Product Compare
NVIDIA Tesla K40st vs NVIDIA RTX A4000
| GPU | GPU | |
|---|---|---|
| Graphics Card | ||
| Release Date | Nov 2013 | Apr 2021 |
| Generation | Tesla | Quadro Ampere |
| Type | Professional | Professional |
| Bus Interface | PCIe 3.0 x16 | PCIe 4.0 x16 |
| Clock Speeds | ||
| Memory Clock | 1502 MHz | 1750 MHz |
| Base Clock | 735 MHz | |
| Boost Clock | 1560 MHz | |
| Memory | ||
| Memory Size | 12GB | 16GB |
| Memory Type | GDDR5 | GDDR6 |
| Memory Bus | 384bit | 256bit |
| Bandwidth | 288.4GB/s | 448.0GB/s |
| Render Config | ||
| Shading Units | 2880 | 6144 |
| TMUs | 240 | 192 |
| ROPs | 48 | 96 |
| L1 Cache | 16 KB (per SMX) | 128 KB (per SM) |
| L2 Cache | 1536 KB | 4 MB |
| SM Count | 48 | |
| Tensor Cores | 192 | |
| RT Cores | 48 | |
| Theoretical Performance | ||
| Pixel Rate | 34.50 GPixel/s | 149.8 GPixel/s |
| Texture Rate | 138.0 GTexel/s | 299.5 GTexel/s |
| FP32 (float) | 3.312 TFLOPS | 19.17 TFLOPS |
| FP64 (double) | 1104 GFLOPS | 299.5 GFLOPS |
| FP16 (half) | 19.17 TFLOPS | |
| Graphics Processor | ||
| GPU Name | GK110B | GA104 |
| Architecture | Kepler | Ampere |
| Foundry | TSMC | Samsung |
| Process Size | 28 nm | 8 nm |
| Transistors | 7.08 billion | 17.4 billion |
| Die Size | 561 mm² | 392 mm² |
| GPU Variant | GA104-875-A1 | |
| Board Design | ||
| TDP | 245W | 140W |
| Suggested PSU | 550 W | 300 W |
| Outputs | No outputs | 4x DisplayPort 1.4a |
| Power Connectors | 1x 6-pin | |
| Graphics Features | ||
| DirectX | 12 (11_1) | 12 Ultimate (12_2) |
| OpenGL | 4.6 | 4.6 |
| OpenCL | 3.0 | 3.0 |
| Vulkan | 1.1 | 1.3 |
| CUDA | 3.5 | 8.6 |
| Shader Model | 5.1 | 6.7 |