Radeon HD 6645G2 vs GeForce GTX 675M SLI
Primary details
GPU architecture, market segment, value for money and other general parameters compared.
| Place in the ranking | 484 | not rated |
| Place by popularity | not in top-100 | not in top-100 |
| Power efficiency | 3.05 | no data |
| Architecture | Fermi (2010−2014) | Terascale 2 (2009−2015) |
| GPU code name | N12E-GTX2 | no data |
| Market segment | Laptop | Laptop |
| Release date | 6 January 2011 (13 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 | 768 | 560 |
| Core clock speed | 620 MHz | no data |
| Manufacturing process technology | 40 nm | 40 nm |
| Power consumption (TDP) | 2x 100 Watt | 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 | large | medium sized |
| SLI options | + | - |
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 | GDDR5 | no data |
| Memory bus width | 256 Bit | no data |
| Memory clock speed | 3000 MHz | no data |
| Shared memory | - | - |
Supported technologies
Supported technological solutions. This information will prove useful if you need some particular technology for your purposes.
| Optimus | + | - |
API compatibility
List of supported 3D and general-purpose computing APIs, including their specific versions.
| DirectX | 11 | 11 |
| CUDA | + | - |
Pros & cons summary
| Recency | 6 January 2011 | 14 June 2011 |
HD 6645G2 has an age advantage of 5 months.
We couldn't decide between GeForce GTX 675M SLI and Radeon HD 6645G2. We've got no test results to judge.
Should you still have questions concerning choice between the reviewed GPUs, ask them in Comments section, and we shall answer.
Comparisons with similar GPUs
We selected several comparisons of graphics cards with performance close to those reviewed, providing you with more options to consider.
