I found a pile of old xeon, two of them being pga instead of lga, pretty fun ! They all date from before 2010, the strongest ones being 4c8t : r/ intel
Apple Mac Pro Mid 2010 2 x 2.4GHz Quad-Core Intel Xeon (MC561LL/A) – UNICOM, Inc.
Dell Precision 7510 Intel Xeon CPU E3-1535M v5 @ 2.90GHz, 32GB RAM, 500GB SSD with Microsoft Windows 10 Professional and Microsoft Office 2010 Home & Business.
Intel to launch 13 Westmere 32nm Xeon processors in March 2010 | TweakTown
Pair X5690 3.46GHz XEON CPU Mac Pro 5,1 2010 2012 upgrade kit – dqupgrade
Apple Mac Pro A1289 MacPro5,1 (Mid 2010/Nehalem) Quad Core Intel Xeon W3530 @ 2.8GHz / 6GB DDR 1066MHz SDRAM / 500GB Seagate ST500DM002 HDD / OS X Mountain Lion / ATI Radeon HD 5770
OWC 6-Core 2.93GHz Intel Xeon X5670 Gulftown... at MacSales.com