AMD Radeon HD 6450 vs NVIDIA GeForce 6800 XT
Graphics Processor
| GPU model | Caicos | NV40 |
|---|---|---|
| GPU variant | Caicos PRO | — |
| Architecture | TeraScale 2 | Curie |
| Foundry | TSMC | TSMC |
| Manufacturing process | 40 nm | 130 nm |
| Number of transistors | 370 million | 222 million |
| Die size | 67 mm² | 287 mm² |
Graphics Card
| Release date | Apr 7th, 2011 | Sep 30th, 2005 |
|---|---|---|
| Generation | Northern Islands | GeForce 6 AGP |
| Production | End-of-life | End-of-life |
| Launch price | 55 USD | — |
| Interface | PCIe 2.0 x16 | AGP 8x |
| Reviews | 14 in our database | 115 in our database |
| Predecessor | Evergreen | GeForce FX |
| Successor | Southern Islands | GeForce 7 AGP |
Clocks
| GPU clock | 625 MHz | 300 MHz |
|---|---|---|
| Memory clock | 800 MHz 3.2 Gbps effective | 350 MHz 700 Mbps effective |
Memory Configuration
| Memory size | 512 MB | 256 MB |
|---|---|---|
| Memory type | GDDR5 | DDR |
| Memory bus width | 64 bit | 256 bit |
| Bandwidth | 25.60 GB/s | 22.40 GB/s |
Render Configuration
| Shading units | 160 | — |
|---|---|---|
| TMUs | 8 | 8 |
| ROPs | 4 | 8 |
| Compute units | 2 | — |
| Cache L1 | 8 KB (per CU) | — |
| Cache L2 | 128 KB | — |
| Pixel shaders | — | 8 |
| Vertex shaders | — | 4 |
Performance
| Pixel rate | 2.500 GPixel/s | 2.400 GPixel/s |
|---|---|---|
| Texture rate | 5.000 GTexel/s | 2.400 GTexel/s |
| FP32 (float) performance | 200.0 GFLOPS | — |
| Vertex rate | — | 300.0 MVertices/s |
Dimensions & Outputs
| Slot width | Single-slot | Single-slot |
|---|---|---|
| Length | 168 mm 6.6 inches | — |
| TDP | 18 W | unknown |
| Suggested PSU | 200 W | 200 W |
| Outputs | 1x DVI1x HDMI1x VGA | 1x DVI1x VGA1x S-Video |
| Power connectors | None | 1x Molex |
| Board number | C264 | P212 |
API Support & Features
| DirectX | 11.2 (11_0) | 9.0c (9_3) |
|---|---|---|
| OpenGL | 4.4 | 2.1 |
| OpenCL | 1.2 | — |
| Vulkan | — | — |
| Shader model | 5.0 | 3.0 |
