AMD Radeon Instinct MI8 vs AMD Radeon RX 460
Graphics Processor
| GPU model | Fiji | Baffin |
|---|---|---|
| GPU variant | Fiji XT | Baffin PRO |
| Architecture | GCN 3.0 | GCN 4.0 |
| Foundry | TSMC | GlobalFoundries |
| Manufacturing process | 28 nm | 14 nm |
| Number of transistors | 8,900 million | 3,000 million |
| Die size | 596 mm² | 123 mm² |
Graphics Card
| Release date | Dec 12th, 2016 | Aug 8th, 2016 |
|---|---|---|
| Generation | Radeon Instinct | Arctic Islands |
| Production | End-of-life | Active |
| Interface | PCIe 3.0 x16 | PCIe 3.0 x8 |
| Predecessor | — | Pirate Islands |
| Successor | — | Polaris |
Clocks
| GPU clock | 1000 MHz | — |
|---|---|---|
| Memory clock | 500 MHz 1000 Mbps effective | 1750 MHz 7 Gbps effective |
| Base clock | — | 1090 MHz |
| Boost clock | — | 1200 MHz |
Memory Configuration
| Memory size | 4 GB | 2 GB |
|---|---|---|
| Memory type | HBM | GDDR5 |
| Memory bus width | 4096 bit | 128 bit |
| Bandwidth | 512.0 GB/s | 112.0 GB/s |
Render Configuration
| Shading units | 4096 | 896 |
|---|---|---|
| TMUs | 256 | 56 |
| ROPs | 64 | 16 |
| Compute units | 64 | 14 |
| Cache L1 | 16 KB (per CU) | 16 KB (per CU) |
| Cache L2 | 2 MB | 1024 KB |
Performance
| Pixel rate | 64.00 GPixel/s | 19.20 GPixel/s |
|---|---|---|
| Texture rate | 256.0 GTexel/s | 67.20 GTexel/s |
| FP16 (half) performance | 8.192 TFLOPS (1:1) | 2.150 TFLOPS (1:1) |
| FP32 (float) performance | 8.192 TFLOPS | 2.150 TFLOPS |
| FP64 (double) performance | 512.0 GFLOPS (1:16) | 134.4 GFLOPS (1:16) |
Dimensions & Outputs
| Slot width | Dual-slot | Dual-slot |
|---|---|---|
| Length | 152 mm 6 inches | 170 mm 6.7 inches |
| Width | 111 mm 4.4 inches | — |
| TDP | 175 W | 75 W |
| Suggested PSU | 450 W | 250 W |
| Outputs | No outputs | 1x DVI1x HDMI1x DisplayPort |
| Power connectors | 1x 8-pin | None |
| Board number | — | C994 |
API Support & Features
| DirectX | 12 (12_0) | 12 (12_0) |
|---|---|---|
| OpenGL | 4.6 | 4.6 |
| OpenCL | 2.0 | 2.1 |
| Vulkan | 1.2 | 1.2 |
| Shader model | 6.3 | 6.4 |
