AMD Radeon HD 7640G + HD 7600M Dual Graphics 3D Mark Okay, technical Info, known issues and bugs


  3D Bench Mark OK

3D.Mark.Okay for Graphic-Card: AMD-Radeon-HD-7640G-HD-7600M-Dual-Graphics

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 1 45.20   Medium  1366x768 0../img/icoGK/amd-ico.png  AMD A8-4500M APU with Radeon(tm) HD Graphics 2x86.1.7601

AMD Radeon HD 7640G + HD 7600M Dual Graphics - Technical Information.


The AMD Radeon HD 7640G is an integrated graphics unit integrated into certain Trinity-generation AMD APU processors, while the AMD Radeon HD 7600M is a dedicated mobile graphics card. When these two work together it is called “Dual Graphics”. Here is the technical information about both graphics units:

AMD Radeon HD 7640G:

- Generation:
The Radeon HD 7640G belongs to AMD's Radeon HD 7000 series and is part of the Trinity generation of APUs (Accelerated Processing Units).
- Graphics Architecture:
It is based on AMD's VLIW4 architecture.
- Shader cores:
The number of shader cores is usually 384.
- Clock frequency:
The clock frequency varies depending on the model of APU, but is typically in the range of 497 MHz to 686 MHz.
- Memory Type and Bandwidth:
The HD 7640G shares memory with system memory and supports DDR3 memory.
- DirectX Support:
It supports DirectX 11 and older versions.
- Performance:
The HD 7640G delivers solid performance for basic tasks such as multimedia playback, web browsing, and some games with low graphics requirements.

AMD Radeon HD 7600M:

- Generation:
The Radeon HD 7600M is also part of AMD's Radeon HD 7000 series and is a dedicated mobile graphics card.
- Graphics Architecture:
It is based on AMD's GCN (Graphics Core Next) architecture.
- Shader cores:
The number of shader cores can vary depending on the model, but typically it is between 384 and 512.
- Clock frequency:
The clock frequency varies depending on the model and can be between 500 MHz and 800 MHz.
- Memory:
The HD 7600M has its own VRAM (Video Random Access Memory) and supports GDDR5 memory.
- DirectX Support:
It supports DirectX 11 and older versions.
- Performance:
The HD 7600M offers higher performance compared to the integrated graphics solution and is better suited for gaming and other graphics-intensive applications.

Dual Graphics:

When the Radeon HD 7640G and Radeon HD 7600M work together in Dual Graphics mode, performance is improved by combining both graphics units to accelerate graphics processing. This can result in better performance in games and other graphics-intensive applications. However, the support and effectiveness of Dual Graphics mode depends on various factors such as driver version, games and system configuration.


AMD Radeon HD 7640G + HD 7600M Dual Graphics, known issues and bugs.


The dual graphics configuration with the AMD Radeon HD 7640G and HD 7600M has encountered some issues and bugs that may impact performance and stability. Here are some known issues:

1. Driver incompatibility and instability:
A common issue with dual graphics systems is driver incompatibility or instability. Different driver versions for the integrated and dedicated graphics cards can cause conflicts that can lead to crashes, reduced performance, or other malfunctions.

2. Performance fluctuations and stuttering:
Some users have reported performance fluctuations or stuttering when using Dual Graphics. This may be due to insufficient driver support or synchronization issues between the two graphics units.

3. Game and Application Compatibility Issues:
Certain games or applications may not work optimally with the dual graphics configuration. This may result in graphical errors, crashes, or other issues.

4. Overheating and Thermal Issues:
Using two graphics units simultaneously can result in increased heat generation, especially in compact or poorly ventilated systems. This can lead to overheating problems, which can affect performance or cause damage.

5. Energy Consumption and Battery Life:
Dual Graphics may increase energy consumption, especially when used on a laptop or other portable device. This can lead to shortened battery life and affect the mobility of the device.

To minimize these issues, it is important to install the latest driver updates from AMD, monitor system temperature, adjust graphics settings, and disable the dual graphics feature if necessary.
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