Amazon.com: Used Intel Xeon E3 1270 V3 1270V3 Processor 3.5GHz LGA 1150 8MB Quad Core CPU SR151 : Electronics
Used INTEL XEON E5 2667 V2 SR19W CPU 8 CORE 3.3GHz 25M 130W LGA 2011 PROCESSOR - AliExpress
Used Intel Xeon E5 2470V2 2470 V2 2.4GHz Ten-Core Twenty-Thread CPU Processor 25M 95W LGA 1356 - AliExpress
Wholesale used Intel Xeon Gold 6226R Processor SRGZC 16 Core dell Server CPU From m.alibaba.com
Used - Very Good: Intel Xeon E5-2667 v2 3.3 GHz 130W CM8063501287304 Server Processor - Newegg.com
intel XEON E3-1275v2 8M 3.5GHz 4C8T TDP 77 W LGA1155 Used difficult to get | eBay
used Intel Xeon E3 1220 3.1GHz 5 GT/s Quad-Core CPU Processor SR00F LGA1155 - Price history & Review | AliExpress Seller - RE Store | Alitools.io
used Intel xeon e5 2697 v2 2.7GHz 30M QPI 8GT/s LGA 2011 SR19H C2 E5 2697v2 CPU Processor 100% normal work - Price history & Review | AliExpress Seller - RE Store | Alitools.io
The Case for Running AI on CPUs Isn't Dead Yet - IEEE Spectrum