AMD Radeon HD 7970 vs AMD Radeon R9 M395X Mac Edition
What is the difference between AMD Radeon HD 7970 and AMD Radeon R9 M395X Mac Edition. Find out which graphics card has better performance.
Graphics Processor (GPU)
| Tahiti | GPU Name | Amethyst |
| Tahiti XT (215-0821060) | Model number | Amethyst XT |
| GCN 1.0 | Architecture | GCN 3.0 |
| TSMC | Foundry | TSMC |
| 28 nm | Process Size | 28 nm |
| 4,313 million | Transistors | 5,000 million |
| 352 mm² | Die Size | 366 mm² |
Graphics Card
| Dec 22nd, 2011 | Release Date | May 5th, 2015 |
| Southern Islands (HD 7900) | Family | Crystal System (R9 M300) |
| End-of-life | Production | Active |
| Northern Islands | Predecessor | Solar System |
| PCIe 3.0 x16 | Bus Interface | MXM-B (3.0) |
Memory
| 3 GB | Memory Size | 4 GB |
| GDDR5 | Memory Type | GDDR5 |
| 384 bit | Memory Bus | 256 bit |
| 264.0 GB/s | Bandwidth | 174.7 GB/s |
Performance
| 29.60 GPixel/s | Pixel fillrate | 29.09 GPixel/s |
| 118.4 GTexel/s | Texture fillrate | 116.4 GTexel/s |
| 3.789 TFLOPS | FP32 (float) performance | 3.723 TFLOPS |
| 947.2 GFLOPS (1:4) | FP64 (double) performance | 232.7 GFLOPS (1:16) |
Clock Speeds
| 1375 MHz 5.5 Gbps effective | Memory Clock | 1365 MHz 5.5 Gbps effective |
| 925 MHz | GPU Clock | 909 MHz |
Render Config
| 2048 | Shading Units | 2048 |
| 128 | TMUs | 128 |
| 32 | ROPs | 32 |
| 32 | Compute Units | 32 |
| 16 KB (per CU) | L1 Cache | 16 KB (per CU) |
| 768 KB | L2 Cache | 512 KB |
Board Design
| Dual-slot | Slot Width | MXM Module |
| 250 W | Thermal design power (TDP) | 250 W |
| 1x DVI 1x HDMI 2x mini-DisplayPort | Display Connectors | No outputs |
| 1x 6-pin + 1x 8-pin | Power Connectors | None |
API support
| 12 (11_1) | DirectX | 12 (12_0) |
| 4.6 | OpenGL | 4.6 |
| 1.2 | OpenCL | 2.0 |
| 1.2 | Vulkan | 1.2 |
| 5.1 | Shader Model | 6.3 |