Can I use two graphic cards?

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Matt2298

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Aug 25, 2013
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I bought a pc a month ago:

AMD FX-6100 3.3GHz Six Core Bulldozer Processor
8GB DDR3 1333Mhz Ram
1TB Hard Drive Storage
AMD Radeon HD 6670 2GB HDMI Graphics Card
HDMI 1080p, USB 3.0

I have played bf3 and I am getting 30-40fps on low settings. So after some research i found out out its down to the graphics card? So I'm wondering if i can buy a sapphire 5670 and use it with my 6670 is that possible?

PLEASE HELP REALLY DESPERATE!!!
 
Solution
IInuyasha74
Like everyone else said it depends if your power supply and motherboard can handle it.

As for using a 5670 with a 6670, you cannot do this. SLI/Crossfire only works with graphics card that are the same, for example you could use two 6670's with each other. The only exceptions to this are if you are using an AMD APU, which crossfires with graphics cards. The other exception is if you have a rebadge and an original card. For example if you had a 5850, and when the next series of cards came out they decided to rename it 6750 and release it as a new card. I do not know if which cards are like this right off, but I know some work this way.
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Matt2298

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Aug 25, 2013
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How would i check if it can? its a GIGABYTE motherboard and does it have to be two of he same? or is it worth just upgrading to a better one than two?

 
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toyftw

toyftw

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Jul 29, 2012
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Hi - you didn't list your Power Supply, so two GPU's might not be an option anyway.

Plz post your PSU brand/model here along with you mobo model. We can offer better advice
if we have all the facts.

 
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IInuyasha74

IInuyasha74

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May 1, 2013
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Like everyone else said it depends if your power supply and motherboard can handle it.

As for using a 5670 with a 6670, you cannot do this. SLI/Crossfire only works with graphics card that are the same, for example you could use two 6670's with each other. The only exceptions to this are if you are using an AMD APU, which crossfires with graphics cards. The other exception is if you have a rebadge and an original card. For example if you had a 5850, and when the next series of cards came out they decided to rename it 6750 and release it as a new card. I do not know if which cards are like this right off, but I know some work this way.
 
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Solution
Mousemonkey

Mousemonkey

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Sep 3, 2006
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The 4770 and 5770 were two IIRC.
 
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IInuyasha74

IInuyasha74

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Well after seeing your crossfire chart you posted earlier, it shows several cards of different shader count working together, so maybe they can.
The 5670 and 6670 have the same memory bit through put, but the 5670 has 80 more shaders and is clocked higher. That difference is a less than the 5970 and 5830 which apparently can crossfire, so you might be able to use them together.

IF you want to be completely safe though you should just buy a second 6670.
 
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toyftw

toyftw

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I think Wolf is trying to tell you the 6670 doesn't CF.

 
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IInuyasha74

IInuyasha74

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SO now you have a 7790 and an FX-6100 but you aren't getting higher FPS than you did with a 6670?
That shouldn't be happening. Make sure you have the driver installed correctly and everything.
If you are getting 60FPS constant, then raise the game quality settings, the resolution, or turn off Vsync if you want. You might just be maxing that particular game if its a bit old.

The CPU you have shouldn't be causing a bottleneck, so some setting somewhere has to be off. I can't think of any other reason why a 7790 wouldn't run laps around a 6670.
 
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