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AMD Radeon HD 7420G

The AMD Radeon HD 7420G or HD7420G is a processor graphics card in the Trinity APUs from AMD (A4-4300M). It is a low-range version with a reduced shader count / clock speed and will be featured in the A4 series. It should be based on the VLIW4 architecture of the Radeon HD 6900 series desktop graphics card and most likely 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 somewhat below the Llano-based HD 6620G or in range of slower versions of the HD Graphics 4000. Most modern games of 2013/2014 won't run fluently even in (very) low settings; however, older and less demanding games can be played smoothly.

The APU is still manufactured in 32nm and as most A4 series parts should be classified with a 35 Watt TDP, the HD 7420G is best suited for laptops of 13-14-inch an up.

ManufacturerAMD
Radeon HD 7000G Series
Radeon HD 7660G (compare) 384 @ 497 - 686 (Boost) MHz
Radeon HD 7620G (compare) 384 @ 360 - 497 (Boost) MHz
Radeon HD 7640G (compare) 256 @ 497 - 686 (Boost) MHz
Radeon HD 7600G (compare) 384 @ 320 - 424 (Boost) MHz
Radeon HD 7500G (compare) 256 @ 327 - 424 (Boost) MHz
Radeon HD 7520G (compare) 192 @ 497 - 686 (Boost) MHz
Radeon HD 7420G 128 @ 480 - 655 (Boost) MHz
Radeon HD 7400G (compare) 192 @ 327 - 423 (Boost) MHz
CodenameTrinity
ArchitectureTerascale 3
Pipelines128 - unified
Core Speed480 - 655 (Boost) MHz
Shared Memoryyes
DirectXDirectX 11, Shader 5.0
technology32 nm
Notebook Sizemedium sized
Date of Announcement01.06.2012
CPUGPU Base SpeedGPU Boost / Turbo
AMD A4-4300M2 x 2500 MHz, 35 W480 MHz655 MHz

Benchmarks

3DMark 11 - Performance 1280x720
min: 0     avg: 250.5     median: 250.5 (1%)     max: 501 points
3DMark Vantage
P Result 1280x1024 +
P GPU no PhysX 1280x1024 +
3DMark 06 Standard 1280x1024 +
Cinebench R10 Shading 32Bit +
Cinebench R11.5 OpenGL 64Bit +
Cinebench R15
OpenGL 64Bit +
Ref. Match 64Bit +
- 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 detailled information on the benchmark results, click on the fps number.

Dirt 4

Dirt 4

2017
low 1280x720
15.5  fps    + Compare
» The benchmarks indicate that the game is not playable in the tested settings.
low 1366x768
26.1  fps    + Compare
med. 1366x768
18  fps    + Compare
» The benchmarks indicate that the game is not playable in the tested settings.
low 1024x768
23.3  fps    + Compare
med. 1366x768
18.3  fps    + Compare
» The benchmarks indicate that the game is not playable in the tested settings.
low 1024x768
38.6  fps    + Compare
med. 1366x768
14.6  fps    + Compare
» With all tested laptops playable in detail settings low.
GRID 2

GRID 2

2013
low 1024x768
28.9  fps    + Compare
med. 1366x768
17.2  fps    + Compare
» The benchmarks indicate that the game is not playable in the tested settings.
low 1024x768
91.5  fps    + Compare
med. 1366x768
28.2  fps    + Compare
high 1366x768
14.9  fps    + Compare
» With all tested laptops playable in detail settings low.
low 1024x768
28.7  fps    + Compare
med. 1366x768
14.9  fps    + Compare
» The benchmarks indicate that the game is not playable in the tested settings.