Putting 2 7850s in Crossfire

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FreeFourAll

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Jul 18, 2013
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Is it worth crossfiring my 2 gig 7850 or just buy a new card? I got a 1440p monitor a bit ago, and my single card can run most games just fine. I was considering a 290, but that is too expensive and overkill. My question is, will I notice FPS increases if I purchase another 7850 for 75 dollars. I have a 600ish watt PSU.
 
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herrwizo

herrwizo

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Feb 17, 2009
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If you are in the market for a new card, it is always a better idea to sell the old one and just get a new single card. Multi card configurations have their own issues with scaling, microstuttering, driver issues, increased heat and power requirements and so on. Just get a single GTX 970 or R9 290/290X. You will end up with faster rig than crossfired 7850 can provide, minus all the issues. Just make sure your PSU is a quality model, especially if you are going for an AMD card.
 
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smorizio

smorizio

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Jan 22, 2010
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free what i would do is hold on to your funds till black friday/cyber monday. in a few weeks amd dropping there r300 line of gpu. till the nda is lifted and the cards are tested from the leaked info there going to use less power then older gpu and should be faster like the newer nvidia 900 line. nvidia is at some point going to drop there replacment of there maxwell gpu (pascal) depending on how the r300 stack up to maxwell.
 
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FreeFourAll

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Jul 18, 2013
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Yeah, I know a single card would perform better.. Just that 200-300+ on a GPU in my rig is quite overkill, as that GPU would cost half of what my system is worth. Was looking at a cheap way of increasing 1440p performance.
 
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laviniuc

laviniuc

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Nov 29, 2013
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75 dollars for a 7850 isn't bad at all, crossfire gets you about 50% performance increase in supported titles. before getting it check benchmarks for the games you're looking to improve.

the 600W psu might be a problem though what brand/model exactly?
 
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FreeFourAll

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Jul 18, 2013
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It is a semi-modular Corsair PSU.
 
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laviniuc

laviniuc

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Nov 29, 2013
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and cpu/motherboard? paste an image of the label on the psu if you're not certain of the model.
 
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FreeFourAll

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Jul 18, 2013
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CPU: AMD FX-6300 3.5GHz 6-Core Processor
Motherboard: MSI 970A-G43 ATX AM3+ Motherboard
Memory: G.Skill Ripjaws Series 4GB (1 x 4GB) DDR3-1600 Memory
Storage: Western Digital Caviar Blue 1TB 3.5" 7200RPM Internal Hard Drive
Video Card: HIS Radeon HD 7850 2GB Video Card
Case: NZXT Phantom 410 (White) ATX Mid Tower Case
Power Supply: Corsair CX 600W 80+ Bronze Certified Semi-Modular ATX Power Supply
Optical Drive: Asus DRW-24B1ST/BLK/B/AS DVD/CD Writer
Operating System: Microsoft Windows 8 (OEM)
 
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FreeFourAll

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Jul 18, 2013
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Just checked eBay again and noticed that there was a 7970 for sale at 131 dollars compared to the 90ish another 7850 would cost me.
 
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laviniuc

laviniuc

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Nov 29, 2013
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couple of problems,
-crossfire on 970 is a bit tricky, second pci ex is 4x.
-might want to get another 4gb ram too

as suggested above, a 7970 is a better choice, i'd get that and sell the old 7850 to recover some of the costs.
 
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