2 x Radeon 7770...Unable to setup Crossfire.

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keithgriffin1962

Feb 16, 2018
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I have a Dell 630i that came with 2 3850 Radeons. After a few years I was unable to get Crossfire mode , as there was no provision to set it up in the Radeon software settings. I purchased 2x Radeon 7770, set them up and am still not able to acquire Crossfire. In the device manager it shows one as working and the other as "disabled". Not had Crossfire for a few years now, so wondering if anyone has any ideas??
Dell 630i
8Gb Crucial ram
1 x 2Tb hdd, 1 x 500Gb hdd
Standard as fitted Dell motherboard
Q6640 2.4 Ghz cpu.
2x Radeon 7770 you.
Thanks in anticipation!!
 
Solution
Barty1884
From what I can find, the issue is in the Dell board. The 630i is an nForce chipset (native SLI support) - and only Dell custom drivers would allow CFx of specific cards.

Given you're likely not on XP or Vista (that the Dell drivers were provided for), nor are you running cards that Dell supported in that system/board..... you're probably out of luck re: CrossFire.

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Barty1884

Barty1884

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Apr 16, 2015
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From what I can find, the issue is in the Dell board. The 630i is an nForce chipset (native SLI support) - and only Dell custom drivers would allow CFx of specific cards.

Given you're likely not on XP or Vista (that the Dell drivers were provided for), nor are you running cards that Dell supported in that system/board..... you're probably out of luck re: CrossFire.

 
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M

mgallo848

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Apr 4, 2018
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Correct, but I gave him an easier answer to go with rather than go down most likely a long and pointless road.

Dell sold the PC with a "modified" driver that was only released by Dell for 32 bit driver support. As soon as you update either the graphics driver, the OS to a different service pack or a newer OS you would break the crossfire setup.

Being that the "modified" drivers are severely old and outdated, they would most likely have to be updated to work with newer games anyway.

I would still sell one or both cards and get a single, faster newer card.

 
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Barty1884

Barty1884

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Not disagreeing with the suggestion mgallo, just pointing out that

That PC only supports Nvidia dual card setups (SLI), not AMD crossfire
Click to expand...

Is not strictly accurate.

On a later OS (or even 64bit), or after an update etc, the "support" is gone - but it *can* support CFx in a limited form.


Realistically, on a Q6640 I wouldn't look to pair anything much greater than a GT 1030 / GTX 750TI.
While a single 7770 falls a little short of either card, it's in the same ballpark & a pretty well balanced rig as-is.
 
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mgallo848

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"limited form"

This was the long, pointless road I was referring to. He may go through all the time/effort to "possibly" get it to work only to find out it still will not work properly with certain games/applications.

 
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