EVGA has the manufacturer refurbished ("B-stock") GeForce GTX 1080 FTW DT GAMING currently listed at $423.99 (+ tax/shipping). Comes with a 1-year warranty.
Specifications:
- CUDA Cores: 2560
- Base Clock: 1607 MHz
- Boost Clock: 1733 MHz
- Speed: 10 Gbps
- Configuration: 8 GB
- Interface: GDDR5X
- Interface Width: 256-bit
- Bandwidth: 320 GB/s
- Power Consumption: 215 W
- Display Connectors: 1 x DVI-D DL, 3 x DisplayPort 1.4, 1 x HDMI 2.0b