Product Compare
AMD Radeon Instinct MI300X vs NVIDIA B300 SXM6 AC
| GPU | GPU | |
|---|---|---|
| Graphics Card | ||
| Release Date | Dec 2023 | Sep 2025 |
| Generation | Radeon Instinct | Server Blackwell |
| Type | Professional | Desktop |
| Bus Interface | PCIe 5.0 x16 | PCIe 6.0 x16 |
| Clock Speeds | ||
| Base Clock | 1000 MHz | 1665 MHz |
| Boost Clock | 2100 MHz | 2032 MHz |
| Memory Clock | 1300 MHz | 2000 MHz |
| Memory | ||
| Memory Size | 192GB | 288GB |
| Memory Type | HBM3 | HBM3e |
| Memory Bus | 8192bit | 8192bit |
| Bandwidth | 5.32TB/s | 8.19TB/s |
| Render Config | ||
| Compute Units | 304 | |
| Shading Units | 19456 | 18944 |
| TMUs | 1216 | 592 |
| ROPs | 0 | 24 |
| Tensor Cores | 1216 | 592 |
| L1 Cache | 16 KB (per CU) | 256 KB (per SM) |
| L2 Cache | 16 MB | 126 MB |
| L3 Cache | 256 MB | |
| SM Count | 148 | |
| Theoretical Performance | ||
| Pixel Rate | 0 MPixel/s | 48.77 GPixel/s |
| Texture Rate | 2553.6 GTexel/s | 1202.9 GTexel/s |
| FP16 (half) | 81.72 TFLOPS | 76.99 TFLOPS |
| FP32 (float) | 81.72 TFLOPS | 76.99 TFLOPS |
| FP64 (double) | 40.86 TFLOPS | 1202.9 GFLOPS |
| Graphics Processor | ||
| GPU Name | Aqua Vanjaram | GB110 |
| Architecture | CDNA 3.0 | Blackwell Ultra |
| Foundry | TSMC | TSMC |
| Process Size | 5 nm | 5 nm |
| Transistors | 153 billion | 208 billion |
| Die Size | 1017 mm² | 1628 mm² |
| Board Design | ||
| TDP | 750W | 1100W |
| Suggested PSU | 1150 W | 1500 W |
| Outputs | No outputs | No outputs |
| Power Connectors | None | |
| Graphics Features | ||
| DirectX | N/A | N/A |
| OpenGL | N/A | N/A |
| OpenCL | 3.0 | 3.0 |
| Vulkan | N/A | N/A |
| Shader Model | N/A | N/A |
| CUDA | 10.3 | |