AMD Radeon HD 7770 GHz Edition vs AMD Radeon Pro 555
What is the difference between AMD Radeon HD 7770 GHz Edition and AMD Radeon Pro 555. Find out which graphics card has better performance.
Graphics Processor (GPU)
| Cape Verde | GPU Name | Polaris 21 |
| Cape Verde XT | Model number | Polaris 21 PRO |
| GCN 1.0 | Architecture | GCN 4.0 |
| TSMC | Foundry | GlobalFoundries |
| 28 nm | Process Size | 14 nm |
| 1,500 million | Transistors | 3,000 million |
| 123 mm² | Die Size | 123 mm² |
Graphics Card
| Feb 15th, 2012 | Release Date | Jun 5th, 2017 |
| Southern Islands (HD 7700) | Family | Radeon Pro Mac (500 Series) |
| End-of-life | Production | Active |
| PCIe 3.0 x16 | Bus Interface | PCIe 3.0 x8 |
Memory
| 1024 MB | Memory Size | 2 GB |
| GDDR5 | Memory Type | GDDR5 |
| 128 bit | Memory Bus | 128 bit |
| 72.00 GB/s | Bandwidth | 81.60 GB/s |
Performance
| 16.00 GPixel/s | Pixel fillrate | 13.60 GPixel/s |
| 40.00 GTexel/s | Texture fillrate | 40.80 GTexel/s |
| 1,280 GFLOPS | FP32 (float) performance | 1,306 GFLOPS |
| 80.00 GFLOPS (1:16) | FP64 (double) performance | 81.60 GFLOPS (1:16) |
Clock Speeds
| 1125 MHz 4.5 Gbps effective | Memory Clock | 1275 MHz 5.1 Gbps effective |
| 1000 MHz | GPU Clock | 850 MHz |
Render Config
| 640 | Shading Units | 768 |
| 40 | TMUs | 48 |
| 16 | ROPs | 16 |
| 10 | Compute Units | 12 |
| 16 KB (per CU) | L1 Cache | 16 KB (per CU) |
| 256 KB | L2 Cache | 1024 KB |
Board Design
| Dual-slot | Slot Width | IGP |
| 80 W | Thermal design power (TDP) | 75 W |
| 1x DVI 1x HDMI 2x mini-DisplayPort | Display Connectors | No outputs |
| 1x 6-pin | Power Connectors | None |
API support
| 12 (11_1) | DirectX | 12 (12_0) |
| 4.6 | OpenGL | 4.6 |
| 1.2 | OpenCL | 2.1 |
| 1.2 | Vulkan | 1.2 |
| 5.1 | Shader Model | 6.4 |