Crossfire

Theblackoutow

Theblackoutow

Member
First question, can you crossfire a better card with a card that insn't the same. What I mean by this is I currently have the ATI Radeon 5850, is their anyway I could crossfire a 5870, or maybe even a 5970 with my 5850? Also, can someone please check if my mother board supports crossfire. System specs are in my signature.

Thank you, Ryan.
 
Yes you can overclock it with a different card but i think you need to make the cards to have the same clock speeds. Lets say if you overclock it with 5970 i think you need to downclock the 5970 to the same clock as the 5850. About your motherboard which version is? because there are few models like yours.
 
It's not worth getting 5970. It's too expensive. 5850 is a great card. :) Well if you already have the 5970 then yeah you can use it.
 
The cards do not need to have the same clock speed when you crossfire. Also a 5970 has the clockspeeds of a 5850 out of the box. the only difference is steam processors.
 
lubo4444 said:
Yeah but the 5970 will downclock to the 5850. :)
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I can run both my GPUs in my 5970 at different clocks though. So I'd assume the same can be done with any cards.

*Edit*

Hmm maybe I cannot. Best bet would to be to just get another 5850. They are great cards anyways. You can always O.C. them to 5870 clocks.

*EDIT AGAIN*

Just checked. I can run both my GPUs at different clocks. And I just asked my brother who has to 5870s in CF and he can run his at different clocks as well.
 
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So does that mean I could use the 5850 and the 5970 in the same computer without haveing to downclock the 5970? Also would I see a noticable difference in frame rates in games. Also, have either of you checked if my mobo supports crossfire. Or would it be better to just sell the 5850 and use the 5970 as my main card or just wait until a new ATI card to come out.
 
Leopold Butters said:
I can run both my GPUs in my 5970 at different clocks though. So I'd assume the same can be done with any cards.

*Edit*

Hmm maybe I cannot. Best bet would to be to just get another 5850. They are great cards anyways. You can always O.C. them to 5870 clocks.

*EDIT AGAIN*

Just checked. I can run both my GPUs at different clocks. And I just asked my brother who has to 5870s in CF and he can run his at different clocks as well.
Click to expand...

Well, from what i read i know that the better card downclocks to the one that's weaker. But i really havent tried to CF. :)

Edit: But yeah like you said it's possible to overclock the 5850 to the speed of 5870 and run them in CF.
 
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Theblackoutow said:
Yeah, it's a great card, but for some reason when I try to record my game footage the frame rates dip a lot.
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Using fraps? open the fraps thing up and tell it to record at a higher framerate. 30 is the default. if you set it too high it slows down even more because it can't keep up. 45-50 usually works. (it did on my 4850 anyway, fps when recording was around that mark.)
 
Well, you do Have a second PCI-E slot 2.0x16 at x4mode. Which is not a full PCI-E 2.0x16. At this point I am not longer any help lol. I have no clue about the x4 or x16 slots. Hopefulyl someone else can help you with that.
 
Theblackoutow said:
Quad-GPU Crossfire Support! okay, so I guess it will work with Crossfire. This is according to this http://www.newegg.com/Product/Product.aspx?item=N82E16813131604
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Only with Dual GPU cards. YOu only have 2 PCI-E slots. So here is what I found out. The 2.0 x16 or x4 is how much bandwidth the slot has. x4 has less than x16. I also found a chart comparing the 5870 in these slots (right here http://www.techpowerup.com/reviews/AMD/HD_5870_PCI-Express_Scaling/25.html) there is hardly any difference. So if you do add another 5850 it will work fine.
 
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