AMD Radeon HD 7640G vs AMD Radeon HD 7400G

AMD Radeon HD 7640G

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The AMD Radeon HD 7640G or HD7640G is a processor graphics card in the Trinity APUs from AMD. It is the second fastest version and is featured only in the A8 series. It is based on the VLIW4 architecture of the Radeon HD 6900 series desktop graphics card and doesn't offer a dedicated graphics memory.

Trinity got its name due to the fact that it consists out of three different architecture parts. The CPU cores are based on the Piledriver architecture (Bulldozer successor), the GPU cores on Northern Islands GPU cores (HD 6900 desktop series) and the video processing engine and multi-display connectivity from the new Southern Islands GPU architecture (HD 7900 series).

The integrated UVD3 video decoder (Avivo HD) allows the full decoding of Multi-View Codec (MVC), MPEG-4 Part 2 (DivX, xVid), MPEG-4 AVC/H.264 and Adobe Flash HD videos.

The performance is in the mid range of HD 6000M series cards similar or slower than the AMD Radeon HD 6630M (see for benchmarks). Therefore, the graphics card is a bit faster than the Intel HD Graphics 4000 in Ivy Bridge CPUs.

The APU is still manufactured in 32nm and as most A8 series parts should be classified with a 35 Watt TDP, the HD 7640G is best suited for laptops of 13-14-inch an up.

AMD Radeon HD 7400G

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The AMD Radeon HD 7400G or HD7400G is a processor graphics card in the Trinity APUs from AMD (A4-4355M). It is a low-range version with a reduced shader count / clock speed and will be featured in the A4 series (ULV). It should be based on the VLIW4 architecture of the Radeon HD 6900 series desktop graphics card and wont offer a dedicated graphics memory.

Trinity got its name due to the fact that it consists out of three different architecture parts. The CPU cores are based on the Piledriver architecture (Bulldozer successor), the GPU cores on Northern Islands GPU cores (HD 6900 desktop series) and the video processing engine and multi-display connectivity from the new Southern Islands GPU architecture (HD 7900 series).

The integrated UVD3 video decoder (Avivo HD) allows the full decoding of Multi-View Codec (MVC), MPEG-4 Part 2 (DivX, xVid), MPEG-4 AVC/H.264 and Adobe Flash HD videos.

The performance is in the range of the Llano-based HD 6480G and the Intel HD Graphics (Haswell). Older and less demanding games will run fluently in (very) low settings and resolutions.

The APU is still manufactured in 32nm and, as all A4 ULV parts, should be classified with a 17 Watt TDP. Therefore, the HD 7400G is best suited for small laptops of 11 inch an up.

AMD Radeon HD 7640GAMD Radeon HD 7400G
ManufacturerAMDAMD
Radeon HD 7000G Series
Radeon HD 7660G compare 384 @ 497 - 686 MHz
Radeon HD 7620G compare 384 @ 360 - 497 MHz
Radeon HD 7640G 256 @ 497 - 686 MHz
Radeon HD 7600G compare 384 @ 320 - 424 MHz
Radeon HD 7500G compare 256 @ 327 - 424 MHz
Radeon HD 7520G compare 192 @ 497 - 686 MHz
Radeon HD 7420G compare 128 @ 480 - 655 MHz
Radeon HD 7400G 192 @ 327 - 423 MHz
Radeon HD 7660G compare 384 @ 497 - 686 MHz
Radeon HD 7620G compare 384 @ 360 - 497 MHz
Radeon HD 7640G 256 @ 497 - 686 MHz
Radeon HD 7600G compare 384 @ 320 - 424 MHz
Radeon HD 7500G compare 256 @ 327 - 424 MHz
Radeon HD 7520G compare 192 @ 497 - 686 MHz
Radeon HD 7420G compare 128 @ 480 - 655 MHz
Radeon HD 7400G 192 @ 327 - 423 MHz
CodenameTrinityTrinity
ArchitectureTerascale 3Terascale 3
Pipelines256 - unified192 - unified
Core Speed497 - 686 (Boost) MHz327 - 423 (Boost) MHz
Shared Memoryyesyes
DirectXDirectX 11, Shader 5.0DirectX 11, Shader 5.0
technology32 nm32 nm
Notebook Sizemedium sizedmedium sized
Date of Announcement15.05.2012 01.09.2012
CPU in Radeon HD 7640GGPU Base SpeedGPU Boost / Turbo
AMD A8-4500M4 x 1900 MHz, 35 W496 MHz685 MHz
AMD A8-4557M4 x 1900 MHz, 35 W497 MHz655 MHz
min. - max.496 - 497 MHz655 - 685 MHz
CPU in Radeon HD 7400GGPU Base SpeedGPU Boost / Turbo
AMD A4-4355M2 x 1900 MHz, 17 W327 MHz424 MHz

