GeForce 8400 GS PCI Rev. 2 vs 7900 GS
Contents
Primary details
GPU architecture, market segment, value for money and other general parameters compared.
| Place in the ranking | 1239 | not rated |
| Place by popularity | not in top-100 | not in top-100 |
| Cost-effectiveness evaluation | 0.01 | no data |
| Power efficiency | 0.93 | no data |
| Architecture | Curie (2003−2013) | Tesla 2.0 (2007−2013) |
| GPU code name | G71 | GT218 |
| Market segment | Desktop | Desktop |
| Release date | 1 May 2006 (19 years ago) | 17 April 2007 (18 years ago) |
| Launch price (MSRP) | $259 | no data |
Cost-effectiveness evaluation
The higher the performance-to-price ratio, the better. We use the manufacturer's recommended prices for comparison.
Performance to price scatter graph
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 | no data | 16 |
| Core clock speed | 450 MHz | 520 MHz |
| Number of transistors | 278 million | 260 million |
| Manufacturing process technology | 90 nm | 40 nm |
| Power consumption (TDP) | 49 Watt | 40 Watt |
| Texture fill rate | 9.000 | 4.160 |
| Floating-point processing power | no data | 0.03936 TFLOPS |
| ROPs | 16 | 4 |
| TMUs | 20 | 8 |
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 1.0 x16 | PCI |
| Length | 198 mm | no data |
| Width | 1-slot | 1-slot |
| Supplementary power connectors | 1x 6-pin | 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 | GDDR3 | DDR3 |
| Maximum RAM amount | 256 MB | 512 MB |
| Memory bus width | 256 Bit | 64 Bit |
| Memory clock speed | 660 MHz | 500 MHz |
| Memory bandwidth | 42.24 GB/s | 8 GB/s |
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 | 2x DVI, 1x S-Video | 1x DVI, 1x HDMI, 1x VGA |
| HDMI | - | + |
API and SDK compatibility
List of supported 3D and general-purpose computing APIs, including their specific versions.
| DirectX | 9.0c (9_3) | 11.1 (10_1) |
| Shader Model | 3.0 | 4.1 |
| OpenGL | 2.1 | 3.3 |
| OpenCL | N/A | 1.1 |
| Vulkan | N/A | N/A |
| CUDA | - | 1.2 |
Pros & cons summary
| Recency | 1 May 2006 | 17 April 2007 |
| Maximum RAM amount | 256 MB | 512 MB |
| Chip lithography | 90 nm | 40 nm |
| Power consumption (TDP) | 49 Watt | 40 Watt |
8400 GS PCI Rev. 2 has an age advantage of 11 months, a 100% higher maximum VRAM amount, a 125% more advanced lithography process, and 22.5% lower power consumption.
We couldn't decide between GeForce 7900 GS and GeForce 8400 GS PCI Rev. 2. We've got no test results to judge.
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