AMD 7850 + 7870 crossfire

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John Casali

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Jul 20, 2013
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I have a AMD A10 5800k CPU
Asus F2 A85-MCSM Mobo
16 gigs of Ripjaws ram
HIS 7850

I recently received a 7870 ghz edition and I was trying to crossfire both of those cards. I placed everything in correctly, the crossfire bridge and the power cables. I turned my PC on and it didn't detect either of those graphics cards. I'm running onboard graphics a the moment with my A10, but the graphics cards are still in the pci slots. I uninstalled the old drivers, restarted the PC, and then installed the new drivers. Once it finished installing it showed me an error and it said that the drivers weren't installed properly. Can someone please help me?
 
Solution
juanjostorreshernndez
-According to the AMD crossfire website they are compatible for crossfire.
-in normal conditions the 7870 will just clock down to match 7850 speeds
-The first and second number must match for crossfire
-7870XT is exception because of the core being used inside isn't the same core used in 7800 series

I prefer single card solution, only if you are looking at triple monitor gaming, or a 4k monitor, might sli/cf will be needed.
Even that is now changing with triple monitor support on top end cards and stronger single card solutions.

1-Dual gpu support is dependent on the driver. Not all games can benefit from dual cards.
2-Dual cards up front reduces your option to get another card for an upgrade.It will often be the case that replacing...
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juanjostorreshernndez

juanjostorreshernndez

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Sep 15, 2012
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-According to the AMD crossfire website they are compatible for crossfire.
-in normal conditions the 7870 will just clock down to match 7850 speeds
-The first and second number must match for crossfire
-7870XT is exception because of the core being used inside isn't the same core used in 7800 series

I prefer single card solution, only if you are looking at triple monitor gaming, or a 4k monitor, might sli/cf will be needed.
Even that is now changing with triple monitor support on top end cards and stronger single card solutions.

1-Dual gpu support is dependent on the driver. Not all games can benefit from dual cards.
2-Dual cards up front reduces your option to get another card for an upgrade.It will often be the case that replacing your current card with a newer gen card will offer a better upgrade path.
3-Dual gpu's do not always render their half of the display in sync, causing microstuttering. It is an annoying effect.
4-The benefit of higher benchmark fps can be offset, particularly with lower tier cards.
5-Case cooling becomes more of an issue with dual cards. also the noise is higher.
6-Your psu costs are more expensive too.

when going crossfire solution you will be dealing with issues that might arise from multi gpu configuration. (this applied to nvidia sli as well). so if you prefer single gpu config maybe you can consider to sell your current 7850 and 7870 as well in order to get a good R9 290X or GTX780ti.:
 
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