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.
Radeon HD 7000G Series
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| Codename | Trinity | ||||||||||||||||||||||||
| Architecture | Terascale 3 | ||||||||||||||||||||||||
| iGPU | Integrated Graphics | ||||||||||||||||||||||||
| Pipelines | 128 - unified | ||||||||||||||||||||||||
| Core Speed | 480 - 655 (Boost) MHz | ||||||||||||||||||||||||
| Shared Memory | yes | ||||||||||||||||||||||||
| API | DirectX 11, Shader 5.0, OpenGL 4.2 | ||||||||||||||||||||||||
| Man. Technology | 32 nm | ||||||||||||||||||||||||
| Notebook Size | medium sized | ||||||||||||||||||||||||
| Date of Announcement | 01.06.2012 | ||||||||||||||||||||||||
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- Average benchmark valuesThe 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.
For more games that might be playable and a list of all games and graphics cards visit our Gaming List
HP ProBook 455 G1: AMD A4-4300M, 15.60", 2.4 kg
External Review » HP ProBook 455 G1
HP ProBook 4545s-C5C71EA: AMD A4-4300M, 15.60", 2.4 kg
External Review » HP ProBook 4545s-C5C71EA
HP ProBook 4545s-H5K12EA: AMD A4-4300M, 15.60", 2.6 kg
External Review » HP ProBook 4545s-H5K12EA
HP Pavilion g6-2248ca: AMD A4-4300M, 15.60", 2.5 kg
External Review » HP Pavilion g6-2248ca
HP Pavilion g6-2226nr: AMD A4-4300M, 15.60", 2.5 kg
External Review » HP Pavilion g6-2226nr
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