Amazon.com: ASUS Graphics Cards R9290X-DC2OC-4GD5 : Electronics
ASUS Radeon R9 290X 4GB GDDR5 PCI Express 3.0 CrossFireX Support Video Card - Bundled with BF4 coupon and door hanger R9290X-G-4GD5 GPUs / Video Graphics Cards - Newegg.com
ASUS Radeon R9 290 DirectCU II OC Review | bit-tech.net
ASUS Radeon R9 290X 4GB GDDR5 PCI Express 3.0 CrossFireX Support Video Card - Bundled with BF4 coupon and door hanger R9290X-G-4GD5 GPUs / Video Graphics Cards - Newegg.com