Up to 4-Way NVIDIA® SLI® and AMD® Crossfire Xon demand Two-way Xeon® CPU OC tuning for extreme performance Superb scalability and connectivity with onboard U.2, M.2, and USB 3.1 Type-C and Type-A Built with premium components for excellent power efficiency Easy Management and maintenance with ASUS Control Center (ACC) management software and USB BIOS Flashback Extreme Power and PerformanceUp to 4-way multiple-graphic cardsThe Intel® C621 chipset-based dual socket workstation motherboard features on-demand NVIDIA® SLIand AMD® CrossFireXtechnology.ASUS WS C621E SAGE accommodates up to four dual-width graphic cards with a four true PCIe Gen3 x16 link to unleash maximum graphic performance. With support for up to 4-way NVIDIA® SLI, AMD CrossFireX, and 2-Way NVIDIA Quadro® SLI, WS C621E SAGE is an excellent choice for content creators, mechanical or architectural engineers, and anyone with processing-intensive workloads.Extraordinary performance with dual Intel® Xeon® CPU overclock