AMD Radeon Pro 555X vs NVIDIA Quadro P620
What is the difference between AMD Radeon Pro 555X and NVIDIA Quadro P620. Find out which graphics card has better performance.
Graphics Processor (GPU)
| Polaris 21 | GPU Name | GP107 |
| GCN 4.0 | Architecture | Pascal |
| GlobalFoundries | Foundry | Samsung |
| 14 nm | Process Size | 14 nm |
| 3,000 million | Transistors | 3,300 million |
| 123 mm² | Die Size | 132 mm² |
Graphics Card
| Jul 16th, 2018 | Release Date | Feb 1st, 2018 |
| Radeon Pro Mac (500X Series) | Family | Quadro (Px200) |
| Active | Production | Active |
| PCIe 3.0 x8 | Bus Interface | PCIe 3.0 x16 |
Memory
| 4 GB | Memory Size | 2 GB |
| GDDR5 | Memory Type | GDDR5 |
| 128 bit | Memory Bus | 128 bit |
| 94.08 GB/s | Bandwidth | 80.13 GB/s |
Performance
| 14.51 GPixel/s | Pixel fillrate | 21.66 GPixel/s |
| 43.54 GTexel/s | Texture fillrate | 43.33 GTexel/s |
| 1,393 GFLOPS (1:1) | FP16 (half) performance | 21.66 GFLOPS (1:64) |
| 1,393 GFLOPS | FP32 (float) performance | 1,386 GFLOPS |
| 87.07 GFLOPS (1:16) | FP64 (double) performance | 43.33 GFLOPS (1:32) |
Clock Speeds
| 1470 MHz 5.9 Gbps effective | Memory Clock | 1252 MHz 5 Gbps effective |
Render Config
| 768 | Shading Units | 512 |
| 48 | TMUs | 32 |
| 16 | ROPs | 16 |
| 16 KB (per CU) | L1 Cache | 48 KB (per SM) |
| 1024 KB | L2 Cache | 1024 KB |
Board Design
| IGP | Slot Width | Single-slot |
| 75 W | Thermal design power (TDP) | 40 W |
| No outputs | Display Connectors | 4x mini-DisplayPort |
| None | Power Connectors | None |
API support
| 12 (12_0) | DirectX | 12 (12_1) |
| 4.6 | OpenGL | 4.6 |
| 2.1 | OpenCL | 3.0 |
| 1.2 | Vulkan | 1.2 |
| 6.4 | Shader Model | 6.4 |