7850 crossfire with a 600watt psu

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Guru3d reviewed that PSU recently:
http://www.guru3d.com/articles_pages/corsair_cx600m_psu_review,1.html

"We obviously had no issues whatsoever with what we threw at it and we reached roughly 500 Watt which is 20% from its theoretical maximum capacity. While passing 450 Watt load we do can confirm that the power efficiency is remains very good as it performed smack down where it needs to be in-between other bronze tested models. Again, stability wise we have very little to complain about but again. We'll trust that some other reviews will show some ripple tests yet have no doubt the product will come out totally clean. Lovely is obviously the one massive single +12V rail, it has just so much power to handle multiple heavy duty...
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Maxime506

Maxime506

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Apr 22, 2013
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Your power consumption will be 125(FX-8350)+2*130(HD 7850s)+100-130(other parts)=485-515W, since the PSU has 80% efficiency so your PSU output will be only 480W or lower esp in full load. Better get 750W PSU with semi or full modular to leave more power space and protect the rig.
 
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17seconds

17seconds

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Jul 27, 2010
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Guru3d reviewed that PSU recently:
http://www.guru3d.com/articles_pages/corsair_cx600m_psu_review,1.html

"We obviously had no issues whatsoever with what we threw at it and we reached roughly 500 Watt which is 20% from its theoretical maximum capacity. While passing 450 Watt load we do can confirm that the power efficiency is remains very good as it performed smack down where it needs to be in-between other bronze tested models. Again, stability wise we have very little to complain about but again. We'll trust that some other reviews will show some ripple tests yet have no doubt the product will come out totally clean. Lovely is obviously the one massive single +12V rail, it has just so much power to handle multiple heavy duty graphics cards. I mean 46 AMPs - one graphics card uses 15A x 12V = 180W on average these days -- you do the math. We do recommend you to stick to one graphics cards with this PSU, but that can be a high-end one."
 
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17seconds

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Jul 27, 2010
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In terms of the 13.8 drivers, there was some initial euphoria, but a closer look reveals AMD still has some work to do. Performance is still not up to par with SLI in several games. The drivers still have not fixed the frame pacing issue for: DirectX 9 games (Skyrim), OpenGL games, Eyefinity multiple monitors, and 4K high resolution single monitors. So they are fine if you play DirectX 10/11 games on a single monitor.
 
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