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Author Topic: Quad 7970 recommended PSU size  (Read 1656 times)
biganth
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April 09, 2013, 11:18:27 PM
 #1

Can anyone tell me what kind of PSU is needed to power 4 of these in a rig? In the specs it says:

Minimum Recommended Power System Power Supply unit 550W.

Does that mean I need a 2200W PSU? Does that even exist?

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April 09, 2013, 11:26:33 PM
 #2

Just post in one place at a time!

https://bitcointalk.org/index.php?topic=170637.msg1787799#msg1787799
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April 09, 2013, 11:29:55 PM
 #3


Yeah sorry, got impatient. Mod feel free to delete this topic.

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April 09, 2013, 11:42:51 PM
 #4

4x250W TDP = 1000W, + 150W for the cpu, ram, hdd, etc.

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April 10, 2013, 12:09:42 PM
 #5

150w is a bit high for CPU since it wont be doing anything, maybe 70w.

A 1200w will do fine.
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April 10, 2013, 08:00:42 PM
 #6

1200W should do the trick

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April 10, 2013, 09:47:05 PM
 #7

A good quality 1200W PSU  would be fine. A single rail seasonic 1250W is what i would run (and have run). A cheapo 1200W PSU....not a chance.

Sorry, I'm all sold out of x6500's.
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April 10, 2013, 10:56:37 PM
 #8

A good quality 1200W PSU  would be fine. A single rail seasonic 1250W is what i would run (and have run). A cheapo 1200W PSU....not a chance.

Have any experience with the Cooler Master Silent Pro Gold 1200W? Is it considered good quality in mining circles?

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April 10, 2013, 11:16:50 PM
 #9

A good quality 1200W PSU  would be fine. A single rail seasonic 1250W is what i would run (and have run). A cheapo 1200W PSU....not a chance.

Have any experience with the Cooler Master Silent Pro Gold 1200W? Is it considered good quality in mining circles?

Lower end Cooler Masters are crap.  That 1200 Pro Gold is very nice and have no problem.

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April 11, 2013, 01:59:54 AM
 #10

Quote
Have any experience with the Cooler Master Silent Pro Gold 1200W? Is it considered good quality in mining circles?

Quote
Lower end Cooler Masters are crap.  That 1200 Pro Gold is very nice and have no problem.

Thank you DrG.

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April 11, 2013, 02:30:49 AM
 #11

Quote
Have any experience with the Cooler Master Silent Pro Gold 1200W? Is it considered good quality in mining circles?

Quote
Lower end Cooler Masters are crap.  That 1200 Pro Gold is very nice and have no problem.

Thank you DrG.

No problem.  Let me just share some wisdom with some noobies who may be reading this.  Don't skimp on the PSU.  You can skimp on everything else, even the cards but don't skimp on the PSU.

I never went for the cheapest Apevia or Rosewill crap at Newegg but I never really shelled out for the high end Seasonics that everybody bought.  Mostly because I live in an area where 50F is considered cold, so having 4 card next to each other even with risers was not an option.  Having been in mining since 2011 I now regret it in hindsight.  Of course I didn't know my hardware would pay for itself 10x over with the current BTC price.

But high end PSU will use less energy and put out less heat.  They'll save your electric bill and allow you to push the cards even harder since there will be less ambient heat and cleaner power.

I finally did buy a Gold Seasonic 750, but that was so my rig at home would be efficienct as my power is $0.40.  The BTC GPU mining game is almost over, but if you intended to carrry on into LTC then spend $100 extra on the GOLD/PLAT PSUs.  It will allow you to move hardware around later when you have a 100 or 200 card farm like I did.  I had to play so much PSU musical chairs because my PSUs were always just a tad underpowered (Antec Neo Eco 620s just short of being able to support 2 LTC 7970s).

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