Took you long enough! EVGA finally shows off the dual socket SR-X - PC Perspective
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Amazon.com: Supermicro REV 2.01 Dual Intel Socket LGA 1366 ATX Server Motherboard X8DTL-IF by EbidDealz : Electronics
Foxconn 02010HE00-600-G Dual Socket LGA 1366 Intel Xeon 5600 Processor Support Server Motherboard
Jingsha X58 Dual Cpu Motherboard Set Lga 1366 Socket Onboard Cpu L5520 2.27ghz X58 Chipset 4 Channles Support Sata 2.0 Usb 3.0 - Motherboards - AliExpress
ASUS Z8NA-D6 Dual LGA 1366 Intel 5500 ATX Dual Intel Xeon 5500 and 5600 Series Server Motherboard - Newegg.com