| Spec | RX 6600 XT | GTX 1660 |
|---|---|---|
| Performance | ||
| FP32 Performance | 10.6 TFLOPS+111% | 5.03 TFLOPS |
| FP16 Performance | 21.21 TFLOPS+111% | 10.05 TFLOPS |
| Shader Units | 2,048+45% | 1,408 |
| Boost Clock | 2,589 MHz+45% | 1,785 MHz |
| Base Clock | 1,968 MHz+29% | 1,530 MHz |
| Memory | ||
| VRAM | 8 GB+33% | 6 GB |
| VRAM Type | GDDR6 | |
| GDDR5 |
| Memory Bus | 128-bit | 192-bit+33% |
| Memory Clock | 2,000 MHz | 2,001 MHz |
| Memory Bandwidth | 256+33% | 192.1 |
| Power | ||
| TDP | 160W | 120W+33% |
| Recommended PSU | 450W | 300W+50% |
| Power Connector | 1x 8-pin | 1x 8-pin |
| Architecture | ||
| Form Factor | desktop | desktop |
| Generation | Navi II(RX 6000) | GeForce 16 |
| Architecture | RDNA 2.0 | Turing |
| GPU Chip | Navi 23 | TU116 |
| Process Node | 7 nm TSMC | 12 nm TSMC |
| Transistors | 11.06 | 6.6+68% |
| Die Size | 237+17% | 284 |
| Features | ||
| Ray Tracing | RT Cores (32) | N/A |
| Ray Accelerators | 32 | N/A |
| DLSS Version | N/A | 2 |
| FSR Version | 2 | N/A |
| Connectivity | ||
| Display Outputs | 1x HDMI 2.1, 3x DisplayPort 1.4a | 1x DVI, 1x HDMI 2.0, 1x DisplayPort 1.4a |
| PCIe Interface | PCIe 4.0 x8 | PCIe 3.0 x16 |
| Physical | ||
| Card Length | 190 mm+17% | 229 mm |
| Slot Size | Dual-slot | Dual-slot |
| Price | ||
| Release Date | 2021-07-30 | 2019-03-14 |
