Sapphire Radeon HD 5870 CrossFireX 1GB GDDR5
Radeon HD 5870, PCI-E 2.0, 1024, GDDR5,, Divers: System Requirements 500 Watt or greater power supply with 2x 75W 6 pin PCI Express power connector recommended, 600 Watt and four 6 pin connectors for ATI CrossFireX Technology in dual mode