AMD Radeon HD 7660G + HD 7670M Dual Graphics

The AMD Radeon HD 7660G + HD 7670M Dual Graphics is the combination of a integrated AMD Radeon HD 7660G APU processor graphics card and a dedicated entry level 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 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. Only in best case scenarios the performance of a GT 640M is possible. Therefore, 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.

Manufacturer

AMD

Radeon HD 7600M Series

Radeon HD 7690M XT	480 @ 725 MHz	128 Bit @ 3600 MHz
Radeon HD 7690M	480 @ 600 - 725 MHz	128 Bit @ 3600/1800 MHz
Radeon HD 7660G + HD 7670M Dual Graphics	862 @ 685 / 600 MHz	128 Bit @ 1800 MHz
Radeon HD 7640G + HD 7670M Dual Graphics	736 @ 655 / 600 MHz	128 Bit @ 1800 MHz
Radeon HD 7520G + HD 7670M Dual Graphics	736 @ 655 / 600 MHz	128 Bit @ 1800 MHz
Radeon HD 7670M	480 @ 600 MHz	128 Bit @ 1800 MHz
Radeon HD 7650M	480 @ 450 - 550 MHz	128 Bit @ 1800 MHz
Radeon HD 7630M	480 @ 450 MHz	128 Bit @ 1800 MHz
Radeon HD 7640G + HD 7610M Dual Graphics	656 @ 655 / 450 MHz	128 Bit @ 1800 MHz
Radeon HD 7610M	400 @ 450 MHz	128 Bit @ 1600 MHz

Architecture

Terascale 2

Pipelines

862 - unified

Core Speed

685 / 600 MHz

Memory Speed

1800 MHz

Memory Bus Width

128 Bit

Memory Type

DDR3,GDDR5

Shared Memory

DirectX

DirectX 11, Shader 5.0

technology

40 / 32 nm

Notebook Size

medium sized

Date of Announcement

15.05.2012

Benchmarks

Performance Rating - 3DMark 11 + Fire Strike + Time Spy

6.8 pt (7%)

Intel HD Graphics (Bay Trail) -79%

...

NVIDIA GeForce 820M -6%

Intel HD Graphics 6000 -6%

AMD Radeon HD 8850M -5%

Intel HD Graphics 620 -5%

Intel Iris Graphics 6100 -4%

AMD Radeon HD 8570D -2%

AMD Radeon HD 7660D -2%

AMD Radeon HD 7670M -1%

AMD Radeon HD 8650G + HD 8670M Dual Graphics 0%

AMD Radeon HD 7660G + HD 7670M Dual Graphics

NVIDIA GeForce MX110 0%

NVIDIA GeForce 940M 0%

AMD Radeon HD 8650G + HD 8570M Dual Graphics 0%

NVIDIA GeForce GT 740M 1%

AMD Radeon R6 M340DX 1%

NVIDIA GeForce 930M 2%

NVIDIA GeForce 845M 2%

NVIDIA GeForce 840M 2%

NVIDIA Quadro K1100M 2%

...

NVIDIA GeForce GTX 1080 SLI (Laptop) 1330%

100%

3DMark - Cloud Gate Standard Score 1280x720

4202 Points (11%)

+ 1 benchmarks and specifications + Show comparison chart

3DMark - Cloud Gate Standard Graphics 1280x720

6635 Points (8%)

+ 1 benchmarks and specifications + Show comparison chart

3DMark - Fire Strike Score 1920x1080

719 Points (6%)

+ 1 benchmarks and specifications + Show comparison chart

3DMark - Fire Strike Graphics 1920x1080

875 Points (6%)

+ 1 benchmarks and specifications + Show comparison chart

3DMark - Ice Storm Standard Graphics 1280x720

61913 Points (8%)

+ 1 benchmarks and specifications + Show comparison chart

3DMark 11 - Performance 1280x720

min: 1988 avg: 2073 median: 2073.5 (12%) max: 2171 points

+ 6 benchmarks and specifications + Show comparison chart

3DMark 11 - Performance GPU 1280x720

min: 2031 avg: 2118 median: 2112 (11%) max: 2252 points

+ 5 benchmarks and specifications - Hide comparison chart

AMD Radeon HD 6250 -92%

...

AMD Radeon R7 384 Cores (Kaveri Desktop) -6%

NVIDIA GeForce GTX 470M -5%

AMD Radeon HD 8650G + HD 8570M Dual Graphics -5%

AMD Radeon R7 M360 -5%

AMD Radeon 520 -5%

AMD Radeon HD 7750M -2%

NVIDIA Quadro 4000M -1%

NVIDIA GeForce GT 650M -1%

AMD Radeon HD 7770M 0%

AMD Radeon HD 7660G + HD 7670M Dual Graphics

NVIDIA GeForce MX110 0%

AMD Radeon R7 M460 1%

NVIDIA GeForce 930M 1%

NVIDIA GeForce GTX 480M 3%

AMD Radeon HD 8790M 3%

Intel Iris Graphics 540 3%

AMD Radeon R6 M255DX 4%

AMD Radeon R7 M445 4%

NVIDIA GeForce GT 745M 4%

...

AMD Radeon RX 570 (Desktop) 796%

100%

3DMark Vantage
P Result 1280x1024 +

P GPU no PhysX 1280x1024 +

3DMark 03 - Standard 1024x768

min: 21250 avg: 21704 median: 21905 (15%) max: 21958 Points

+ 3 benchmarks and specifications + Show comparison chart

3DMark 05 - Standard 1024x768

min: 11763 avg: 11878 median: 11878 (32%) max: 11993 Points

+ 2 benchmarks and specifications + Show comparison chart

3DMark 06 Standard 1280x1024 +

Unigine Heaven 2.1 - high, Tesselation (normal), DirectX11 1280x1024

11.9 fps (6%)

+ 1 benchmarks and specifications + Show comparison chart

Windows 7 Experience Index - Gaming graphics

min: 6.3 avg: 6.3 median: 6.3 (80%) max: 6.4 points

+ 4 benchmarks and specifications + Show comparison chart

Windows 7 Experience Index - Graphics

min: 5.8 avg: 6 median: 5.9 (75%) max: 6.3 points

+ 4 benchmarks and specifications + Show comparison chart

Cinebench R10 Shading 32Bit +

Cinebench R11.5 OpenGL 64Bit +

- 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.