APU usage low in crossfire

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InvalidError
Not all code writing styles will automatically work with crossfire/SLI. Maybe your sample does something in a way the drivers cannot figure how to do with crossfire... or in a way AMD knows to cause trouble on their drivers or hardware so AMD disables crossfire when it is detected.

If you own any game that officially supports crossfire, you could try that.
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InvalidError

InvalidError

Titan
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May 18, 2007
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he HD6670 is VLIW architecture (the 6xxx are little more than updated 5xxx) [strike] while the HD8670D is GCN architecture.[/strike]

Crossfire only works between same-architecture models. You need a HD7xxx / R7-2xx series GPU if you want to crossfire with your APU.

Edit: gotta love AMD recycling model numbers out of sequence.
 
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InvalidError

InvalidError

Titan
Moderator
May 18, 2007
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Assuming crossfire is really enabled in your configuration, it could simply be that your demo code requires some further tweaking to make it more crossfire-friendly. It is not uncommon for games to require patches before they will work with crossfire or SLI.
 
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InvalidError

InvalidError

Titan
Moderator
May 18, 2007
23,815
5,265
108,890
Not all code writing styles will automatically work with crossfire/SLI. Maybe your sample does something in a way the drivers cannot figure how to do with crossfire... or in a way AMD knows to cause trouble on their drivers or hardware so AMD disables crossfire when it is detected.

If you own any game that officially supports crossfire, you could try that.
 
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