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AMD Radeon HD 6640G2 vs AMD Radeon HD 6645G2 vs AMD Radeon HD 6740G2

AMD Radeon HD 6640G2

► remove from comparison AMD Radeon HD 6640G2

The AMD Radeon HD 6640G2 is the combination of a integrated AMD Radeon HD 6620G APU processor graphics card and a dedicated entry level AMD Radeon HD 6470M 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 Radeon HD 6640G2 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 6645G2

► remove from comparison AMD Radeon HD 6645G2

The AMD Radeon HD 6645G2 is the combination of a integrated AMD Radeon HD 6620G APU processor graphics card and a dedicated entry level AMD Radeon HD 6490M 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 Radeon HD 6645G2 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 6740G2

► remove from comparison AMD Radeon HD 6740G2

The AMD Radeon HD 6740G2 is the combination of a integrated AMD Radeon HD 6620G APU processor graphics card and a dedicated entry level AMD Radeon HD 6650M 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 Radeon HD 6740G2 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 6640G2AMD Radeon HD 6645G2AMD Radeon HD 6740G2
Radeon HD 6000G2 Series
Radeon HD 6775G2 880
Radeon HD 6755G2 880
Radeon HD 6760G2 880
Radeon HD 6740G2 880
Radeon HD 6720G2 880
Radeon HD 6690G2 880
Radeon HD 6680G2 800
Radeon HD 6645G2 560
Radeon HD 6640G2 560
Radeon HD 6545G2 480
Radeon HD 6540G2 480
Radeon HD 6515G2 400
Radeon HD 6510G2 400
Radeon HD 6775G2 880
Radeon HD 6755G2 880
Radeon HD 6760G2 880
Radeon HD 6740G2 880
Radeon HD 6720G2 880
Radeon HD 6690G2 880
Radeon HD 6680G2 800
Radeon HD 6645G2 560
Radeon HD 6640G2 560
Radeon HD 6545G2 480
Radeon HD 6540G2 480
Radeon HD 6515G2 400
Radeon HD 6510G2 400
Radeon HD 6775G2 880
Radeon HD 6755G2 880
Radeon HD 6760G2 880
Radeon HD 6740G2 880
Radeon HD 6720G2 880
Radeon HD 6690G2 880
Radeon HD 6680G2 800
Radeon HD 6645G2 560
Radeon HD 6640G2 560
Radeon HD 6545G2 480
Radeon HD 6540G2 480
Radeon HD 6515G2 400
Radeon HD 6510G2 400
ArchitectureTerascale 2Terascale 2Terascale 2
Pipelines560 - unified560 - unified880 - unified
Shared Memorynonono
APIDirectX 11, Shader 5.0DirectX 11, Shader 5.0DirectX 11, Shader 5.0
technology40 nm40 nm40 nm
Notebook Sizemedium sizedmedium sizedmedium sized
Date of Announcement14.06.2011 14.06.2011 14.06.2011

Benchmarks

3DMark 11 - 3DM11 Performance Score
min: 1419     avg: 1602     median: 1624 (3%)     max: 1739 Points
3DMark 11 - 3DM11 Performance GPU
min: 1472     avg: 1577     median: 1597 (2%)     max: 1661 Points
3DMark Vantage
3DM Vant. Perf. total + AMD Radeon HD 6740G2
3DMark Vantage - 3DM Vant. Perf. total
min: 4937     avg: 5088     median: 5088 (1%)     max: 5239 Points
3DM Vant. Perf. GPU no PhysX + AMD Radeon HD 6740G2
3DMark Vantage - 3DM Vant. Perf. GPU no PhysX
min: 4790     avg: 4956     median: 4956 (4%)     max: 5122 Points
3DMark 03 - 3DMark 03 - Standard
min: 14350     avg: 17227     median: 17227 (9%)     max: 20104 Points
3DMark 05 - 3DMark 05 - Standard
10949 Points (15%)
3DMark 06 3DMark 06 - Standard 1280x1024 + AMD Radeon HD 6740G2
3DMark 06
min: 6412     avg: 6754     median: 6753.5 (10%)     max: 7095 Points
Unigine Heaven 2.1 - Heaven 2.1 high
min: 17.5     avg: 17.7     median: 17.7 (3%)     max: 17.8 fps
Windows 7 Experience Index - Win7 Gaming graphics
min: 6.1     avg: 6.2     median: 6.2 (78%)     max: 6.3 Points
Windows 7 Experience Index - Win7 Graphics
min: 5.2     avg: 5.3     median: 5.3 (67%)     max: 5.3 Points
Cinebench R10 Cinebench R10 Shading (32bit) + AMD Radeon HD 6740G2
Cinebench R10 - Cinebench R10 Shading (32bit)
min: 3628     avg: 3792     median: 3792 (3%)     max: 3956 Points
Cinebench R11.5 Cinebench R11.5 OpenGL 64 Bit + AMD Radeon HD 6740G2
Cinebench R11.5 - Cinebench R11.5 OpenGL 64 Bit
min: 14.9     avg: 22.4     median: 23.3 (8%)     max: 27.9 fps