Benchmarks

3DMark - Cloud Gate Standard Score 1280x720
1586 Points (4%)
3DMark - Cloud Gate Standard Graphics 1280x720
2424 Points (3%)
3DMark - Fire Strike Score 1920x1080
245 Points (2%)
3DMark - Fire Strike Graphics 1920x1080
327 Points (2%)
3DMark - Ice Storm Standard Graphics 1280x720
29730 Points (4%)
3DMark 11 - Performance 1280x720
min: 680     avg: 704     median: 704 (4%)     max: 728 points
454 points (3%)
3DMark 11 - Performance GPU 1280x720
min: 651     avg: 656     median: 655.5 (3%)     max: 660 points
415 points (2%)
3DMark Vantage
P Result 1280x1024 + AMD Radeon HD 7640G
P GPU no PhysX 1280x1024 + AMD Radeon HD 7640G
3DMark 2001SE - Standard 1024x768
18117 Points (19%)
3DMark 03 - Standard 1024x768
min: 12496     avg: 12523     median: 12523 (8%)     max: 12550 Points
8371 Points (6%)
3DMark 05 - Standard 1024x768
min: 7655     avg: 7781     median: 7781 (21%)     max: 7907 Points
4515 Points (12%)
3DMark 06 Standard 1280x1024 + AMD Radeon HD 7640G
Standard 1280x1024 + AMD Radeon HD 7400G
Unigine Heaven 2.1 - high, Tesselation (normal), DirectX11 1280x1024
5.1 fps (3%)
Windows 7 Experience Index - Gaming graphics
6.1 points (77%)
Windows 7 Experience Index - Graphics
min: 4.9     avg: 5.3     median: 5.3 (66%)     max: 5.6 points
Cinebench R10 Shading 32Bit + AMD Radeon HD 7640G
Shading 32Bit + AMD Radeon HD 7400G
Cinebench R11.5 OpenGL 64Bit + AMD Radeon HD 7640G
OpenGL 64Bit + AMD Radeon HD 7400G
ComputeMark v2.1 - Normal, Score 1024x600
316 Points (3%)

Average Benchmarks AMD Radeon HD 7640G → 100% n=7

Average Benchmarks AMD Radeon HD 7400G → 69% n=7

- 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.

low 1280x720
Radeon HD 7400G:
23  fps
med. 1366x768
Radeon HD 7400G:
11  fps
high 1366x768
Radeon HD 7400G:
9  fps
SimCity

SimCity

2013
low 1024x768
Radeon HD 7400G:
24  fps
med. 1366x768
Radeon HD 7400G:
9  fps
high 1366x768
Radeon HD 7400G:
6  fps
low 1024x768
Radeon HD 7400G:
27  fps
med. 1366x768
Radeon HD 7400G:
14  fps
high 1366x768
Radeon HD 7400G:
8.6  fps
Crysis 3

