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Problem AMD A8-3850 & hd 6670 crossfire

Last response: in Graphics & Displays
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March 17, 2012 1:20:35 PM

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


BIOS


6550D


6670
March 21, 2012 10:57:42 PM

I hope someone gives you an answer as I have the A8-3870K without a card and was looking at purchasing a 6670 for just this reason.
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March 22, 2012 1:29:35 PM

until now i havent got single feedback from asus F1A75-M LE user. and this problem still not solve. for time being i only use single GPU.
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March 22, 2012 7:03:54 PM

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.
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March 24, 2012 4:17:24 PM

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
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March 27, 2012 3:07:51 PM

tathen said:
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.


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
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April 1, 2012 3:03:41 PM

tathen said:
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.


vga/dvi/hdmi cable need to connect to onboard port or on PCI graphics card's port?
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April 13, 2012 3:52:41 PM

still can't to make it.. already follow 100% of Tathen's post...
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!