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 @ 0.4 GHz	? Bit @ 1800 MHz
Radeon HD 6620G + HD 7450M Dual Graphics	560 @ 0.4 GHz	? Bit @ 1800 MHz
Radeon HD 6520G + HD 7450M Dual Graphics	480 @ 0.4 GHz	64 Bit @ 1800 MHz
Radeon HD 6480G + HD 7450M Dual Graphics	400 @ 0.59 GHz	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

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

5.6 pt (6%)

AMD Radeon HD 8180 -75%

...

AMD Radeon R7 M460 -3%

NVIDIA GeForce GT 730M -3%

NVIDIA GeForce GT 735M -3%

AMD Radeon R7 M440 -2%

Intel HD Graphics 510 -2%

AMD Radeon HD 8650G -2%

NVIDIA GeForce 920M -1%

NVIDIA Quadro M520 -1%

AMD Radeon R5 (Bristol Ridge) 0%

AMD Radeon HD 6620G + HD 7670M Dual Graphics

AMD Radeon 520 1%

AMD Radeon R6 M255DX 1%

NVIDIA GeForce 710M 2%

AMD Radeon R7 M445 2%

AMD Radeon R7 (Carrizo) 2%

AMD Radeon R7 M360 2%

NVIDIA GeForce 830M 3%

AMD Radeon HD 8850M 3%

AMD Radeon HD 8750M 4%

...

AMD Radeon RX 6800 XT (Desktop) 1615%

100%

3DMark - 3DMark Cloud Gate Score

4680 Points (6%)

+ 1 benchmarks and specifications + Show comparison chart

3DMark - 3DMark Cloud Gate Graphics

9719 Points (5%)

+ 1 benchmarks and specifications + Show comparison chart

3DMark - 3DMark Fire Strike Standard Score

603 Points (2%)

+ 1 benchmarks and specifications + Show comparison chart

3DMark - 3DMark Fire Strike Standard Graphics

777 Points (2%)

+ 1 benchmarks and specifications + Show comparison chart

3DMark - 3DMark Ice Storm Graphics

57082 Points (8%)

+ 1 benchmarks and specifications + Show comparison chart

3DMark 11 - 3DM11 Performance Score

1604 Points (4%)

+ 1 benchmarks and specifications + Show comparison chart

3DMark 11 - 3DM11 Performance GPU

1600 Points (3%)

+ 1 benchmarks and specifications - Hide comparison chart

AMD Radeon HD 6250 -89%

...

AMD Radeon HD 6755G2 -4%

NVIDIA Quadro 3000M -4%

Intel UHD Graphics 617 -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%

Qualcomm Adreno 680 0%

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

AMD Radeon HD 6620G + HD 7670M Dual Graphics

AMD Radeon RX Vega 3 1%

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 G7 (Lakefield GT2 64 EU) 4%

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

AMD Radeon R5 M330 5%

AMD Radeon R5 M430 6%

...

NVIDIA GeForce RTX 3090 3506%

100%

3DMark Vantage
3DM Vant. Perf. total +

3DM Vant. Perf. GPU no PhysX +

3DMark 06 3DMark 06 - Standard 1280x1024 +

Windows 7 Experience Index - Win7 Gaming graphics

5.9 Points (75%)

+ 1 benchmarks and specifications + Show comparison chart

Windows 7 Experience Index - Win7 Graphics

4.3 Points (54%)

+ 1 benchmarks and specifications + Show comparison chart

Cinebench R10 Cinebench R10 Shading (32bit) +

Cinebench R11.5 Cinebench R11.5 OpenGL 64 Bit +

LuxMark v2.0 64Bit - LuxMark v2.0 Room GPU

148 Samples/s (2%)

+ 1 benchmarks and specifications + Show comparison chart

LuxMark v2.0 64Bit - LuxMark v2.0 Sala GPU

309 Samples/s (1%)

+ 1 benchmarks and specifications + Show comparison chart

ComputeMark v2.1 - ComputeMark v2.1 Result

748 points (2%)

+ 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 detailed information on the benchmark results, click on the fps number.