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AMD Radeon HD 6740G2

AMD Radeon HD 6740G2

The AMD Radeon HD 6740G2 is the combination of a integrated AMD Radeon HD 6620G APU processor graphics card and a dedicated entry level AMD Radeon HD 6650M graphics card in CrossFire combination. It is called AMD Dual Graphics or asymmetric CrossFire and uses AFR (Alternate Frame Rendering) to render different frames on the two graphic cores. Therefore the combination also suffers from micro stuttering (different spaces between two images lead to stuttering altough the framerate is high enough for fluent gaming with only one GPU).

The performance of the Radeon HD 6740G2 depends greatly on the driver support for the used games. In some games the performance may even degrade by 10-15% compared to using only the APU graphics card. Currently (June 2011) only DirectX 10 and 11 graphics modes are supported and therefore lower settings and older games are not accelerated. Due to the micro stuttering and performance problems, Dual Graphics may impose more problems than bring performance gains.

The features like PureVideo HD (UVD3) or OpenCL support are similar to the two graphics cards.

As both graphics cards are rendering frames, the power consumption is clearly higher than using only one GPU.

Radeon HD 6000G2 Series

Radeon HD 6775G2 compare 880
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Radeon HD 6760G2 compare 880
Radeon HD 6740G2 880
Radeon HD 6720G2 compare 880
Radeon HD 6690G2 compare 880
Radeon HD 6680G2 compare 800
Radeon HD 6645G2 compare 560
Radeon HD 6640G2 compare 560
Radeon HD 6545G2 compare 480
Radeon HD 6540G2 compare 480
Radeon HD 6515G2 compare 400
Radeon HD 6510G2 compare 400
ArchitectureTerascale 2
Pipelines880 - unified
Shared Memoryno
APIDirectX 11, Shader 5.0
technology40 nm
Notebook Sizemedium sized
Date of Announcement14.06.2011

Benchmarks

3DMark Vantage
3DM Vant. Perf. total +
3DM Vant. Perf. GPU no PhysX +
3DMark 06 3DMark 06 - Standard 1280x1024 +
3DMark 06
min: 6412     avg: 6754     median: 6753.5 (9%)     max: 7095 Points
Unigine Heaven 2.1 - Heaven 2.1 high
min: 17.5     avg: 17.7     median: 17.7 (3%)     max: 17.8 fps
Windows 7 Experience Index - Win7 Graphics
min: 5.2     avg: 5.3     median: 5.3 (67%)     max: 5.3 Points
Cinebench R10 Cinebench R10 Shading (32bit) +
Cinebench R11.5 Cinebench R11.5 OpenGL 64 Bit +
Cinebench R11.5 - Cinebench R11.5 OpenGL 64 Bit
min: 14.9     avg: 22.4     median: 23.3 (8%)     max: 27.9 fps
- Range of benchmark values for this graphics card
- Average benchmark values for this graphics card
* Smaller numbers mean a higher performance

Game Benchmarks

The following benchmarks stem from our benchmarks of review laptops. The performance depends on the used graphics memory, clock rate, processor, system settings, drivers, and operating systems. So the results don't have to be representative for all laptops with this GPU. For detailed information on the benchmark results, click on the fps number.

Anno 2070

Anno 2070

2011
low 1024x768
med. 1366x768
high 1366x768
» With all tested laptops playable in detail settings med..
low 1280x720
med. 1366x768
high 1366x768
» The benchmarks indicate that the game is not playable in the tested settings.
low 1024x768
med. 1366x768
high 1366x768
» With all tested laptops playable in detail settings low.
Fifa 12

Fifa 12

2011
low 800x600
med. 1024x768
high 1360x768
» With all tested laptops playable in detail settings high.
F1 2011

F1 2011

2011
low 800x600
med. 1024x768
high 1366x768
» With all tested laptops playable in detail settings low.
low 1024x768
76  fps    + Compare
high 1366x768
28.6  fps    + Compare
» With all tested laptops playable in detail settings low.
Dirt 3

Dirt 3

2011
low 800x600
68  fps    + Compare
med. 1024x768
40.7  fps    + Compare
high 1360x768
27.7  fps    + Compare
» With all tested laptops playable in detail settings med..
Crysis 2

Crysis 2

2011
low 800x600
med. 1024x768
high 1366x768
» With all tested laptops playable in detail settings low.
Total War: Shogun 2

Total War: Shogun 2

2011
low 1024x768
87.6  fps    + Compare
med. 1280x720
27.6  fps    + Compare
» With all tested laptops playable in detail settings low.
med. 1024x768
38.3  fps    + Compare
high 1360x768
26.8  fps    + Compare
» With all tested laptops playable in detail settings med..
low 1024x768
101.2  fps    + Compare
med. 1360x768
41  fps    + Compare
high 1360x768
29.5  fps    + Compare
» With all tested laptops playable in detail settings med..
low 800x600
52.4  fps    + Compare
med. 1360x768
33.4  fps    + Compare
» With all tested laptops playable in detail settings low.
low 1024x768
68.8  fps    + Compare
med. 1366x768
61  fps    + Compare
high 1366x768
48.8  fps    + Compare
» With all tested laptops playable in detail settings high.
Risen

Risen

2009
low 800x600
49  fps    + Compare
med. 1024x768
33.1  fps    + Compare
high 1366x768
25  fps    + Compare
» With all tested laptops playable in detail settings low.

For more games that might be playable and a list of all games and graphics cards visit our Gaming List

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