Crysis 3

2013
low 1024x768
Radeon HD 7400G:
11  fps
med. 1366x768
Radeon HD 7400G:
7  fps
low 1024x768
Radeon HD 7400G:
43  fps
med. 1366x768
Radeon HD 7400G:
17  fps
high 1366x768
Radeon HD 7400G:
13  fps
low 1024x768
Radeon HD 7400G:
9  fps
med. 1366x768
Radeon HD 7400G:
8  fps
low 1024x768
Radeon HD 7400G:
15  fps
med. 1366x768
Radeon HD 7400G:
9  fps
low 1024x768
Radeon HD 7400G:
20  fps
med. 1366x768
Radeon HD 7400G:
16  fps
high 1366x768
Radeon HD 7400G:
14  fps
Fifa 13

Fifa 13

2012
low 1024x768
Radeon HD 7400G:
41  fps
med. 1366x768
Radeon HD 7400G:
30  fps
high 1366x768
Radeon HD 7400G:
22  fps
low 1024x768
Radeon HD 7400G:
21  fps
med. 1366x768
Radeon HD 7400G:
12  fps
low 1024x768
Radeon HD 7400G:
19  fps
med. 1366x768
Radeon HD 7400G:
14  fps
low 1024x768
100%
Radeon HD 7640G:
30.2  fps
low 1024x768
100%
Radeon HD 7640G:
42.7  fps
80%
Radeon HD 7400G:
34  fps
med. 1366x768
Radeon HD 7400G:
23  fps
high 1366x768
Radeon HD 7400G:
19  fps
ultra 1920x1080
100%
Radeon HD 7640G:
9.5  fps
low 1280x720
Radeon HD 7400G:
18  fps
high 1366x768
Radeon HD 7400G:
13  fps
Anno 2070

Anno 2070

2011
low 1024x768
100%
Radeon HD 7640G:
44.3  fps
74%
Radeon HD 7400G:
33  fps
med. 1366x768
Radeon HD 7400G:
13  fps
low 1280x720
100%
Radeon HD 7640G:
28.4  fps
67%
Radeon HD 7400G:
19  fps
med. 1366x768
100%
Radeon HD 7640G:
16.7  fps
78%
Radeon HD 7400G:
13  fps
high 1366x768
100%
Radeon HD 7640G:
11.6  fps
Fifa 12

Fifa 12

2011
low 800x600
100%
Radeon HD 7640G:
124.1  fps
med. 1024x768
100%
Radeon HD 7640G:
76  fps
F1 2011

F1 2011

2011
low 800x600
100%
Radeon HD 7640G:
45  fps
med. 1024x768
100%
Radeon HD 7640G:
29  fps
low 1024x768
100%
Radeon HD 7640G:
45.5 47.5 ~ 47 fps
72%
Radeon HD 7400G:
34  fps
high 1366x768
100%
Radeon HD 7640G:
21.1  fps
66%
Radeon HD 7400G:
14  fps
Dirt 3

Dirt 3

2011
low 800x600
100%
Radeon HD 7640G:
65.3  fps
med. 1024x768
100%
Radeon HD 7640G:
33.5  fps
Mafia 2

Mafia 2

2010
low 800x600
Radeon HD 7400G:
14.6  fps
med. 1024x768
Radeon HD 7400G:
12  fps
low 1024x768
100%
Radeon HD 7640G:
109.1  fps
88%
Radeon HD 7400G:
96  fps
med. 1360x768
100%
Radeon HD 7640G:
23  fps
87%
Radeon HD 7400G:
20  fps
high 1360x768
100%
Radeon HD 7640G:
15  fps
87%
Radeon HD 7400G:
13  fps
low 1024x768
Radeon HD 7400G:
25  fps
med. 1366x768
Radeon HD 7400G:
20  fps
high 1366x768
Radeon HD 7400G:
13  fps

Average Gaming AMD Radeon HD 7640G → 100%

Average Gaming AMD Radeon HD 7400G → 78%

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

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Redaktion, 2017-09- 8 (Update: 2017-09-11)