AMD Radeon R9 M290X Mac Edition vs AMD Radeon R9 M470X
Graphics Processor
| GPU model | Pitcairn | Emerald |
|---|---|---|
| GPU variant | Pitcairn PRO (215-0828062) | Emerald XT |
| Architecture | GCN 1.0 | GCN 2.0 |
| Foundry | TSMC | TSMC |
| Manufacturing process | 28 nm | 28 nm |
| Number of transistors | 2,800 million | 2,080 million |
| Die size | 212 mm² | 160 mm² |
Mobile graphics
| Release date | Nov 23rd, 2014 | May 15th, 2016 |
|---|---|---|
| Generation | Crystal System (R9 M200) | Crystal System (R9 M400) |
| Predecessor | Solar System | Solar System |
| Successor | Mobility Radeon | Mobility Radeon |
| Production | End-of-life | End-of-life |
| Interface | PCIe 3.0 x16 | PCIe 3.0 x16 |
Clocks
| Base clock | 850 MHz | 1000 MHz |
|---|---|---|
| Boost clock | 975 MHz | 1100 MHz |
| Memory clock | 1365 MHz 5.5 Gbps effective | 1500 MHz 6 Gbps effective |
Memory Configuration
| Memory size | 2 GB | 4 GB |
|---|---|---|
| Memory type | GDDR5 | GDDR5 |
| Memory bus width | 256 bit | 128 bit |
| Bandwidth | 174.7 GB/s | 96.00 GB/s |
Render Configuration
| Shading units | 1024 | 896 |
|---|---|---|
| TMUs | 64 | 56 |
| ROPs | 32 | 16 |
| Compute units | 16 | 14 |
| Cache L1 | 16 KB (per CU) | 16 KB (per CU) |
| Cache L2 | 512 KB | 256 KB |
Performance
| Pixel rate | 31.20 GPixel/s | 17.60 GPixel/s |
|---|---|---|
| Texture rate | 62.40 GTexel/s | 61.60 GTexel/s |
| FP32 (float) performance | 1.997 TFLOPS | 1.971 TFLOPS |
| FP64 (double) performance | 124.8 GFLOPS (1:16) | 123.2 GFLOPS (1:16) |
Dimensions & Outputs
| Slot width | MXM Module | — |
|---|---|---|
| TDP | 80 W | unknown |
| Outputs | No outputs | No outputs |
| Power connectors | None | — |
| Board number | C608 | — |
API Support & Features
| DirectX | 12 (11_1) | 12 (12_0) |
|---|---|---|
| OpenGL | 4.6 | 4.6 |
| OpenCL | 1.2 | 2.0 |
| Vulkan | 1.2 | 1.2 |
| Shader model | 5.1 | 6.3 |
