AMD Radeon HD 6930 vs AMD Radeon R9 M390 Mac Edition
What is the difference between AMD Radeon HD 6930 and AMD Radeon R9 M390 Mac Edition. Find out which graphics card has better performance.
Graphics Processor (GPU)
| Cayman | GPU Name | Pitcairn |
| Cayman CE (215-0807105) | Model number | Pitcairn PRO (215-0828062) |
| TeraScale 3 | Architecture | GCN 1.0 |
| TSMC | Foundry | TSMC |
| 40 nm | Process Size | 28 nm |
| 2,640 million | Transistors | 2,800 million |
| 389 mm² | Die Size | 212 mm² |
Graphics Card
| Dec 1st, 2011 | Release Date | May 5th, 2015 |
| Northern Islands (HD 6900) | Family | Crystal System (R9 M300) |
| End-of-life | Production | End-of-life |
| Evergreen | Predecessor | Solar System |
| PCIe 2.0 x16 | Bus Interface | PCIe 3.0 x16 |
Memory
| 1024 MB | Memory Size | 2 GB |
| GDDR5 | Memory Type | GDDR5 |
| 256 bit | Memory Bus | 256 bit |
| 153.6 GB/s | Bandwidth | 174.7 GB/s |
Performance
| 24.00 GPixel/s | Pixel fillrate | 30.66 GPixel/s |
| 60.00 GTexel/s | Texture fillrate | 61.31 GTexel/s |
| 1.920 TFLOPS | FP32 (float) performance | 1.962 TFLOPS |
| 480.0 GFLOPS (1:4) | FP64 (double) performance | 122.6 GFLOPS (1:16) |
Clock Speeds
| 1200 MHz 4.8 Gbps effective | Memory Clock | 1365 MHz 5.5 Gbps effective |
| 750 MHz | GPU Clock | 958 MHz |
Render Config
| 1280 | Shading Units | 1024 |
| 80 | TMUs | 64 |
| 32 | ROPs | 32 |
| 20 | Compute Units | 16 |
| 8 KB (per CU) | L1 Cache | 16 KB (per CU) |
| 512 KB | L2 Cache | 512 KB |
Board Design
| Dual-slot | Slot Width | MXM Module |
| 186 W | Thermal design power (TDP) | 80 W |
| 2x DVI 1x HDMI 2x mini-DisplayPort | Display Connectors | No outputs |
| 2x 6-pin | Power Connectors | None |
API support
| 11.2 (11_0) | DirectX | 12 (11_1) |
| 4.4 | OpenGL | 4.6 |
| 1.2 | OpenCL | 1.2 |
| N/A | Vulkan | 1.2 |
| 5.0 | Shader Model | 5.1 |