm thinking it would be a gold or platinum for the PSUs but i'm not sure how many and what kind would suit 6 Radeon R9 290x's. Also is the motherboard &amp; cpu selected good enough? I'll be using a milk carton for the rig instead of a case so i'll need to get a hold of a good one.</p>

CC BY-SA 3.0
2014-01-15T09:14:33.137Z
Clarifying on the power consumption:  The TDP of the R9 290x is up to 300W, so let's assume 360 to leave room for power tuning.  Assuming a 75% efficient PSU, that's 2880 W for the GPUs alone (also add your CPU and mobo.  Err on the safe side, count at least 3000 W).  I don't think a single 750 W supply will be able to give you 3 kW. ;-)  Not only that, 3 kW is an awful lot of heat to dissipate!  Any thought to water cooling systems?  Also, I don't think that mobo has room for 6 GPUs, I bet each GPU takes at least 3 slots, and then you have to leave room for a LOT of ventilation.
rdb
CC BY-SA 3.0
2014-01-15T09:18:05.077Z
Just to put these numbers in perspective, I had to upgrade from a 600 to a 750W PSU for my own mining rig with two low-end cards.  My rig uses about 550 W while mining, and it makes my decently sized room quite uncomfortably warm, not to mention that even with 7 fans I'm having trouble controlling the heat production.  You'd be dealing with almost six times that.
rdb
<litecoin><mining-hardware><scrypt><mining-setup>
scrypt mining rig suggestions
Exploit
# scrypt mining rig suggestions

(Asked by: username_0 on 2014-01-10)

i went to configmyrig.com and selected the options to hit something close to 5mh.
here is a screenshot:

<http://s28.postimg.org/uayj19exp/Screen_Shot_2014_01_09_at_11_21_58_PM.png>

i'll be scrypt mining at a multipool and the total that came up for the complete setup is about $5,000 seems like alot but let me know if you have any suggestions. What i'm wondering is how many PSU's would I will need and what kind is recommended? I'm thinking it would be a gold or platinum for the PSUs but i'm not sure how many and what kind would suit 6 Radeon R9 290x's. Also is the motherboard & cpu selected good enough? I'll be using a milk carton for the rig instead of a case so i'll need to get a hold of a good one.

**Tags:** litecoin, mining-hardware, scrypt, mining-setup

> **Comments:**
> **username_1**: Clarifying on the power consumption:  The TDP of the R9 290x is up to 300W, so let's assume 360 to leave room for power tuning.  Assuming a 75% efficient PSU, that's 2880 W for the GPUs alone (also add your CPU and mobo.  Err on the safe side, count at least 3000 W).  I don't think a single 750 W supply will be able to give you 3 kW. ;-)  Not only that, 3 kW is an awful lot of heat to dissipate!  Any thought to water cooling systems?  Also, I don't think that mobo has room for 6 GPUs, I bet each GPU takes at least 3 slots, and then you have to leave room for a LOT of ventilation.  
> **username_1**: Just to put these numbers in perspective, I had to upgrade from a 600 to a 750W PSU for my own mining rig with two low-end cards.  My rig uses about 550 W while mining, and it makes my decently sized room quite uncomfortably warm, not to mention that even with 7 fans I'm having trouble controlling the heat production.  You'd be dealing with almost six times that.  

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## 2 answers

### Answer by username_2 on 2014-01-10. Score: 1

> What i'm wondering is how many PSU's would I will need and what kind is recommended?

I would recommend much higher PSU, at least 1000 Watt PSU for each two Radeon's R9 290x. This is based on some recommendations I found ([here](http://www.tomshardware.co.uk/answers/id-1873375/power-supply-support-radeon-290s-290x.html) and [here](http://www.tomshardware.co.uk/answers/id-1889129/power-supply-sapphire-280x.html)). I am 99.99% confident a single 750 Watt PSU will NOT be able to cover 6 GPUs of that power.

I also think the motherboard you selected can only take 3 cards, you need to double check. Even with 3 slots the cards may not have enough room between the slots, so you will need to use extension cables. The CPU is actually overpowered, I would select a low-power one. CPU will not be used for mining. Memory is not used as well. You will be covered with a 2-4GB stick to run the OS processes.

No one seem to be bothered with a case. For that much price of a hardware you don't want much dust to come in. Or any morning coffee spilt on your expensive hardware... I would advice to buy a large, solid, enclosure with good ventilation. This would cost you around $200. But it will protect the hardware much better then a milk or vegi plastic case.

Just thoughts, I am NOT a professional electrical engineer.


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### Answer by username_3 on 2014-02-09. Score: 0

I found a DIY article (<http://www.ltcminingcontracts.com/DIYRig.aspx>) for scrypt mining that uses 5 x Gigabyte R9 270 GPUs and a 1200 watt PSU. They are more cost efficient than the 290X. They use a lot less power, and although they have a lower hash rate individually, you can get multiple (for a larger combined hash rate) for the price of just one 290X.


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