Problem AMD A8-3850 & hd 6670 crossfire

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ahmadi

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Mar 17, 2012
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hii.. here is my desktop spec
proc: amd a8-3850
ram : 4gb ddr3
mobo: asus F1A75-M LE
HDD: 500gb WD caviar blue
GC : XFX HD 6670

AMD APU a8 has its own graphic proc build in (HD 6550D)
i want to crossfire with my XFX HD 6670.. few day searching around for answer.. still cant do it.
the system detect both 6550D and 6670.. but no option to crossfire..
installed latest driver & bios.. but still cant find how to enable crossfire...

no option to enable crossfire in AMD VISION control center.

here is my printscreen:
AMD over drive
amdoverdrive1.jpg


BIOS
biosv.jpg


6550D
6550d.jpg


6670
6670x.jpg
 

tathen

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Mar 22, 2012
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I was having the same problem and was able to get Vision Center to offer dual-graphics (I 3rd choice under the performance tab). Here's what I did:

1) enter BIOS and set the integrated graphics to from 'auto' to 'force'

2) remove pci graphics card

3) restart and update driver (which took a 2nd restart to complete)

4) re-install pci graphics card

5) enter BIOS and set primary to graphics to the onboard card

6) restart and go directly to the Vision Center where a new tab is available under Performance

The problem seems to arise from the APU not being initialized on startup. Some of my steps likely are redundant or had no impact, but I until someone more knowledgeable posts this should get you started.
 

MikeMM

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Mar 24, 2012
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10,510


Hi tathen,

you also run A8 3870 and crossfire with Asus DH6670 or ?

Why did you have to remove the pci card ?

GREAT instructions, thanks

on your item 5: enter BIOS and set primary to graphics to the onboard card, I am runing an ASUS F1A75-I Mother b, and is using the UEFI BIOS , I cant find that setting ?
but in my vision center 12.2 I got the AMD Radeon Dual graphics showing up after following your instructions and it was enabled.

How to find out if I am running crossfire
 

ahmadi

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Mar 17, 2012
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10,510


vga/dvi/hdmi cable need to connect to onboard port or on PCI graphics card's port?
 
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