Product Compare
NVIDIA GeForce RTX 3080 Ti 20 GB vs AMD Radeon RX 6800 XT
| GPU | GPU | |
|---|---|---|
| Graphics Card | ||
| Release Date | Jun 2025 | Oct 2020 |
| Generation | Navi IV | Navi II |
| Type | Desktop | Desktop |
| Bus Interface | PCIe 5.0 x16 | PCIe 4.0 x16 |
| Clock Speeds | ||
| Base Clock | 1700 MHz | 1825 MHz |
| Boost Clock | 3130 MHz | 2250 MHz |
| Memory Clock | 2518 MHz | 2000 MHz |
| Memory | ||
| Memory Size | 8GB | 16GB |
| Memory Type | GDDR6 | GDDR6 |
| Memory Bus | 128bit | 256bit |
| Bandwidth | 322.3GB/s | 512.0GB/s |
| Render Config | ||
| SM Count | 80 | |
| Compute Units | 32 | 72 |
| Shading Units | 2048 | 4608 |
| TMUs | 128 | 288 |
| ROPs | 64 | 128 |
| Tensor Cores | 320 | |
| RT Cores | 32 | 72 |
| L1 Cache | 128 KB (per SM) | 128 KB per Array |
| L2 Cache | 4 MB | 4 MB |
| L3 Cache | 32 MB | 128 MB |
| Theoretical Performance | ||
| Pixel Rate | 200.3 GPixel/s | 288.0 GPixel/s |
| Texture Rate | 400.6 GTexel/s | 648.0 GTexel/s |
| FP16 (half) | 51.28 TFLOPS | 41.47 TFLOPS |
| FP32 (float) | 25.64 TFLOPS | 20.74 TFLOPS |
| FP64 (double) | 801.3 GFLOPS | 1296 GFLOPS |
| Graphics Processor | ||
| GPU Name | Navi 44 | Navi 21 |
| GPU Variant | Navi 44 XT(215-176400102) | Navi 21 XT(215-121000177) |
| Architecture | RDNA 4.0 | RDNA 2.0 |
| Foundry | TSMC | TSMC |
| Process Size | 4 nm | 7 nm |
| Transistors | 29.7 billion | 26.8 billion |
| Die Size | 199 mm² | 520 mm² |
| Board Design | ||
| TDP | 150W | 300W |
| Suggested PSU | 450 W | 700 W |
| Outputs | 1x HDMI 2.1b2x DisplayPort 2.1a | 1x HDMI 2.12x DisplayPort 1.4a1x USB Type-C |
| Power Connectors | 1x 8-pin | 2x 8-pin |
| Graphics Features | ||
| DirectX | 12 Ultimate (12_2) | 12 Ultimate (12_2) |
| OpenGL | 4.6 | 4.6 |
| OpenCL | 2.2 | 2.1 |
| Vulkan | 1.3 | 1.3 |
| CUDA | 8.6 | |
| Shader Model | 6.8 | 6.5 |