Radeon HD 6970M Mac Edition vs HD 7640G
Contents
Primary details
GPU architecture, market segment, value for money and other general parameters compared.
| Place in the ranking | 1126 | not rated |
| Place by popularity | not in top-100 | not in top-100 |
| Power efficiency | 2.37 | no data |
| Architecture | TeraScale 3 (2010−2013) | TeraScale 2 (2009−2015) |
| GPU code name | Devastator Lite | Blackcomb |
| Market segment | Laptop | Laptop |
| Release date | 15 May 2012 (13 years ago) | 25 August 2011 (14 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 | 256 | 960 |
| Core clock speed | 496 MHz | 680 MHz |
| Boost clock speed | 685 MHz | no data |
| Number of transistors | 1,303 million | 1,700 million |
| Manufacturing process technology | 32 nm | 40 nm |
| Power consumption (TDP) | 35 Watt | 75 Watt |
| Texture fill rate | 10.96 | 32.64 |
| Floating-point processing power | 0.3507 TFLOPS | 1.306 TFLOPS |
| ROPs | 8 | 32 |
| TMUs | 16 | 48 |
| L1 Cache | no data | 192 KB |
| L2 Cache | no data | 512 KB |
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 | medium sized | no data |
| Interface | IGP | MXM-B (3.0) |
| Supplementary power connectors | no data | None |
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 | GDDR5 |
| Maximum RAM amount | System Shared | 2 GB |
| Memory bus width | System Shared | 256 Bit |
| Memory clock speed | System Shared | 900 MHz |
| Memory bandwidth | no data | 115.2 GB/s |
| Shared memory | + | - |
Connectivity and outputs
This section shows the types and number of video connectors on each GPU. The data applies specifically to desktop reference models (for example, NVIDIA’s Founders Edition). OEM partners often modify both the number and types of ports. On notebook GPUs, video‐output options are determined by the laptop’s design rather than the graphics chip itself.
| Display Connectors | No outputs | No outputs |
API and SDK support
List of supported 3D and general-purpose computing APIs, including their specific versions.
| DirectX | 11.2 (11_0) | 11.2 (11_0) |
| Shader Model | 5.0 | 5.0 |
| OpenGL | 4.4 | 4.4 |
| OpenCL | 1.2 | 1.2 |
| Vulkan | N/A | N/A |
Pros & cons summary
| Recency | 15 May 2012 | 25 August 2011 |
| Chip lithography | 32 nm | 40 nm |
| Power consumption (TDP) | 35 Watt | 75 Watt |
HD 7640G has an age advantage of 8 months, a 25% more advanced lithography process, and 114.3% lower power consumption.
We couldn't decide between Radeon HD 7640G and Radeon HD 6970M Mac Edition. We've got no test results to judge.
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