Radeon HD 6970M X2 vs 660M
Contents
Primary details
GPU architecture, market segment, value for money and other general parameters compared.
| Place in the ranking | 565 | not rated |
| Place by popularity | 97 | not in top-100 |
| Power efficiency | 14.78 | no data |
| Architecture | RDNA 2.0 (2020−2025) | TeraScale 2 (2009−2015) |
| GPU code name | Rembrandt+ | Blackcomb |
| Market segment | Laptop | Laptop |
| Release date | 3 January 2023 (2 years ago) | 4 January 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 | 384 | 960 ×2 |
| Core clock speed | 1500 MHz | 680 MHz |
| Boost clock speed | 1900 MHz | no data |
| Number of transistors | 13,100 million | 1,700 million |
| Manufacturing process technology | 6 nm | 40 nm |
| Power consumption (TDP) | 40 Watt | 150 Watt |
| Texture fill rate | 45.60 | 32.64 ×2 |
| Floating-point processing power | 1.459 TFLOPS | 1.306 TFLOPS ×2 |
| ROPs | 16 | 32 ×2 |
| TMUs | 24 | 48 ×2 |
| Ray Tracing Cores | 6 | no data |
| L0 Cache | 96 KB | no data |
| L1 Cache | 128 KB | 96 KB |
| L2 Cache | 2 MB | 512 KB |
| L3 Cache | 8 MB | 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).
| Interface | PCIe 4.0 x8 | MXM-B (3.0) |
| Supplementary power connectors | None | 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 ×2 |
| Memory bus width | System Shared | 256 Bit ×2 |
| Memory clock speed | System Shared | 900 MHz |
| Memory bandwidth | no data | 115.2 GB/s ×2 |
| 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 | Portable Device Dependent | Portable Device Dependent |
API and SDK support
List of supported 3D and general-purpose computing APIs, including their specific versions.
| DirectX | 12 Ultimate (12_2) | 11.2 (11_0) |
| Shader Model | 6.7 | 5.0 |
| OpenGL | 4.6 | 4.4 |
| OpenCL | 2.0 | 1.2 |
| Vulkan | 1.3 | N/A |
Pros & cons summary
| Recency | 3 January 2023 | 4 January 2011 |
| Chip lithography | 6 nm | 40 nm |
| Power consumption (TDP) | 40 Watt | 150 Watt |
Radeon 660M has an age advantage of 11 years, a 566.7% more advanced lithography process, and 275% lower power consumption.
We couldn't decide between Radeon 660M and Radeon HD 6970M X2. We've got no test results to judge.
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