Product Compare
AMD Radeon RX 9070 XT vs AMD Radeon Instinct MI455X
| GPU | GPU | |
|---|---|---|
| Graphics Card | ||
| Release Date | Mar 2025 | Jul 2026 |
| Generation | Navi IV | Radeon Instinct |
| Type | Desktop | Desktop |
| Bus Interface | PCIe 5.0 x16 | PCIe 6.0 x16 |
| Clock Speeds | ||
| Base Clock | 1660 MHz | 1000 MHz |
| Boost Clock | 2970 MHz | 2400 MHz |
| Memory Clock | 2518 MHz | 1900 MHz |
| Memory | ||
| Memory Size | 16GB | 432GB |
| Memory Type | GDDR6 | HBM4 |
| Memory Bus | 256bit | 24576bit |
| Bandwidth | 644.6GB/s | 23.3TB/s |
| Render Config | ||
| Compute Units | 64 | 256 |
| Shading Units | 4096 | 32768 |
| TMUs | 256 | 1024 |
| ROPs | 128 | 0 |
| Tensor Cores | 128 | |
| RT Cores | 64 | |
| L1 Cache | 128 | 32 KB (per CU) |
| L2 Cache | 8 MB | 192 MB |
| L3 Cache | 64 MB | |
| Theoretical Performance | ||
| Pixel Rate | 380.2 GPixel/s | 0 MPixel/s |
| Texture Rate | 760.3 GTexel/s | 2457.6 GTexel/s |
| FP16 (half) | 97.32 TFLOPS | 157.3 TFLOPS |
| FP32 (float) | 48.66 TFLOPS | 157.3 TFLOPS |
| FP64 (double) | 1.521 TFLOPS | 2.458 TFLOPS |
| Graphics Processor | ||
| GPU Name | Navi 48 | MI450 256CU |
| GPU Variant | Navi 48 XTX | |
| Architecture | RDNA 4.0 | CDNA 5.0 |
| Foundry | TSMC | TSMC |
| Process Size | 4 nm | 2 nm |
| Transistors | 53.9 billion | 320 billion |
| Die Size | 357 mm² | Unknown |
| Board Design | ||
| TDP | 304W | 2300W |
| Suggested PSU | 700 W | 2700 W |
| Outputs | 1x HDMI 2.1b3x DisplayPort 2.1a | No outputs |
| Power Connectors | 2x 8-pin | None |
| Graphics Features | ||
| DirectX | 12 Ultimate (12_2) | N/A |
| OpenGL | 4.6 | N/A |
| OpenCL | 2.2 | 3.0 |
| Vulkan | 1.4 | N/A |
| Shader Model | 6.8 | N/A |