32GB -4x8GB Memory Ram Apple Mac Pro 5.1 2010 Hex Core and 12-Core all CPU's | eBay
A-Tech 8GB (2 x 4GB) PC3-8500 DDR3 1066/1067 MHz RAM for MacBook, MacBook Pro, iMac, Mac Mini (Late 2008, Early/Mid/Late 2009, Mid 2010) | 204-Pin SODIMM Memory Kit at Amazon.com
Amazon.com: OWC 16GB (2 x 8GB) PC8500 DDR3 ECC-R 1066MHz DIMMs Memory Compatible with Mac Pro Early 2009 & Late 2010 'Nehalem' & 'Westmere' Systems and Early 2009 Xserve. (OWC85MP3S8M16GK) : Everything Else
Apple Mac Pro 2010 6-Core 64GB RAM SSD 2TB WIFI OS High Sierra | eBay
16GB Memory Upgrade for 2010 MacBook Pro and Mac mini
Apple Mac Pro 2010 | 6-Core 3.46GHz, 32GB RAM, 1TB NVMe SSD, AMD RX580 8GB | eBay
Amazon.com: A-Tech 32GB Kit (4x8GB) RAM for Apple Mac Pro Early 2009, Mid 2010, Mid 2012 (4-Core, 6-Core, 8-Core, 12-Core) | DDR3 1066MHz PC3-8500R ECC RDIMM 2Rx4 1.5V 240-Pin Registered DIMM Memory
Classic Mac Pro RAM Upgrade Guide (2010-2012) - YouTube
Mac Pro "Six Core" 3.33 (2010/Westmere) Specs (Mid-2010, BTO/CTO, MacPro5,1, A1289, 2314-2*): EveryMac.com
Mac Pro | 2010 | Twelve Core 2.66 GHz - Techable.com