Intel® C621 motherboard with quad-strength graphics support and 12 DDR4 memory slots Up to 4-Way NVIDIA® SLI® and AMD® Crossfire X™ on 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 Performance Up to 4-way multiple-graphic cards The Intel® C621 chipset-based dual socket workstation motherboard features on-demand NVIDIA® GeForce® SLI®, NVIDIA Quadro® SLI®, and AMD® CrossFireX™ technology. 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® GeForce® 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 overclocking Dual Intel® Xeon® CPU overclocking, pushes the power processing power beyond the extreme ASUS WS C621E SAGE breaks performance barriers, giving you the capability to overclock dual Xeon® CPUs. With its unique BIOS mechanism dedicated to boosting CPU performance, WS C621E SAGE can deliver incredible system speed. Expandable and Scalable Supporting up to 12 DDR4 Error-correcting code memory (ECC Memory) Keeps your system running at a brisk pace, even when running multiple hardware-intensive programs! ASUS WS C621E SAGE supports up to 12 DDR4 error-correcting code (ECC) memory to ensure fast and responsive system performance, even when running multiple RAM-intensive applications - such as video, audio and image editing applications - simultaneously. Lightning-fast storage speed with NVMe PCIe SSD RAID 0 support With support for multiple NVMe PCIe storage devices configured as a RAID 0 array, ASUS WS C621E SAGEA lets you enjoy lightning-fast data transfers that are far beyond those provided by single drives. Super-fast transfers at up to 32Gbps with onboard four U.2 and M.2 ASUS WS C621E SAGE is built with onboard M.2 and U.2 connectors to fit both 2.5-inch NVMe and M.2 SSDs. By using the maximum PCIe Gen3.0 x4 bandwidth of 32Gbps, WS C621E SAGE enables data transfer speeds that are up to 5.3X faster than traditional storage devices. 10Gb/s USB 3.1 Gen2 onboard With backward-compatible USB 3.1 Gen2 Type-A and reversible USB 3.1 Gen2 Type-C ports, you'll experience ultimate connection flexibility and data-transfer speeds of up to 10Gb/s - twice as fast as USB 3.0 or USB 3.1 Gen1.