Lenovo ST650 V2 Platinum 8352Y 32C 205W 2.2GHZ

SR650 V2 Silver 4314 16C 135W 2.4GHZ

Lenovo Part# 4XG7A63455

CPU Processors and Chipsets – Upgrade - Hexadeca-core (16 Core) - 135 W Thermal Design Power - Intel - Xeon Silver - 3rd Gen Processor Generation - 32 Processor Threads - 24 MB L3 Cache - 2.40 GHz Clock Speed - Socket LGA-4189

ST550 Xeon Silver 4208

Lenovo Part# 4XG7A14812

CPU Processors and Chipsets – Upgrade - Octa-core (8 Core) - 85 W Thermal Design Power - Intel - Xeon Silver - 11 MB L3 Cache - 2.10 GHz Clock Speed - Socket 3647 - 4208 Product Model - 14 nm Process Technology - 1 Year Limited ...

Xeon Silver 4208 without Fan

Lenovo Part# 4XG7A37935

CPU Processors and Chipsets – Upgrade - Octa-core (8 Core) - 85 W Thermal Design Power - Intel - Xeon Silver - 11 MB L3 Cache - 2.10 GHz Clock Speed - Socket 3647 - 4208 Product Model - 14 nm Process Technology - 1 Year Limited ...