Radeon HD 6990M Rebrand vs R6 M340DX
Contents
Primary details
GPU architecture, market segment, value for money and other general parameters compared.
| Place in the ranking | 857 | not rated |
| Place by popularity | not in top-100 | not in top-100 |
| Architecture | GCN 1.0 (2012−2020) | TeraScale 2 (2009−2015) |
| GPU code name | Jet | Broadway |
| Market segment | Laptop | Laptop |
| Release date | 12 December 2015 (10 years ago) | 12 July 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 | 800 |
| Core clock speed | 955 MHz | 800 MHz |
| Boost clock speed | 1030 MHz | no data |
| Number of transistors | 690 million | 1,040 million |
| Manufacturing process technology | 28 nm | 40 nm |
| Power consumption (TDP) | no data | 100 Watt |
| Texture fill rate | 24.72 | 32.00 |
| Floating-point processing power | 0.791 TFLOPS | 1.28 TFLOPS |
| ROPs | 8 | 16 |
| TMUs | 24 | 40 |
| L1 Cache | 96 KB | 112 KB |
| L2 Cache | 256 KB | 256 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) |
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 | 1 GB |
| Memory bus width | System Shared | 128 Bit |
| Memory clock speed | System Shared | 1100 MHz |
| Memory bandwidth | no data | 70.4 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 | 12 (11_1) | 11.2 (11_0) |
| Shader Model | 5.1 | 5.0 |
| OpenGL | 4.6 | 4.4 |
| OpenCL | 1.2 | 1.2 |
| Vulkan | 1.2.131 | N/A |
Other comparisons
We selected several comparisons of graphics cards with performance close to those reviewed, providing you with more options to consider.
