Radeon RX 6400 vs GeForce 8800 GTS 640
Contents
Primary details
GPU architecture, market segment, value for money and other general parameters compared.
| Place in the ranking | not rated | 330 |
| Place by popularity | not in top-100 | not in top-100 |
| Cost-effectiveness evaluation | no data | 43.48 |
| Power efficiency | no data | 26.92 |
| Architecture | Tesla (2006−2010) | RDNA 2.0 (2020−2025) |
| GPU code name | G80 | Navi 24 |
| Market segment | Desktop | Desktop |
| Release date | 8 November 2006 (19 years ago) | 19 January 2022 (4 years ago) |
| Launch price (MSRP) | $449 | $159 |
Cost-effectiveness evaluation
The higher the ratio, the better. We use the manufacturer's recommended prices.
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 | 96 | 768 |
| Core clock speed | 513 MHz | 1923 MHz |
| Boost clock speed | no data | 2321 MHz |
| Number of transistors | 681 million | 5,400 million |
| Manufacturing process technology | 90 nm | 6 nm |
| Power consumption (TDP) | 143 Watt | 53 Watt |
| Texture fill rate | 24.62 | 111.4 |
| Floating-point processing power | 0.2281 TFLOPS | 3.565 TFLOPS |
| ROPs | 20 | 32 |
| TMUs | 24 | 48 |
| Ray Tracing Cores | no data | 12 |
| L0 Cache | no data | 192 KB |
| L1 Cache | no data | 256 KB |
| L2 Cache | 80 KB | 1024 KB |
| L3 Cache | no data | 16 MB |
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 | PCIe 4.0 x4 |
| Length | 267 mm | no data |
| Width | 2-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 | GDDR6 |
| Maximum RAM amount | 640 MB | 4 GB |
| Memory bus width | 320 Bit | 64 Bit |
| Memory clock speed | 792 MHz | 2000 MHz |
| Memory bandwidth | 63.36 GB/s | 128.0 GB/s |
| Resizable BAR | - | + |
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 HDMI 2.1, 1x DisplayPort 1.4a |
| HDMI | - | + |
API and SDK support
List of supported 3D and general-purpose computing APIs, including their specific versions.
| DirectX | 11.1 (10_0) | 12 Ultimate (12_2) |
| Shader Model | 4.0 | 6.7 |
| OpenGL | 3.3 | 4.6 |
| OpenCL | 1.1 | 2.2 |
| Vulkan | N/A | 1.3 |
| CUDA | + | - |
Pros & cons summary
| Recency | 8 November 2006 | 19 January 2022 |
| Maximum RAM amount | 640 MB | 4 GB |
| Chip lithography | 90 nm | 6 nm |
| Power consumption (TDP) | 143 Watt | 53 Watt |
RX 6400 has an age advantage of 15 years, a 540% higher maximum VRAM amount, a 1400% more advanced lithography process, and 170% lower power consumption.
We couldn't decide between GeForce 8800 GTS 640 and Radeon RX 6400. We've got no test results to judge.
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