NVIDIA GeForce 6800 XT vs NVIDIA GeForce 8400 GS
Graphics Processor
| GPU model | NV40 | G86 |
|---|---|---|
| Architecture | Curie | Tesla |
| Foundry | TSMC | TSMC |
| Manufacturing process | 130 nm | 80 nm |
| Number of transistors | 222 million | 210 million |
| Die size | 287 mm² | 127 mm² |
| GPU variant | — | G86-213-A2 |
Graphics Card
| Release date | Sep 30th, 2005 | Apr 17th, 2007 |
|---|---|---|
| Generation | GeForce 6 AGP | GeForce 8 |
| Production | End-of-life | End-of-life |
| Interface | AGP 8x | PCIe 1.0 x16 |
| Reviews | 115 in our database | 10 in our database |
| Predecessor | GeForce FX | GeForce 7 PCIe |
| Successor | GeForce 7 AGP | GeForce 9 |
Clocks
| GPU clock | 300 MHz | 459 MHz |
|---|---|---|
| Memory clock | 350 MHz 700 Mbps effective | 400 MHz 800 Mbps effective |
| Shader clock | — | 918 MHz |
Memory Configuration
| Memory size | 256 MB | 256 MB |
|---|---|---|
| Memory type | DDR | DDR2 |
| Memory bus width | 256 bit | 64 bit |
| Bandwidth | 22.40 GB/s | 6.400 GB/s |
Render Configuration
| Pixel shaders | 8 | — |
|---|---|---|
| Vertex shaders | 4 | — |
| TMUs | 8 | 8 |
| ROPs | 8 | 4 |
| Shading units | — | 16 |
| SM count | — | 2 |
| Cache L2 | — | 16 KB |
Performance
| Pixel rate | 2.400 GPixel/s | 1.836 GPixel/s |
|---|---|---|
| Vertex rate | 300.0 MVertices/s | — |
| Texture rate | 2.400 GTexel/s | 3.672 GTexel/s |
| FP32 (float) performance | — | 29.38 GFLOPS |
Dimensions & Outputs
| Slot width | Single-slot | Single-slot |
|---|---|---|
| TDP | unknown | 40 W |
| Suggested PSU | 200 W | 200 W |
| Outputs | 1x DVI1x VGA1x S-Video | 1x DVI1x VGA1x S-Video |
| Power connectors | 1x Molex | None |
| Board number | P212 | P403, P413 |
| Length | — | 170 mm 6.7 inches |
API Support & Features
| DirectX | 9.0c (9_3) | 11.1 (10_0) |
|---|---|---|
| OpenGL | 2.1 | 3.3 |
| OpenCL | — | 1.1 |
| Vulkan | — | — |
| Shader model | 3.0 | 4.0 |
| CUDA | — | 1.1 |
