Product Compare
AMD Radeon Instinct MI455X vs AMD Radeon RX 550 Mobile
| GPU | GPU | |
|---|---|---|
| Graphics Card | ||
| Release Date | Jul 2026 | Jul 2017 |
| Generation | Radeon Instinct | Mobility Radeon |
| Type | Desktop | Mobile |
| Bus Interface | PCIe 6.0 x16 | PCIe 3.0 x8 |
| Clock Speeds | ||
| Base Clock | 1000 MHz | 1100 MHz |
| Boost Clock | 2400 MHz | 1287 MHz |
| Memory Clock | 1900 MHz | 1500 MHz |
| Memory | ||
| Memory Size | 432GB | 2GB |
| Memory Type | HBM4 | GDDR5 |
| Memory Bus | 24576bit | 128bit |
| Bandwidth | 23.3TB/s | 96.00GB/s |
| Render Config | ||
| Compute Units | 256 | 10 |
| Shading Units | 32768 | 640 |
| TMUs | 1024 | 40 |
| ROPs | 0 | 16 |
| L1 Cache | 32 KB (per CU) | 16 KB (per CU) |
| L2 Cache | 192 MB | 512 KB |
| Theoretical Performance | ||
| Pixel Rate | 0 MPixel/s | 20.59 GPixel/s |
| Texture Rate | 2457.6 GTexel/s | 51.48 GTexel/s |
| FP16 (half) | 157.3 TFLOPS | 1.647 TFLOPS |
| FP32 (float) | 157.3 TFLOPS | 1.647 TFLOPS |
| FP64 (double) | 2.458 TFLOPS | 103.0 GFLOPS |
| Graphics Processor | ||
| GPU Name | MI450 256CU | Lexa |
| Architecture | CDNA 5.0 | GCN 4.0 |
| Foundry | TSMC | GlobalFoundries |
| Process Size | 2 nm | 14 nm |
| Transistors | 320 billion | 2.2 billion |
| Die Size | Unknown | 103 mm² |
| GPU Variant | Lexa PRO(215-0904018) | |
| Board Design | ||
| TDP | 2300W | 50W |
| Suggested PSU | 2700 W | |
| Outputs | No outputs | No outputs |
| Power Connectors | None | None |
| Graphics Features | ||
| DirectX | N/A | 12 (12_0) |
| OpenGL | N/A | 4.6 |
| OpenCL | 3.0 | 2.1 |
| Vulkan | N/A | 1.2 |
| Shader Model | N/A | 6.4 |