Radeon HD 6970M X2 vs GeForce 840M
Contents
Primary details
GPU architecture, market segment, value for money and other general parameters compared.
| Place in the ranking | 842 | not rated |
| Place by popularity | not in top-100 | not in top-100 |
| Power efficiency | 6.05 | no data |
| Architecture | Maxwell (2014−2017) | TeraScale 2 (2009−2015) |
| GPU code name | GM108 | Blackcomb |
| Market segment | Laptop | Laptop |
| Release date | 12 March 2014 (11 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 | 1029 MHz | 680 MHz |
| Boost clock speed | 1124 MHz | no data |
| Number of transistors | no data | 1,700 million |
| Manufacturing process technology | 28 nm | 40 nm |
| Power consumption (TDP) | 33 Watt | 150 Watt |
| Texture fill rate | 17.98 | 32.64 ×2 |
| Floating-point processing power | 0.8632 TFLOPS | 1.306 TFLOPS ×2 |
| ROPs | 8 | 32 ×2 |
| TMUs | 16 | 48 ×2 |
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 |
| Bus support | PCI Express 2.0, PCI Express 3.0 | no data |
| Interface | PCIe 3.0 x8 | 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 | DDR3 | GDDR5 |
| Maximum RAM amount | 4 GB | 2 GB ×2 |
| Memory bus width | 64 Bit | 256 Bit ×2 |
| Memory clock speed | 1001 MHz | 900 MHz |
| Memory bandwidth | 16.02 GB/s | 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 | No outputs | Portable Device Dependent |
Supported technologies
Supported technological solutions. This information will prove useful if you need some particular technology for your purposes.
| GPU Boost | 2.0 | no data |
| Optimus | + | - |
| GameWorks | + | - |
API and SDK compatibility
List of supported 3D and general-purpose computing APIs, including their specific versions.
| DirectX | 12 (11_0) | 11.2 (11_0) |
| Shader Model | 5.1 | 5.0 |
| OpenGL | 4.5 | 4.4 |
| OpenCL | 1.2 | 1.2 |
| Vulkan | 1.1.126 | N/A |
| CUDA | + | - |
Pros & cons summary
| Recency | 12 March 2014 | 4 January 2011 |
| Maximum RAM amount | 4 GB | 2 GB |
| Chip lithography | 28 nm | 40 nm |
| Power consumption (TDP) | 33 Watt | 150 Watt |
GeForce 840M has an age advantage of 3 years, a 100% higher maximum VRAM amount, a 42.9% more advanced lithography process, and 354.5% lower power consumption.
We couldn't decide between GeForce 840M and Radeon HD 6970M X2. We've got no test results to judge.
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