ATI R580+ vs Radeon HD 6990M Crossfire
Primary details
GPU architecture, market segment, value for money and other general parameters compared.
| Place in performance ranking | 439 | not rated |
| Place by popularity | not in top-100 | not in top-100 |
| Architecture | Terascale 2 (2009−2015) | Ultra-Threaded SE (2005−2007) |
| GPU code name | Blackcomb XTX | R580+ |
| Market segment | Laptop | Desktop |
| Release date | 12 July 2011 (13 years ago) | no data |
Detailed specifications
General performance parameters such as number of shaders, GPU core base clock and boost clock speeds, manufacturing process, texturing and calculation speed. These parameters indirectly speak of performance, but for precise assessment you have to consider their benchmark and gaming test results. Note that power consumption of some graphics cards can well exceed their nominal TDP, especially when overclocked.
| Pipelines / CUDA cores | 2240 | no data |
| Core clock speed | 715 MHz | no data |
| Number of transistors | 2x1700 Million | 384 million |
| Manufacturing process technology | 40 nm | 90 nm |
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 | 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 | GDDR5 | no data |
| Maximum RAM amount | 2x2 GB | no data |
| Memory bus width | 256 Bit | no data |
| Memory clock speed | 900 MHz | no data |
| Shared memory | - | no data |
API compatibility
List of supported graphics and general-purpose computing APIs, including their specific versions.
| DirectX | 11 | 9.0c (9_3) |
| Shader Model | no data | 3.0 |
| OpenGL | no data | 2.1 (full) 3.0 (partial) |
| OpenCL | no data | N/A |
| Vulkan | - | N/A |
Pros & cons summary
| Chip lithography | 40 nm | 90 nm |
HD 6990M Crossfire has a 125% more advanced lithography process.
We couldn't decide between Radeon HD 6990M Crossfire and R580+. We've got no test results to judge.
Be aware that Radeon HD 6990M Crossfire is a notebook card while R580+ is a desktop 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
We selected several comparisons of graphics cards with performance close to those reviewed, providing you with more options to consider.
