GeForce 7900 GX2 vs Radeon 840M
Contents
Primary details
GPU architecture, market segment, value for money and other general parameters compared.
| Place in the ranking | 538 | not rated |
| Place by popularity | not in top-100 | not in top-100 |
| Power efficiency | 45.85 | no data |
| Architecture | RDNA 3.5 (2025−2026) | Curie (2003−2013) |
| GPU code name | Krackan Point | G71 |
| Market segment | Laptop | Desktop |
| Release date | March 2025 (1 year ago) | 30 April 2006 (20 years ago) |
| Launch price (MSRP) | no data | $599 |
Detailed specifications
General parameters such as number of shaders, GPU core base clock and boost clock speeds, manufacturing process, texturing and calculation speed. Real power consumption of some graphics cards can well exceed their nominal TDP, especially if overclocked.
| Pipelines / CUDA cores | 256 | no data |
| Core clock speed | 400 MHz | 500 MHz |
| Boost clock speed | 2900 MHz | no data |
| Number of transistors | no data | 278 million |
| Manufacturing process technology | 4 nm | 90 nm |
| Power consumption (TDP) | 15 Watt | no data |
| Texture fill rate | 46.40 | 12.00 ×2 |
| ROPs | 8 | 16 ×2 |
| TMUs | 16 | 24 ×2 |
| Ray Tracing Cores | 4 | no data |
| L0 Cache | 64 KB | no data |
| L1 Cache | 64 KB | no data |
| L2 Cache | 1024 KB | 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 | medium sized | no data |
| Interface | PCIe 4.0 x8 | PCIe 1.0 x16 |
| Length | no data | 312 mm |
| Width | no data | 2-slot |
| Supplementary power connectors | None | 2x 6-pin |
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 | GDDR3 |
| Maximum RAM amount | System Shared | 512 MB ×2 |
| Memory bus width | System Shared | 256 Bit ×2 |
| Memory clock speed | System Shared | 600 MHz |
| Memory bandwidth | no data | 38.4 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 | 2x DVI, 1x S-Video |
API and SDK support
List of supported 3D and general-purpose computing APIs, including their specific versions.
| DirectX | 12 Ultimate (12_2) | 9.0c (9_3) |
| Shader Model | 6.8 | 3.0 |
| OpenGL | 4.6 | 2.1 |
| OpenCL | 2.1 | N/A |
| Vulkan | 1.4 | N/A |
Other comparisons
We selected several comparisons of graphics cards with performance close to those reviewed, providing you with more options to consider.
