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Need some help

Forum Graphic & Displays : ATI - Need some help

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lonewlf   10-04-2009 at 11:50:36 PM

Hi..I bought this motherboard GA-MA785GMT-UD2H it has a ATI 4200 built in..and the board says i can crossfire this..its onboard..and i put in another ATI 4850 1 GB and i wanted to crossfire these two but afte installing catalyst i cant find the "crossfire" option in the graphics menu. some help would be appreciated.. thanks :sarcastic:

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Bronze Graphics badge hunter315   10-05-2009 at 12:03:17 AM

the board supports "hybrid crossfire" which is very different from normal crossfire, it is only really useful when using a low end card as the IGP is very week and will provide no gain and may even provide a performance hit since the CPU has to feed 2 GPUs. The HD 4200 is about as strong as an HD 2600 discrete card, it will provide you no benefit.

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lonewlf   10-05-2009 at 12:12:05 AM

thats ok..i just wanted to see how it would work..the xfx ati 4850 i have is
crossfire x and would be helpful if i could just try it out..i just cant find the crossfire option in graphics menu

Reply to lonewlf
Ragsters   10-05-2009 at 05:36:57 AM

Remember to disable the on board video in the bios when using the 4850.


Message edited by Ragsters on 10-05-2009 at 05:37:11 AM
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buzznut   10-05-2009 at 06:09:39 AM

The hybrid crossfire won't work with the HD4850. Hybrid crossfire to the best of my knowledge only works with the HD3450 and HD3470 model graphics cards. I also wished that hybrid crossfire would work with other 4000 series cards, but after a lot of research I found this to not be the case.

Even if you could get it to "work", it would not be beneficial to you as the onboard graphics are quite a lot slower than the HD4850.

For crossfire X you would need to have a second HD4850, and a second PCI-x slot (16X). I am unsure if your board has this, but I doubt it. Your HD 4850 is crossfire x CAPABLE, but unless you have a second card that functionality will not be available.

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