Average Benchmarks AMD Radeon HD 6740G2 → NAN% n=

- Range of benchmark values for this graphics card
- Average benchmark values for this graphics card
* Smaller numbers mean a higher performance
1 This benchmark is not used for the average calculation

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.

Star Wars: The Old Republic

Star Wars: The Old Republic

2011
low 1024x768
Radeon HD 6740G2:
33.4  fps
high 1366x768
Radeon HD 6740G2:
22.1  fps
Anno 2070

Anno 2070

2011
low 1024x768
Radeon HD 6740G2:
94.2 fps  fps
med. 1366x768
Radeon HD 6740G2:
39.4 fps  fps
high 1366x768
Radeon HD 6740G2:
26.6 fps  fps
low 1280x720
Radeon HD 6740G2:
26.4 fps  fps
med. 1366x768
Radeon HD 6740G2:
24.9 fps  fps
high 1366x768
Radeon HD 6740G2:
19.9 fps  fps
low 1024x768
Radeon HD 6740G2:
37.2 fps  fps
med. 1366x768
Radeon HD 6740G2:
28.9 fps  fps
high 1366x768
Radeon HD 6740G2:
24.4 fps  fps
Fifa 12

Fifa 12

2011
low 800x600
Radeon HD 6740G2:
135.9 fps  fps
med. 1024x768
Radeon HD 6740G2:
88.7 fps  fps
high 1360x768
Radeon HD 6740G2:
69.5 fps  fps
F1 2011

F1 2011

2011
low 800x600
Radeon HD 6740G2:
47 fps  fps
med. 1024x768
Radeon HD 6740G2:
31 fps  fps
high 1366x768
Radeon HD 6740G2:
26 fps  fps
low 1024x768
Radeon HD 6740G2:
76  fps
high 1366x768
Radeon HD 6740G2:
28.6  fps
Dirt 3

Dirt 3

2011
low 800x600
Radeon HD 6740G2:
68  fps
med. 1024x768
Radeon HD 6740G2:
40.7  fps
high 1360x768
Radeon HD 6740G2:
27.7  fps
Crysis 2

Crysis 2

2011
low 800x600
Radeon HD 6740G2:
51 fps  fps
med. 1024x768
Radeon HD 6740G2:
34.5 fps  fps
high 1366x768
Radeon HD 6740G2:
25.8 fps  fps
Total War: Shogun 2

Total War: Shogun 2

2011
low 1024x768
Radeon HD 6740G2:
87.6  fps
med. 1280x720
Radeon HD 6740G2:
27.6  fps
med. 1024x768
Radeon HD 6740G2:
38.3  fps
high 1360x768
Radeon HD 6740G2:
26.8  fps
low 1024x768
Radeon HD 6740G2:
101.2  fps
med. 1360x768
Radeon HD 6740G2:
41  fps
high 1360x768
Radeon HD 6740G2:
29.5  fps
low 800x600
Radeon HD 6740G2:
52.4  fps
med. 1360x768
Radeon HD 6740G2:
33.4  fps
low 1024x768
Radeon HD 6740G2:
68.8  fps
med. 1366x768
Radeon HD 6740G2:
61  fps
high 1366x768
Radeon HD 6740G2:
48.8  fps
Risen

Risen

2009
low 800x600
Radeon HD 6740G2:
49  fps
med. 1024x768
Radeon HD 6740G2:
33.1  fps
high 1366x768
Radeon HD 6740G2:
25  fps

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

v1.17
log 10. 22:25:42

#0 checking url part for id 2658 +0s ... 0s

#1 checking url part for id 2645 +0s ... 0s

#2 checking url part for id 2632 +0s ... 0s

#3 not redirecting to Ajax server +0s ... 0s

#4 did not recreate cache, as it is less than 5 days old! Created at Mon, 08 Aug 2022 17:26:29 +0200 +0.001s ... 0.001s

#5 linkCache_getLink using $NBC_LINKCACHE +0.067s ... 0.068s

#6 linkCache_getLink using $NBC_LINKCACHE +0s ... 0.068s

#7 linkCache_getLink using $NBC_LINKCACHE +0s ... 0.068s

#8 linkCache_getLink using $NBC_LINKCACHE +0s ... 0.068s

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#11 linkCache_getLink using $NBC_LINKCACHE +0s ... 0.068s

