Radeon HD 6640G2 vs HD 6520G
Primary details
GPU architecture, market segment, value for money and other general parameters compared.
| Place in the ranking | 1146 | not rated |
| Place by popularity | not in top-100 | not in top-100 |
| Power efficiency | 1.52 | no data |
| Architecture | TeraScale 2 (2009−2015) | Terascale 2 (2009−2015) |
| GPU code name | Sumo | no data |
| Market segment | Desktop | Laptop |
| Release date | 7 December 2011 (12 years ago) | 14 June 2011 (13 years ago) |
Detailed specifications
General parameters such as number of shaders, GPU core base clock and boost clock speeds, manufacturing process, texturing and calculation speed. Note that power consumption of some graphics cards can well exceed their nominal TDP, especially when overclocked.
| Pipelines / CUDA cores | 320 | 560 |
| Core clock speed | 400 MHz | no data |
| Number of transistors | 1,178 million | no data |
| Manufacturing process technology | 32 nm | 40 nm |
| Power consumption (TDP) | 35 Watt | no data |
| Texture fill rate | 6.400 | no data |
| Floating-point processing power | 0.256 TFLOPS | no data |
| ROPs | 8 | no data |
| TMUs | 16 | no data |
Form factor & compatibility
Information on compatibility with other computer components. Useful when choosing a future computer configuration or upgrading an existing one. For desktop graphics cards it's interface and bus (motherboard compatibility), additional power connectors (power supply compatibility).
| Laptop size | no data | medium sized |
| Interface | IGP | no data |
| Width | IGP | no data |
VRAM capacity and type
Parameters of VRAM installed: its type, size, bus, clock and resulting bandwidth. Integrated GPUs have no dedicated video RAM and use a shared part of system RAM.
| Memory type | System Shared | no data |
| Maximum RAM amount | System Shared | no data |
| Memory bus width | System Shared | no data |
| Memory clock speed | System Shared | no data |
| Shared memory | + | - |
Connectivity and outputs
Types and number of video connectors present on the reviewed GPUs. As a rule, data in this section is precise only for desktop reference ones (so-called Founders Edition for NVIDIA chips). OEM manufacturers may change the number and type of output ports, while for notebook cards availability of certain video outputs ports depends on the laptop model rather than on the card itself.
| Display Connectors | No outputs | no data |
API compatibility
List of supported 3D and general-purpose computing APIs, including their specific versions.
| DirectX | 11.2 (11_0) | 11 |
| Shader Model | 5.0 | no data |
| OpenGL | 4.4 | no data |
| OpenCL | 1.2 | no data |
| Vulkan | N/A | - |
Pros & cons summary
| Recency | 7 December 2011 | 14 June 2011 |
| Chip lithography | 32 nm | 40 nm |
HD 6520G has an age advantage of 5 months, and a 25% more advanced lithography process.
We couldn't decide between Radeon HD 6520G and Radeon HD 6640G2. We've got no test results to judge.
Be aware that Radeon HD 6520G is a desktop card while Radeon HD 6640G2 is a notebook one.
Should you still have questions concerning choice between the reviewed GPUs, ask them in Comments section, and we shall answer.
Comparisons with similar GPUs
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