Seasonic M12 II Evo vs X series

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kumarvimal

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What are the other diiferent apart from efficiency and fan control between these 2 series by Seasonic.
Am I safe buying a M12 II Evo for a gtx 980 amp omega SLI + watercooling rig???
 
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geofelt

geofelt

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No difference apart from efficiency.
Seasonic is about the best quality.
One issue you will have is that those cards are heavily overclocked and need two 8 pin adapters each.
375w for each card alone.(150 for each 8 pin plus 75w for the slot)
That will require a very strong psu. I might expect you to need about a 1000w psu.
This chart says 1600w for R9-290X2 which also needs 2 8 pin adapters.
Whatever, size your psu carefully.

What will you watercool?
If you are looking at a AMD FX-9xxx then that is a very hot cpu that takes power and cooling.
That cpu may be inadequate to drive those graphics cards.
If you are looking at a i7-4790K then you probably do not need liquid cooling.

If you are looking to watercool the graphics cards, it might be better to buy the evga gtx980 hydrocopper units up front.
 
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kumarvimal

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My CPU is i7 2600k and was thinking of buying a h80 cooler for that.
This CPU+cooler+zotac 980 amp omega sli power requirement will be more than 850W or what?

I was thinking of buying a 850 M12 II Evo for this setup
 
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Suztera

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850 M12 II Evo is enough.
 
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ko888

ko888

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Feb 18, 2009
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Your opinion doesn't reflect reality. In the real world Seasonic's RMA rates, due to PSU failure, are higher than industry average. It doesn't mean that the PSUs are poorly engineered though.
 
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The Original Ralph

The Original Ralph

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can i ask the source of your info?
 
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geofelt

geofelt

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Normally, 750W is recommended for a GTX980.
http://www.realhardtechx.com/index_archivos/Page362.htm
But, these particular cards( gtx 980 amp omega ) do not run on two 6 pin connectors, but actually need two 8 pin connectors because they are highly overclocked.
That adds 150w per card or 300w more than the normal 750w required.

I might question the selection of those cards to be run by a older 2600K, even if it is highly overclocked.
I think a pair of More normal GTX980 superclocked cards would be more practical.
 
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ko888

ko888

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It was discussed in this forum post:
http://www.jonnyguru.com/forums/showthread.php?t=11759&page=3

I saw data that confirms what jonnyGURU said here:
http://www.hardware.fr/articles/927-1/taux-retour-composants-11.html

Where's your data to support:

 
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kumarvimal

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What is the power supply wattage that you recommend for this configuration?

 
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kumarvimal

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I knew about this card earlier. The problem is that if its not available from an online store in India and if I ship it from newegg then I will have to pay the extra shipping charges+tax that will add to an enormous amount of money overhead.

As far as power consumption is concerned, toms hardware vga charts 2015 claims it as consuming only 206W at maximum. I really don't understand why the 2 8-pin pcie connectors are given on the card.
 
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geofelt

geofelt

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The card designers felt that in addition to the 75w max from the pcie slot, the card needed 300w. That probably represents a worst case situation, and the real draw might have been on the low end of the last 75w. Still I don't know how one can second guess the engineers.
Look at the advertised boost clock as an indicator of what you are getting for your money.
Often a different superclock card will match it at less power.
 
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