AMD Radeon RX 560X vs NVIDIA GeForce GTX 660
What is the difference between AMD Radeon RX 560X and NVIDIA GeForce GTX 660. Find out which graphics card has better performance.
Graphics Processor (GPU)
| Polaris 21 | GPU Name | GK106 |
| Polaris 21 XT (215-0908004) | Model number | GK106-400-A1 |
| GCN 4.0 | Architecture | Kepler |
| GlobalFoundries | Foundry | TSMC |
| 14 nm | Process Size | 28 nm |
| 3,000 million | Transistors | 2,540 million |
| 123 mm² | Die Size | 221 mm² |
Graphics Card
| Apr 11th, 2018 | Release Date | Sep 6th, 2012 |
| Polaris (RX 500X) | Family | GeForce 600 |
| Active | Production | End-of-life |
| Polaris | Predecessor | GeForce 500 |
| 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 | 192 bit |
| 112.0 GB/s | Bandwidth | 144.2 GB/s |
Performance
| 20.40 GPixel/s | Pixel fillrate | 20.64 GPixel/s |
| 81.60 GTexel/s | Texture fillrate | 82.56 GTexel/s |
| 2.611 TFLOPS | FP32 (float) performance | 1.981 TFLOPS |
| 163.2 GFLOPS (1:16) | FP64 (double) performance | 82.56 GFLOPS (1:24) |
Clock Speeds
| 1175 MHz | Base Clock | 980 MHz |
| 1275 MHz | Boost Clock | 1032 MHz |
| 1750 MHz 7 Gbps effective | Memory Clock | 1502 MHz 6 Gbps effective |
Render Config
| 1024 | Shading Units | 960 |
| 64 | TMUs | 80 |
| 16 | ROPs | 24 |
| 16 KB (per CU) | L1 Cache | 16 KB (per SMX) |
| 1024 KB | L2 Cache | 384 KB |
Board Design
| Dual-slot | Slot Width | Dual-slot |
| 170 mm 6.7 inches | Length | 241 mm 9.5 inches |
| 75 W | Thermal design power (TDP) | 140 W |
| 250 W | Suggested PSU | 300 W |
| 1x DVI 1x HDMI 1x DisplayPort | Display Connectors | 2x DVI 1x HDMI 1x DisplayPort |
| None | Power Connectors | 1x 6-pin |
| C994 | Board Number | P2030 |
API support
| 12 (12_0) | DirectX | 12 (11_0) |
| 4.6 | OpenGL | 4.6 |
| 2.1 | OpenCL | 3.0 |
| 1.2 | Vulkan | 1.1 |
| 6.4 | Shader Model | 5.1 |