AMD Radeon Instinct MI250X vs AMD Radeon R9 M295X Mac Edition
Graphics Processor
| GPU model | Aldebaran | Amethyst |
|---|---|---|
| GPU variant | Aldebaran XT | Amethyst XT |
| Architecture | CDNA 2.0 | GCN 3.0 |
| Foundry | TSMC | TSMC |
| Manufacturing process | 6 nm | 28 nm |
| Number of transistors | 58,200 million | 5,000 million |
| Die size | unknown | 366 mm² |
Graphics Card
| Release date | Nov 8th, 2021 | — |
|---|---|---|
| Generation | Radeon Instinct | — |
| Production | unknown | — |
| Interface | PCIe 4.0 x16 | — |
Clocks
| Base clock | 1000 MHz | — |
|---|---|---|
| Boost clock | 1700 MHz | — |
| Memory clock | 1600 MHz 3.2 Gbps effective | 1362 MHz 5.4 Gbps effective |
| GPU clock | — | 850 MHz |
Memory Configuration
| Memory size | 128 GB | 4 GB |
|---|---|---|
| Memory type | HBM2E | GDDR5 |
| Memory bus width | 8192 bit | 256 bit |
| Bandwidth | 3,277 GB/s | 174.3 GB/s |
Render Configuration
| Shading units | 14080 | 2048 |
|---|---|---|
| TMUs | 880 | 128 |
| ROPs | 0 | 32 |
| Compute units | 220 | 32 |
| Cache L1 | 16 KB (per CU) | 16 KB (per CU) |
| Cache L2 | 16 MB | 512 KB |
| gpu.details.mcm | 2 | — |
Performance
| Pixel rate | 0 MPixel/s | 27.20 GPixel/s |
|---|---|---|
| Texture rate | 1,496 GTexel/s | 108.8 GTexel/s |
| FP16 (half) performance | 383.0 TFLOPS (8:1) | 3.482 TFLOPS (1:1) |
| FP32 (float) performance | 47.87 TFLOPS | 3.482 TFLOPS |
| FP64 (double) performance | 47.87 TFLOPS (1:1) | 217.6 GFLOPS (1:16) |
Dimensions & Outputs
| Slot width | Dual-slot | MXM Module |
|---|---|---|
| Length | 267 mm 10.5 inches | — |
| Width | 111 mm 4.4 inches | — |
| TDP | 500 W | 250 W |
| Suggested PSU | 900 W | — |
| Outputs | No outputs | No outputs |
| Power connectors | 2x 8-pin | — |
API Support & Features
| DirectX | — | 12 (12_0) |
|---|---|---|
| OpenGL | — | 4.6 |
| OpenCL | 3.0 | 2.0 |
| Vulkan | — | 1.2 |
| Shader model | — | 6.3 |
Other Features
Mobile graphics
| Release date | — | Nov 23rd, 2014 |
|---|---|---|
| Generation | — | Crystal System (R9 M200) |
| Production | — | End-of-life |
| Interface | — | MXM-B (3.0) |
| Predecessor | — | Solar System |
| Successor | — | Mobility Radeon |
