MSI GeForce GTX 1080 Ti 11GB GDDR5X PCI Express 3.0 x16 SLI Support Video Card GeForce GTX 1080 Ti GAMING X 11G GPUs / Video Graphics Cards - Newegg.com
NVIDIA GeForce GTX 1080 Graphics Card Unleashed - $599 US For 8 GB GDDR5X, 2.1 GHz Overclock Speeds and Performance Faster Than Titan X and 980 SLI
ASUS ROG GeForce GTX 1080 8GB GDDR5X PCI Express 3.0 Video Card STRIX-GTX1080-A8G-GAMING GPUs / Video Graphics Cards - Newegg.com