#12 linkCache_getLink using $NBC_LINKCACHE +0s ... 0.068s

#13 linkCache_getLink using $NBC_LINKCACHE +0s ... 0.068s

#14 linkCache_getLink using $NBC_LINKCACHE +0s ... 0.068s

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#18 linkCache_getLink using $NBC_LINKCACHE +0s ... 0.07s

#19 linkCache_getLink using $NBC_LINKCACHE +0s ... 0.07s

#20 linkCache_getLink using $NBC_LINKCACHE +0s ... 0.07s

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#22 linkCache_getLink using $NBC_LINKCACHE +0s ... 0.07s

#23 linkCache_getLink using $NBC_LINKCACHE +0s ... 0.07s

#24 linkCache_getLink using $NBC_LINKCACHE +0s ... 0.07s

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#26 linkCache_getLink using $NBC_LINKCACHE +0s ... 0.07s

#27 linkCache_getLink using $NBC_LINKCACHE +0s ... 0.07s

#28 composed specs +0s ... 0.07s

#29 did output specs +0s ... 0.07s

#30 start showIntegratedCPUs +0s ... 0.07s

#31 getting avg benchmarks for device 2658 +0.038s ... 0.108s

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#33 got single benchmarks 2658 +0.005s ... 0.113s

#34 getting avg benchmarks for device 2645 +0s ... 0.113s

#35 got single benchmarks 2645 +0s ... 0.113s

#36 getting avg benchmarks for device 2632 +0s ... 0.114s

#37 linkCache_getLink using $NBC_LINKCACHE +0.001s ... 0.114s

#38 got single benchmarks 2632 +0.007s ... 0.121s

#39 got avg benchmarks for devices +0s ... 0.121s

#40 linkCache_getLink no uid found +0s ... 0.121s

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#42 linkCache_getLink no uid found +0s ... 0.122s

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#44 linkCache_getLink using $NBC_LINKCACHE +0s ... 0.122s

#45 linkCache_getLink no uid found +0s ... 0.122s

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#47 linkCache_getLink using $NBC_LINKCACHE +0s ... 0.122s

#48 linkCache_getLink no uid found +0s ... 0.123s

#49 linkCache_getLink using $NBC_LINKCACHE +0s ... 0.123s

#50 linkCache_getLink no uid found +0s ... 0.123s

#51 linkCache_getLink using $NBC_LINKCACHE +0s ... 0.123s

#52 linkCache_getLink using $NBC_LINKCACHE +0s ... 0.123s

#53 linkCache_getLink no uid found +0s ... 0.124s

#54 linkCache_getLink using $NBC_LINKCACHE +0s ... 0.124s

#55 linkCache_getLink no uid found +0s ... 0.124s

#56 linkCache_getLink using $NBC_LINKCACHE +0s ... 0.124s

#57 linkCache_getLink using $NBC_LINKCACHE +0s ... 0.124s

#58 linkCache_getLink no uid found +0s ... 0.124s

#59 linkCache_getLink no uid found +0s ... 0.124s

#60 linkCache_getLink no uid found +0s ... 0.125s

#61 linkCache_getLink no uid found +0s ... 0.125s

#62 linkCache_getLink using $NBC_LINKCACHE +0s ... 0.125s

#63 linkCache_getLink no uid found +0s ... 0.125s

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#65 linkCache_getLink no uid found +0s ... 0.125s

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#67 linkCache_getLink using $NBC_LINKCACHE +0s ... 0.125s

#68 linkCache_getLink no uid found +0s ... 0.125s

#69 min, max, avg, median took s +0s ... 0.126s

#70 before gaming benchmark output +0s ... 0.126s

#71 Got 40 rows for game benchmarks. +0.006s ... 0.132s

#72 composed SQL query for gamebenchmarks +0s ... 0.132s

#73 linkCache_getLink using $NBC_LINKCACHE +0s ... 0.132s

#74 linkCache_getLink using $NBC_LINKCACHE +0s ... 0.132s

#75 linkCache_getLink using $NBC_LINKCACHE +0s ... 0.132s

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#77 linkCache_getLink using $NBC_LINKCACHE +0s ... 0.132s

