Available at newegg.com, ETASIS ET750 750W Power Supply features True 750W stable power with Maximum peaks of 850W, ball bearing fan, 4 +12V Rails, SLI Certified, CrossFire Ready, 24Pin Main Connector.
Available at newegg.com, CORSAIR CMPSU-650TX 650W Power Supply features 650W Maximum Power, NVIDIA SLI Certified, compatibility with the ATX12V v2.2 and EPS12V standards, a 120mm variable speed fan. SLI Ready, CrossFire Ready, 80 PLUS Certified. Compatible with Core i7 processors.
Available at newegg.com. Thermaltake Purepower W0121RU 600W ATX12V V2.0 SLI Ready CrossFire Ready Power
Supply. With two 6-pin PCI-E connectors, the Thermaltake Purepower W0121RU is ideal for
building up a SLI or CrossFire gaming system.