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Dual GPU question

post #1 of 10
Thread Starter 
Ok, so basically there's this dude that's trying to sell me a CPU for more than I want to, and instead of rebating he says he will give me an HD 4850 for "free", because according to him I can pair it with my 6870 to gain performance in games.

Seems to me like that's bollocks and he's just trying to sell an overpriced CPU. I searched on Google but I didn't find an accurate answer as to whether this is possible or not. So, is it possible?
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post #2 of 10
Quote:
Originally Posted by Trull View Post

Ok, so basically there's this dude that's trying to sell me a CPU for more than I want to, and instead of rebating he says he will give me an HD 4850 for "free", because according to him I can pair it with my 6870 to gain performance in games.
Seems to me like that's bollocks and he's just trying to sell an overpriced CPU. I searched on Google but I didn't find an accurate answer as to whether this is possible or not. So, is it possible?

not no, but hell NO!!

the only type of crossfire that works with your current 6870, would be to add a 6830, 6850, or another 6870. And that will xfire to the slowest card

there is no way to crossfire cross generation especially 2 generations lol, like you said its "bollocks"

-doober

PS tell the guy to stop lying, and if he does think its true then tell him hes wrong. also mind saying what the CPU is and for how much?
post #3 of 10
I'm pretty sure cross-generation Crossfire is only possible for the 57xx and 67xx cards.

Edit: Doesn't cover the 4xxx, but you get the point:

415
Taijin Kyofusho
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Taijin Kyofusho
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post #4 of 10
415
You cant do it. Notice how there arn't even any 4xxx series cards on the chart.
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post #5 of 10
Quote:
Originally Posted by Trull View Post

Ok, so basically there's this dude that's trying to sell me a CPU for more than I want to, and instead of rebating he says he will give me an HD 4850 for "free", because according to him I can pair it with my 6870 to gain performance in games.

Seems to me like that's bollocks and he's just trying to sell an overpriced CPU. I searched on Google but I didn't find an accurate answer as to whether this is possible or not. So, is it possible?

That will work just fine, i even "Cross SLI'ed" my amd 6990 and nvidia 590. thumb.gif
post #6 of 10
Thread Starter 
Yes, I understand I'm not able to make a Crossfire out of that... but I don't mean Crossfire, I mean one card in one slot and the other card in another slot without any Crossfire bridge, like you can do with nVidia for dedicated PhysX.
Quote:
Originally Posted by Doober View Post

PS tell the guy to stop lying, and if he does think its true then tell him hes wrong. also mind saying what the CPU is and for how much?

It's a C2Q Q9550. Dude's trying to sell it for 170€ (I'm sure you can figure out the conversion if you aren't from Europe), which I find excessive for a second hand C2Q, although in his favor I can say that it's an E0 stepping and supposedly a good batch which ought to overclock nicely.
Edited by Trull - 2/14/12 at 6:42pm
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post #7 of 10
Quote:
Originally Posted by Trull View Post

Yes, I understand I'm not able to make a Crossfire out of that... but I don't mean Crossfire, I mean one card in one slot and the other card in another slot without any Crossfire bridge, like you can do with nVidia for dedicated PhysX.

That is called HydraLogix, and you need a HydraLogix chip on your motherboard to support this feature, but you would be able to use them together that way.

However, it doesn't support as many games as SLI/Crossfire support and will have lower performance compared to regular CFX/SLI, but not by a huge margin. It will do most mainstream games though. I'm sure you can look up a list somewhere.

PS; Your motherboard in your sig rig does not have the Lucid HydraLogix chip to do this capability.
Edited by iinversion - 2/14/12 at 6:44pm
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post #8 of 10
Thread Starter 
Quote:
Originally Posted by iinversion View Post

That is called HydraLogix, and you need a HydraLogix chip on your motherboard to support this feature, but you would be able to use them together that way.
However, it doesn't support as many games as SLI/Crossfire support and will have lower performance compared to regular CFX/SLI, but not by a huge margin. It will do most mainstream games though. I'm sure you can look up a list somewhere.
PS; Your motherboard in your sig rig does not have the Lucid HydraLogix chip to do this capability.

Thanks, that's the answer I was looking for. Why did people think I was trying to make a Crossfire out of a 4850 and a 6870, anyway? arrowheadsmiley.png

+1 REP, btw.
Edited by Trull - 2/14/12 at 6:51pm
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post #9 of 10
Quote:
Originally Posted by Trull View Post

Thanks, that's the answer I was looking for. Why did people think I was trying to make a Crossfire out of a 4850 and a 6870, anyway? arrowheadsmiley.png
+1 REP, btw.

I kinda thought you were wanting to know if you could CFX them to begin with.. but then I saw the post about not using any sort of bridge. rolleyes.gif
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post #10 of 10
Ya I thought you were trying to Xfire too, because I knew that you can run an Nvidia for PhysX with an AMD as main GPU. Since neither GPU mentioned was NVIDIA I assumed you were not trying to do this. Happily we resolved the issue, but for future be as specific as possible with your questions and you wont get "confusing" answers


-Doober
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