EVGA - 2010! We have just introduced the world's first 4-way SLI system. A combination of the EVGA X58 4-Way SLI motherboard and GeForce GTX 285 Classified, this setup destroyed all performance
Adamant Computers - Custom Computers and Gaming PC. Asus Prime X299-A II Series DDR4/ Quad CrossFireX & Quad SLI/ SATA3&USB3.1/ M.2&SATA Express/ A&GbE/ ATX
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AS Rock LGA1155 Intel Z77 Quad CrossFirex Quad SLI SATA3 USB3.0 A GbE MATX Motherboard Z77 PROFESSIONAL-M
NVIDIA GeForce GTX 480 4-way SLI exemplifies law of diminishing returns | Engadget
NVIDIA's Quad-SLI Graphics Makes a Comeback - NVIDIA's 790i Arrives: SLI Rides Again
NVIDIA unleashes Quad SLI that you can DIY | Ars Technica