Questions about Crossfire 7870s and power supplies

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ZigglePuff

ZigglePuff

Distinguished
Aug 10, 2012
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Here's my build
http://pcpartpicker.com/p/sxfc

-1st question:
I was told there are problems with crossfiring instead of buying a new card
(I can't buy a new one because they are way too over my budget)
What are the problems? Are there ways to prevent them?
-2nd Question:
My current CX 600 power supply can't power 2 cards, I need one that has the same dimensions and can power 2 cards, any suggestions?
Thank you for all responses
 
Solution
dudewitbow
1. Crossfire problems only currently persist on DX9 Games and Eyefinity setups. its fixed for the most part on DX11 games and completely fixed hardware wise for the 290/290x(due to its new crossfire function). The problems one may encounter on DX9 games are frame timing issues. If you are playing DX9 Games, you'd be better off running off 1 card, if its DX11, then crossfire SHOULD work fine assuming the developer actually has proper multi card scaling into the game.

2. finding exact dimensions wont be easy, most psus will be standard sizeish for ATX cases.
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dudewitbow

dudewitbow

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Apr 11, 2012
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1. Crossfire problems only currently persist on DX9 Games and Eyefinity setups. its fixed for the most part on DX11 games and completely fixed hardware wise for the 290/290x(due to its new crossfire function). The problems one may encounter on DX9 games are frame timing issues. If you are playing DX9 Games, you'd be better off running off 1 card, if its DX11, then crossfire SHOULD work fine assuming the developer actually has proper multi card scaling into the game.

2. finding exact dimensions wont be easy, most psus will be standard sizeish for ATX cases.
 
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