Notebookcheck

AMD Radeon HD 6620G + HD 7670M Dual Graphics

AMD Radeon HD 6620G + HD 7670M Dual Graphics

The AMD Radeon HD 6620G + HD 7670M Dual Graphics is the combination of a integrated AMD Radeon HD 6620G APU processor graphics card and a dedicated AMD Radeon HD 7670M 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 Dual Graphics solution greatly depends 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. Due to the micro stuttering and performance problems, Dual Graphics may impose more problems than bring performance gains. Therefore, we rate the performance on average on a level with the Radeon HD 7670M alone.

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.

ManufacturerAMD
AMD Radeon HD 7400M Series
Radeon HD 6620G + HD 7670M Dual Graphics 880 @ 400 / 600 MHz? Bit @ 1800 MHz
Radeon HD 6620G + HD 7450M Dual Graphics 560 @ 400 / 700 MHz? Bit @ 1800 MHz
Radeon HD 6520G + HD 7450M Dual Graphics 480 @ 400 / 700 MHz64 Bit @ 1800 MHz
Radeon HD 6480G + HD 7450M Dual Graphics 400 @ 593 / 700 MHz64 Bit @ - / 1800 MHz
ArchitectureTerascale 2
Pipelines880 - unified
Core Speed *400 / 600 MHz
Memory Speed *1800 MHz
Shared Memoryyes
DirectXDirectX 11, Shader 5.0
technology32+40nm nm
Date of Announcement08.02.2012
* The specified clock rates are only guidelines for the manufacturer and can be altered by them.

Benchmarks

3DMark (2013) - Fire Strike Standard Graphics 1920x1080
0%
100%
min: 777      avg: 777 (4%)     median: 777 (4%)     max: 777 Points
3DMark (2013) - Cloud Gate Standard Graphics 1280x720
0%
100%
min: 9719      avg: 9719 (8%)     median: 9719 (8%)     max: 9719 Points
3DMark (2013) - Cloud Gate Standard Score 1280x720
0%
100%
min: 4680      avg: 4680 (17%)     median: 4680 (17%)     max: 4680 Points
ComputeMark v2.1 - Normal, Score 1024x600
0%
100%
min: 748      avg: 748 (9%)     median: 748 (9%)     max: 748 Points
3DMark Vantage - P Result no PhysX 1280x1024
0%
100%
min: 5400      avg: 5400 (11%)     median: 5400 (11%)     max: 5400 Points
- Range of benchmark values for this graphics card
- Average benchmark values for this graphics card

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 detailled information on the benchmark results, click on the fps number.

StarCraft II: Heart of the Swarm
low 1024x768
96.1  fps      Compare
med. 1366x768
43.4  fps      Compare
high 1366x768
34.9  fps      Compare
ultra 1920x1080
16  fps      Compare
» With all tested laptops playable in detail settings med..
Tomb Raider
low 1024x768
89  fps      Compare
med. 1366x768
50.4  fps      Compare
high 1366x768
30.6  fps      Compare
ultra 1920x1080
12.8  fps      Compare
» With all tested laptops playable in detail settings med..
Dead Space 3
low 1024x768
92.5  fps      Compare
med. 1366x768
45.2  fps      Compare
high 1366x768
35.3  fps      Compare
ultra 1920x1080
20.9  fps      Compare
» With all tested laptops playable in detail settings high.
Hitman: Absolution
low 1024x768
19.6  fps      Compare
med. 1366x768
17.6  fps      Compare
high 1366x768
12.7  fps      Compare
» The benchmarks indicate that the game is not playable in the tested settings.
Fifa 13

Fifa 13

2012
low 1024x768
120.5  fps      Compare
med. 1366x768
90.5  fps      Compare
high 1366x768
88.9  fps      Compare
ultra 1920x1080
54.2  fps      Compare
» With all tested laptops playable in detail settings ultra.
F1 2012

F1 2012

2012
low 1024x768
35  fps      Compare
med. 1366x768
29  fps      Compare
high 1366x768
27  fps      Compare
» The benchmarks indicate that the game is not playable in the tested settings.
Dirt Showdown
low 1024x768
41  fps      Compare
med. 1366x768
30.5  fps      Compare
high 1366x768
29.6  fps      Compare
» With all tested laptops playable in detail settings low.
Anno 2070

Anno 2070

2011
low 1024x768
103.8  fps      Compare
med. 1366x768
41  fps      Compare
high 1366x768
27.4  fps      Compare
» With all tested laptops playable in detail settings med..