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 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
Pipelines560 - unified
Core Speed *400 / 700 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.


No benchmarks found for this graphics card.

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

#0 Table tx_nbc2_benchcache_gpu alreday found +0.03s ... 0.03s

#1 About to fill cache table +0s ... 0.03s

#2 Filled cache +9.603s ... 9.633s

#3 Before gaming benchmark output +0.206s ... 9.838s

#4 return log +0.003s ... 9.841s

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

HP Pavilion dv7-6b04er: AMD A-Series A8-3510MX, 17.3", 3.2 kg
  External Review » HP Pavilion dv7-6b04er

HP Pavilion g6-1331ea: AMD A-Series A8-3520M, 15.6", 2.6 kg
  External Review » HP Pavilion g6-1331ea

» Comparison of GPUs
Detailled list of all laptop GPUs with a short description. Classified and sorted by performance.

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Class 1
GeForce GTX 590
GeForce GTX 580
Radeon HD 6970
GeForce GTX 570
GeForce GTX 560 Ti
Radeon HD 5850
Radeon HD 7770
Radeon HD 7770
GeForce GTX 460 768MB
Radeon HD 6790
Radeon HD 5770
GeForce GTX 550 Ti
Class 2
GeForce GTS 450
Radeon HD 4850
Class 3
Radeon HD 5670
GeForce GT 240
Radeon R6 M255DX
GeForce GT 430
Radeon HD 5570
GeForce GT 220
Mali-T760 MP8
Adreno 430
Radeon HD 6450 GDDR5
Class 4
Mali-T760 MP6
HD Graphics (Cherry Trail) *
Class 5
Radeon HD 4350
GeForce G 107M *
PowerVR GX6250
Chrome9HD *
Mali-T628 MP4
Adreno 405 *
Class 6
Mali-T760 MP2
unknown *

* Approximate position of the graphics adapter

> Notebook / Laptop Reviews and News > Benchmarks / Tech > Comparison of Laptop Graphics Cards > AMD Radeon HD 6620G + HD 7450M Dual Graphics
Author: Klaus Hinum (Update: 2013-01-17)