AMD Radeon R9 270 1024SP vs AMD Radeon R9 M390 Mac Edition
What is the difference between AMD Radeon R9 270 1024SP and AMD Radeon R9 M390 Mac Edition. Find out which graphics card has better performance.
Graphics Processor (GPU)
| Pitcairn | GPU Name | Pitcairn |
| Pitcairn PRO (215-0828062) | Model number | Pitcairn PRO (215-0828062) |
| GCN 1.0 | Architecture | GCN 1.0 |
| TSMC | Foundry | TSMC |
| 28 nm | Process Size | 28 nm |
| 2,800 million | Transistors | 2,800 million |
| 212 mm² | Die Size | 212 mm² |
Graphics Card
| Mar 13th, 2015 | Release Date | May 5th, 2015 |
| Volcanic Islands (R9 200) | Family | Crystal System (R9 M300) |
| Active | Production | End-of-life |
| Sea Islands | Predecessor | Solar System |
| PCIe 3.0 x16 | Bus Interface | PCIe 3.0 x16 |
Memory
| 2 GB | Memory Size | 2 GB |
| GDDR5 | Memory Type | GDDR5 |
| 256 bit | Memory Bus | 256 bit |
| 153.6 GB/s | Bandwidth | 174.7 GB/s |
Performance
| 29.60 GPixel/s | Pixel fillrate | 30.66 GPixel/s |
| 59.20 GTexel/s | Texture fillrate | 61.31 GTexel/s |
| 1.894 TFLOPS | FP32 (float) performance | 1.962 TFLOPS |
| 118.4 GFLOPS (1:16) | FP64 (double) performance | 122.6 GFLOPS (1:16) |
Clock Speeds
| 1200 MHz 4.8 Gbps effective | Memory Clock | 1365 MHz 5.5 Gbps effective |
Render Config
| 1024 | Shading Units | 1024 |
| 64 | TMUs | 64 |
| 32 | ROPs | 32 |
| 16 | Compute Units | 16 |
| 16 KB (per CU) | L1 Cache | 16 KB (per CU) |
| 512 KB | L2 Cache | 512 KB |
Board Design
| Dual-slot | Slot Width | MXM Module |
| 150 W | Thermal design power (TDP) | 80 W |
| 2x DVI 1x HDMI 1x DisplayPort | Display Connectors | No outputs |
| 1x 6-pin | Power Connectors | None |
| C403 | Board Number | C608 |
API support
| 12 (11_1) | DirectX | 12 (11_1) |
| 4.6 | OpenGL | 4.6 |
| 1.2 | OpenCL | 1.2 |
| 1.2 | Vulkan | 1.2 |
| 5.1 | Shader Model | 5.1 |