Asus STRIX GTX 970 DirectCU II OC Review - Still Worth Getting One?
Refurbished: ASUS GeForce GTX 970 4GB GDDR5 PCI Express 3.0 SLI Support G-SYNC Support Video Card STRIX-GTX970-DC2OC-4GD5 GPUs / Video Graphics Cards - Newegg.com
ASUS GeForce GTX 970 4GB STRIX OC Video Card Review
ASUS GTX 970 DirectCU II Black OC Specs | TechPowerUp GPU Database