AMD's Kaveri APUs have now been officially launched and while we already had a chance to see some performance numbers there was little to none talk regarding Dual Graphics feature. Apparently, judging from a report from Wccftech.com, it appears that Dual Graphics actually
Since AMD Kaveri APUs actually features the R7 based Radeon graphics it really does not come as a surprise that Dual Graphics option is only limited to those R7 discrete graphics cards, but we honestly hoped that it would be available for any R7 graphics card and not just limited to R7 240 and R7 250 graphics cards which are currently the only one featuring DDR3 memory.
In case you missed it earlier, the Dual Graphics technology actually allows a discrete graphics card to work in Crossfire mode with the GPU inside the APU.
According to AMD's presentation, the R7 240 2GB DDR3 graphics card, when paired up with AMD's Kaveri A10-7850K, should be enough to give "playable" framerate in both Bioshock Infinite and Tomb Raider, running on high settings at 1080p resolution. Since AMD has certain optimizations implemented for these two games, bear in mind that it just might not work in some other games, at least until AMD issues a new driver.
The fact that the Dual Graphics is apparently limited to R7 250 and the R7 240, DDR3-equipped, graphics cards makes the technology quite pointless, unless, of course, you are looking to make a SFF rig or HTPC.
Source:
Wccftech.com.