AMD Radeon Instinct MI6 vs AMD Radeon Sky 900
Graphics Processor
| GPU model | Ellesmere | Tahiti |
|---|---|---|
| GPU variant | Ellesmere XT | Orthrus |
| Architecture | GCN 4.0 | GCN 1.0 |
| Foundry | GlobalFoundries | TSMC |
| Manufacturing process | 14 nm | 28 nm |
| Number of transistors | 5,700 million | 4,313 million |
| Die size | 232 mm² | 352 mm² |
Graphics Card
| Release date | Dec 12th, 2016 | Mar 27th, 2013 |
|---|---|---|
| Generation | Radeon Instinct | Radeon Sky |
| Production | Active | End-of-life |
| Interface | PCIe 3.0 x16 | PCIe 3.0 x16 |
Clocks
| Base clock | 1120 MHz | 825 MHz |
|---|---|---|
| Boost clock | 1233 MHz | 950 MHz |
| Memory clock | 1750 MHz 7 Gbps effective | 1250 MHz 5 Gbps effective |
Memory Configuration
| Memory size | 8 GB | 3 GB |
|---|---|---|
| Memory type | GDDR5 | GDDR5 |
| Memory bus width | 256 bit | 384 bit |
| Bandwidth | 224.0 GB/s | 240.0 GB/s |
Render Configuration
| Shading units | 2304 | 1792 |
|---|---|---|
| TMUs | 144 | 112 |
| ROPs | 32 | 32 |
| Compute units | 36 | 28 |
| Cache L1 | 16 KB (per CU) | 16 KB (per CU) |
| Cache L2 | 2 MB | 768 KB |
Performance
| Pixel rate | 39.46 GPixel/s | 30.40 GPixel/s |
|---|---|---|
| Texture rate | 177.6 GTexel/s | 106.4 GTexel/s |
| FP16 (half) performance | 5.682 TFLOPS (1:1) | — |
| FP32 (float) performance | 5.682 TFLOPS | 3.405 TFLOPS |
| FP64 (double) performance | 355.1 GFLOPS (1:16) | 851.2 GFLOPS (1:4) |
Dimensions & Outputs
| Slot width | Single-slot | Dual-slot |
|---|---|---|
| Length | 241 mm 9.5 inches | 305 mm 12 inches |
| Width | 111 mm 4.4 inches | 111 mm 4.4 inches |
| TDP | 150 W | 300 W |
| Suggested PSU | 450 W | 700 W |
| Outputs | No outputs | 1x DVI1x mini-DisplayPort |
| Power connectors | 1x 6-pin | 2x 8-pin |
| Board number | D122 | C476 |
API Support & Features
| DirectX | 12 (12_0) | 12 (11_1) |
|---|---|---|
| OpenGL | 4.6 | 4.6 |
| OpenCL | 2.1 | 1.2 |
| Vulkan | 1.2 | 1.2 |
| Shader model | 6.4 | 5.1 |
