AMD Radeon RX 550 vs NVIDIA GeForce GT 645 OEM
What is the difference between AMD Radeon RX 550 and NVIDIA GeForce GT 645 OEM. Find out which graphics card has better performance.
Graphics Processor (GPU)
| Lexa | GPU Name | GF114 |
| GCN 4.0 | Architecture | Fermi 2.0 |
| GlobalFoundries | Foundry | TSMC |
| 14 nm | Process Size | 40 nm |
| 2,200 million | Transistors | 1,950 million |
| 103 mm² | Die Size | 332 mm² |
Graphics Card
| Apr 20th, 2017 | Release Date | Apr 24th, 2012 |
| Polaris (RX 500) | Family | GeForce 600 |
| Active | Production | End-of-life |
| Arctic Islands | Predecessor | GeForce 500 |
| PCIe 3.0 x8 | Bus Interface | PCIe 2.0 x16 |
Memory
| 2 GB | Memory Size | 1024 MB |
| GDDR5 | Memory Type | GDDR5 |
| 128 bit | Memory Bus | 192 bit |
| 112.0 GB/s | Bandwidth | 91.87 GB/s |
Performance
| 18.93 GPixel/s | Pixel fillrate | 9.312 GPixel/s |
| 37.86 GTexel/s | Texture fillrate | 37.25 GTexel/s |
| 1,211 GFLOPS | FP32 (float) performance | 894.0 GFLOPS |
| 75.71 GFLOPS (1:16) | FP64 (double) performance | 74.50 GFLOPS (1:12) |
Clock Speeds
| 1750 MHz 7 Gbps effective | Memory Clock | 957 MHz 3.8 Gbps effective |
Render Config
| 512 | Shading Units | 288 |
| 32 | TMUs | 48 |
| 16 | ROPs | 24 |
| 16 KB (per CU) | L1 Cache | 64 KB (per SM) |
| 512 KB | L2 Cache | 384 KB |
Board Design
| Dual-slot | Slot Width | Dual-slot |
| 145 mm 5.7 inches | Length | 210 mm 8.3 inches |
| 50 W | Thermal design power (TDP) | 102 W |
| 250 W | Suggested PSU | 300 W |
| 1x DVI 1x HDMI 1x DisplayPort | Display Connectors | 2x DVI 1x mini-HDMI |
API support
| 12 (12_0) | DirectX | 12 (11_0) |
| 4.6 | OpenGL | 4.6 |
| 2.1 | OpenCL | 1.1 |
| 1.2 | Vulkan | N/A |
| 6.4 | Shader Model | 5.1 |