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Is 850W enough for SLI Xfire of next gen vid cards?

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  • Power Supplies
  • Graphics Cards
  • Next Generation
  • SLI
  • Components
  • Product
Last response: in Components
a b U Graphics card
January 14, 2013 3:48:04 PM

So I've got my new system done (see tag) except the video card; which I'm waiting until the next gen cards are out.
I'm currently running a TX750 Corsair but it isn't moduler so I'm planning on buying:
CORSAIR Professional Series Gold AX850

I'm not sure if I'll SLI or Xfire or not but just in case, do you think this PSU would cut it?

More about : 850w sli xfire gen vid cards

a b U Graphics card
a b ) Power supply
January 14, 2013 3:51:18 PM

yessir two top end cards amd or nvidia flavor. every gen they are trying to make those cards more efficient with smaller transistors so the wattage requirements should only go down
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a b ) Power supply
January 14, 2013 4:13:03 PM

If you are going for an 850W, I would consider this Seasonic X-850 KM3 instead:

http://www.newegg.com/Product/Product.aspx?Item=N82E168...

The Corsair AX850 is based on the Seasonic X-850 KM2 - the previous generation. The new KM3 series has a better design and tighter regulation.

As mentioned, power consumption is going down. You really won't need 850W.
A good 650 or 750W should do you for any CF or SLI.
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January 14, 2013 4:14:41 PM

850 watts is enough for two 7970 GHz edition, so yes. As alvine said, they are making them more and more efficient, so it would at max be 850 watt most likely.
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a b U Graphics card
January 14, 2013 4:38:52 PM

redtailed said:
If you are going for an 850W, I would consider this Seasonic X-850 KM3 instead:

http://www.newegg.com/Product/Product.aspx?Item=N82E168...

The Corsair AX850 is based on the Seasonic X-850 KM2 - the previous generation. The new KM3 series has a better design and tighter regulation.

As mentioned, power consumption is going down. You really won't need 850W.
A good 650 or 750W should do you for any CF or SLI.


Currently the Corsair has a 15% discount plus I have $40 in Newegg gift cards.
Is it worth $25 extra upfront to get the Seasonic? I don't realy factor rebates in.
Otherwise, which 750W would you recommend?

Corsair:
$105 out of pocket - $10 rebate = $9S
Seasonic:
$130 out of pocket - $20 rebate = $110
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a b ) Power supply
a b U Graphics card
January 14, 2013 7:11:44 PM

Hi :) 

HONEST answer is probably but NOBODY knows...

All the best Brett :) 
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January 14, 2013 9:57:04 PM

ibjeepr said:
So I've got my new system done (see tag) except the video card; which I'm waiting until the next gen cards are out.
I'm currently running a TX750 Corsair but it isn't moduler so I'm planning on buying:
CORSAIR Professional Series Gold AX850

I'm not sure if I'll SLI or Xfire or not but just in case, do you think this PSU would cut it?


I'm running a i7 2600 and 2 GTX 680 4gb ftw in SLI with only the AX750. I've also got it running 4 large case fans, 2 SSD's and a caviar blue. I honestly don't think you need to go any higher than 750.
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a b ) Power supply
January 14, 2013 10:41:30 PM

ibjeepr said:
Currently the Corsair has a 15% discount plus I have $40 in Newegg gift cards.
Is it worth $25 extra upfront to get the Seasonic? I don't realy factor rebates in.
Otherwise, which 750W would you recommend?

Corsair:
$105 out of pocket - $10 rebate = $9S
Seasonic:
$130 out of pocket - $20 rebate = $110


I think it is, but your call!

Cheers
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a b U Graphics card
January 14, 2013 11:31:27 PM

Yes a quality 850w will handle 2 cards just fine.
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a b U Graphics card
January 15, 2013 2:18:20 AM

Thanks for the answers everyone! I've been so happy with my TX750 I'm tempted to go AX750 but I think I'll give Seasonic a shot. The low number of reviews on Newegg concerns me a bit but I'm sure it's as good PSU.
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a b ) Power supply
January 15, 2013 3:32:17 AM

Good luck. The Seasonic X-850 certainly is a great PSU - I have one.
Cheers
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a b U Graphics card
January 15, 2013 3:28:58 PM

Best answer selected by ibjeepr.
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