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.

Manufacturer

AMD

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 (compare)	560 @ 400 / 700 MHz	? Bit @ 1800 MHz
Radeon HD 6520G + HD 7450M Dual Graphics (compare)	480 @ 400 / 700 MHz	64 Bit @ 1800 MHz
Radeon HD 6480G + HD 7450M Dual Graphics (compare)	400 @ 593 / 700 MHz	64 Bit @ - / 1800 MHz

Architecture

Terascale 2

Pipelines

880 - unified

Core Speed

400 / 600 MHz

Memory Speed

1800 MHz

Shared Memory

yes

DirectX

DirectX 11, Shader 5.0

technology

32+40nm nm

Date of Announcement

08.02.2012

Benchmarks

3DMark - Cloud Gate Standard Score 1280x720

4680 Points (9%)

+ 1 benchmarks and specifications + Show comparison chart

3DMark - Cloud Gate Standard Graphics 1280x720

9719 Points (5%)

+ 1 benchmarks and specifications + Show comparison chart

3DMark - Fire Strike Score 1920x1080

603 Points (2%)

+ 1 benchmarks and specifications + Show comparison chart

3DMark - Fire Strike Graphics 1920x1080

777 Points (2%)

+ 1 benchmarks and specifications + Show comparison chart

3DMark - Ice Storm Standard Graphics 1280x720

57082 Points (8%)

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3DMark 11 - Performance 1280x720

1604 points (5%)

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3DMark 11 - Performance GPU 1280x720

1600 points (3%)

+ 1 benchmarks and specifications - Hide comparison chart

Intel Graphics Media Accelerator (GMA) 3600

...

AMD Radeon HD 6720G2 -8%

Intel HD Graphics 620 -7%

AMD Radeon HD 6755G2 -4%

NVIDIA Quadro 3000M -4%

AMD Radeon HD 8670D -3%

AMD Radeon HD 6740G2 -1%

AMD Radeon HD 7640G + HD 7610M Dual Graphics -1%

AMD Radeon R5 M240 -1%

AMD Radeon HD 8450G + Radeon HD 8570M Dual Graphics 0%

AMD Radeon HD 6620G + HD 7670M Dual Graphics

AMD Radeon HD 7520G + HD 7670M Dual Graphics 1%

NVIDIA GeForce GTX 460M 2%

AMD Radeon R5 M320 3%

Intel Iris Graphics 6100 4%

Intel UHD Graphics 620 4%

AMD Radeon HD 7640G + HD 7670M Dual Graphics 4%

AMD Radeon R5 M330 5%

Intel HD Graphics 630 5%

AMD Radeon R5 M430 6%

...

NVIDIA GeForce GTX 1070 SLI (Desktop) 2568%

100%

3DMark Vantage
P Result 1280x1024 +

P GPU no PhysX 1280x1024 +

3DMark 06 Standard 1280x1024 +

Windows 7 Experience Index - Gaming graphics

5.9 points (75%)

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Windows 7 Experience Index - Graphics

4.3 points (54%)

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Cinebench R10 Shading 32Bit +

Cinebench R11.5 OpenGL 64Bit +

LuxMark v2.0 64Bit - Room GPUs-only

148 Samples/s (3%)

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LuxMark v2.0 64Bit - Sala GPUs-only

309 Samples/s (3%)

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ComputeMark v2.1 - Normal, Score 1024x600

748 Points (3%)

+ 1 benchmarks and specifications + Show comparison chart

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