Used - Very Good: Intel Core i5-6400 - Core i5 6th Gen Skylake Quad-Core 2.7 GHz LGA 1151 65W Intel HD Graphics 530 Desktop Processor - BX80662I56400 - Newegg.com
Used Intel Core i5 6400 2.7GHz 6M Cache Quad-Core 65W CPU Processor SR2BY LGA 1151 - AliExpress
Acer Predator AG3-710-UW11 Desktop PC with Intel Core i5-6400 Processor, 8GB Memory, 1TB Hard Drive and Windows 10 Home (Monitor Not Included) - Walmart.com
6Th Gen Intel Core i5-6400 LGA 1151 CPU Processor 2.70GHz-3.3GHz Quad-Core | eBay