Interface: PCI-E x16 RAM: 4GB GDDR5 Dimensions: 8 x 1.5 x 4.5 inches (20.3 x 11.5 x 3.8 cm) Memory Bus: 128 bits Memory Clock Speed: 1341 MHz Recommended PSU: 300W minimum Crossfire Support: No Maximum displays: 3 OpenGL: 4.5 This product is sourced in Vietnam and posted from Vietnam.