#78 linkCache_getLink using $NBC_LINKCACHE +0s ... 0.132s

#79 linkCache_getLink using $NBC_LINKCACHE +0s ... 0.132s

#80 linkCache_getLink using $NBC_LINKCACHE +0s ... 0.132s

#81 linkCache_getLink using $NBC_LINKCACHE +0s ... 0.132s

#82 linkCache_getLink using $NBC_LINKCACHE +0s ... 0.132s

#83 linkCache_getLink using $NBC_LINKCACHE +0s ... 0.132s

#84 linkCache_getLink using $NBC_LINKCACHE +0s ... 0.132s

#85 linkCache_getLink using $NBC_LINKCACHE +0s ... 0.132s

#86 linkCache_getLink using $NBC_LINKCACHE +0s ... 0.132s

#87 linkCache_getLink using $NBC_LINKCACHE +0s ... 0.132s

#88 linkCache_getLink using $NBC_LINKCACHE +0s ... 0.132s

#89 linkCache_getLink using $NBC_LINKCACHE +0s ... 0.132s

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#92 linkCache_getLink using $NBC_LINKCACHE +0s ... 0.133s

#93 linkCache_getLink using $NBC_LINKCACHE +0s ... 0.133s

#94 got data and put it in $dataArray +0.002s ... 0.135s

#95 linkCache_getLink using $NBC_LINKCACHE +0.001s ... 0.136s

#96 linkCache_getLink using $NBC_LINKCACHE +0s ... 0.136s

#97 linkCache_getLink using $NBC_LINKCACHE +0.001s ... 0.137s

#98 linkCache_getLink using $NBC_LINKCACHE +0s ... 0.137s

#99 linkCache_getLink using $NBC_LINKCACHE +0s ... 0.137s

#100 linkCache_getLink using $NBC_LINKCACHE +0.001s ... 0.138s

#101 linkCache_getLink using $NBC_LINKCACHE +0s ... 0.138s

#102 linkCache_getLink using $NBC_LINKCACHE +0s ... 0.138s

#103 linkCache_getLink using $NBC_LINKCACHE +0.001s ... 0.139s

#104 linkCache_getLink using $NBC_LINKCACHE +0s ... 0.139s

#105 linkCache_getLink using $NBC_LINKCACHE +0s ... 0.139s

#106 linkCache_getLink using $NBC_LINKCACHE +0.001s ... 0.14s

#107 linkCache_getLink using $NBC_LINKCACHE +0s ... 0.14s

#108 linkCache_getLink using $NBC_LINKCACHE +0s ... 0.14s

#109 linkCache_getLink using $NBC_LINKCACHE +0.001s ... 0.141s

#110 linkCache_getLink using $NBC_LINKCACHE +0s ... 0.141s

#111 linkCache_getLink using $NBC_LINKCACHE +0s ... 0.141s

#112 linkCache_getLink no uid found +0.001s ... 0.142s

#113 linkCache_getLink no uid found +0s ... 0.142s

#114 linkCache_getLink no uid found +0.001s ... 0.142s

#115 linkCache_getLink no uid found +0s ... 0.142s

#116 linkCache_getLink no uid found +0s ... 0.142s

#117 linkCache_getLink using $NBC_LINKCACHE +0.001s ... 0.143s

#118 linkCache_getLink using $NBC_LINKCACHE +0s ... 0.143s

#119 linkCache_getLink using $NBC_LINKCACHE +0s ... 0.143s

#120 linkCache_getLink no uid found +0.001s ... 0.144s

#121 linkCache_getLink no uid found +0s ... 0.144s

#122 linkCache_getLink no uid found +0.001s ... 0.145s

#123 linkCache_getLink no uid found +0s ... 0.145s

#124 linkCache_getLink using $NBC_LINKCACHE +0.001s ... 0.146s

#125 linkCache_getLink using $NBC_LINKCACHE +0s ... 0.146s

#126 linkCache_getLink using $NBC_LINKCACHE +0s ... 0.146s

#127 linkCache_getLink using $NBC_LINKCACHE +0.001s ... 0.146s

#128 linkCache_getLink using $NBC_LINKCACHE +0s ... 0.146s

#129 linkCache_getLink no uid found +0.001s ... 0.147s

#130 linkCache_getLink no uid found +0s ... 0.147s

#131 linkCache_getLink no uid found +0s ... 0.147s

#132 linkCache_getLink no uid found +0.001s ... 0.148s

#133 linkCache_getLink no uid found +0s ... 0.148s

#134 linkCache_getLink no uid found +0s ... 0.148s

#135 benchmarks composed for output. +0s ... 0.148s

#136 calculated avg scores. +0s ... 0.148s

#137 return log +0.001s ... 0.148s

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> Notebook / Laptop Reviews and News > Benchmarks / Tech > Graphics Card Comparison - Head 2 Head
Redaktion, 2017-09- 8 (Update: 2017-09-11)