Help: Hybrid CrossfireX with onboard HD4200 and HD6870

[Je-Tze]

I have an Asrock 939A785GMH/128M MoBo which happens to supposedly have Hybrid CrossfireX capabillity, and it has onboard HD4200 gfx. I use an XFX HD6870 1GB for my gfx. Shouldn't i be able to Crossfire these? Not critical really, the 6870 is fine, but it seems nice to get a little boost, and to know the 4200 isn't going to waste. AMD's Vision Control Center--no longer "Catalyst" apparently--seems to recognize the onboard gxf and install the proper driver for them, but it offers no option for Crossfire in the settings. Is there any thing i can do? What am i missing?

 

[iam2thecrowe]

no you cant crossfire from different series. and no you wouldnt get any boost anyway it would just bring your 6870 down.

 

[Je-Tze]

ohh =-0
I thought the Hybrid Croosfirex allowed that...?

 

[iam2thecrowe]

you can only crossfire yout 6870 with another 6870, 6850 or 6790
http://sites.amd.com/PublishingImages/Public/Graphic_Illustrations/WebBannerJPEG/AMD_CrossfireX_Chart_1618W.jpg
http://www.tomshardware.com/forum/269346-33-785g-hybrid-crossfire

 

[jyjjy]

Your board can only use hybrid crossfire with rather old and weak cards like the HD3450. It was never very useful to begin with so just forget about it.

 

[Je-Tze]

Oh well... thanks for the prompt answers.
Would've been nice, but it's no loss really.

 

[tazman4000]

just finished doing a hybrid crossfire with a GA-A75-D3H motherboard and a Sapphire HD 6570 pci-e 2g ddr3 card
and its working quite well so far
just make sure you have your bios set so that your on board video boots first if you dont do that than windows will only see the card video and catalyst vision center will automatically start crossfire if i can see both the on-board and pci-e card

 

[vinix]

just finished doing a hybrid crossfire with a GA-A75-D3H motherboard and a Sapphire HD 6570 pci-e 2g ddr3 card
and its working quite well so far
just make sure you have your bios set so that your on board video boots first if you dont do that than windows will only see the card video and catalyst vision center will automatically start crossfire if i can see both the on-board and pci-e card

Your configuration is supported by design. But OP is requested for 785G(Radeon HD 4200 onboard) and Radeon HD 6870 combination, which is unsupported in official documents.

If someone know how to break the restriction of Hybrid Crossfire, please let me know. I want to try it on my 790GX/5870 config.