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Can I Crossfiring 7970s on 750 watts?

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  • Power Supplies
  • Support
  • Graphics Cards
  • Build
  • Graphics
Last response: in Graphics & Displays
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October 20, 2013 7:36:29 PM

Hello, I was wondering if my 750 watt power supply will support 2 7970s. I already have 1 and adding another could be a relatively cheap ugrade. My build is http://pcpartpicker.com/p/1QEUE. Also is a 1cm space in between the cards enough? Finally will 2 x 7970s be better than 1 290x?
Thank you in advance,
Failedpure

More about : crossfiring 7970s 750 watts

a c 722 ) Power supply
a c 1429 U Graphics card
October 20, 2013 7:40:42 PM

Yes that PSU should handle it fine. The dual 7970 will probably be better than a single 290X.
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a b ) Power supply
a b U Graphics card
October 20, 2013 7:41:33 PM

If the current benchmarks are to be believed, the 290X is on par with a 7990, so 7970x2 should be pretty much equal. Where it won't be equal is in the stutter Crossfire has, which is still an issue outside of single screen DX11. Personally I'd 100% wait it out and get the 290X assuming you are going to stick to AMD.

The PSU will work fine.
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October 20, 2013 7:49:27 PM

cookybiscuit said:
If the current benchmarks are to be believed, the 290X is on par with a 7990, so 7970x2 should be pretty much equal. Where it won't be equal is in the stutter Crossfire has, which is still an issue outside of single screen DX11. Personally I'd 100% wait it out and get the 290X assuming you are going to stick to AMD.

The PSU will work fine.


I already have 1 7970 so this would likely be a kind of cheap upgrade. If I only use 1 screen is a micro-stuttering a non-issue?
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a b U Graphics card
October 20, 2013 7:54:46 PM

failedpure said:
cookybiscuit said:
If the current benchmarks are to be believed, the 290X is on par with a 7990, so 7970x2 should be pretty much equal. Where it won't be equal is in the stutter Crossfire has, which is still an issue outside of single screen DX11. Personally I'd 100% wait it out and get the 290X assuming you are going to stick to AMD.

The PSU will work fine.


I already have 1 7970 so this would likely be a kind of cheap upgrade. If I only use 1 screen is a micro-stuttering a non-issue?

i have catalyst 13.11 and use a 1080p screen with perfect gameplay :) 

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