Results: Metro: Last Light
At the lowest detail settings, none of these graphics cards manage more than a 25 FPS minimum. Dual Graphics only improves the average frame rate when a DDR3-equipped Radeon HD 6670 is used; the boards with GDDR5 exhibit no benefit with the feature turned on.
Although the Radeon HD 7750 registers a minimum frame rate of 25 FPS, it rarely dips below 30 FPS. Thus, we consider the 7750 a suitable card for Metro: Last Light at these detail settings.
The Radeon HD 6670 complemented by DDR3 does poorly, as do the A10-6800K and 6670-based Dual Graphics configurations. Only the cards with GDDR5 memory demonstrate suitably low frame time variance.
Again, because Dual Graphics is not particularly playable, we're skipping the video comparison.