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AMD Radeon HD 6620G + HD 7450M Dual Graphics

AMD Radeon HD 6620G + HD 7450M Dual Graphics

The AMD Radeon HD 6620G + HD 7450M Dual Graphics is the combination of a integrated AMD Radeon HD 6620G APU processor graphics card and a dedicated entry level AMD Radeon HD 7450M 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. 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.

AMD Radeon HD 7400M Series

Radeon HD 6620G + HD 7670M Dual Graphics compare 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 compare 480 @ 0.4 GHz64 Bit @ 1800 MHz
Radeon HD 6480G + HD 7450M Dual Graphics compare 400 @ 0.59 GHz64 Bit @ - / 1800 MHz
ArchitectureTerascale 2
Pipelines560 - unified
Core Speed400 / 700 MHz
Memory Speed1800 MHz
Shared Memoryyes
APIDirectX 11, Shader 5.0
technology40 nm
Date of Announcement08.02.2012


- Range of benchmark values for this graphics card
- Average benchmark values for this graphics card
* Smaller numbers mean a higher performance

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

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Notebook reviews with AMD Radeon HD 6620G + HD 7450M Dual Graphics graphics card

HP Pavilion G6-1331sa: AMD A8-3520M, 15.60", 2.6 kg
  External Review » HP Pavilion G6-1331sa

HP Pavilion dv7-6b04er: AMD A8-3510MX, 17.30", 3.2 kg
  External Review » HP Pavilion dv7-6b04er

HP Pavilion g6-1331ea: AMD A8-3520M, 15.60", 2.6 kg
  External Review » HP Pavilion g6-1331ea

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Playable games for each graphics card and their average FPS results.

Class 1

Class 2

Radeon PRO W6600M *

Class 3

UHD Graphics 32EUs
UHD Graphics 750

Class 4

Class 5

* Approximate position of the graphics adapter

> Expert Reviews and News on Laptops, Smartphones and Tech Innovations > Benchmarks / Tech > Comparison of Laptop Graphics Cards > AMD Radeon HD 6620G + HD 7450M Dual Graphics
Klaus Hinum (Update: 2017-09- 5)