Intel Xeon E3-1240 Power Consumption CPU Comparison - ServeTheHome
Used Intel Xeon E3 1220 V2 Processor 3.1GHz 8MB 4 Core 1333MHz SR0PH LGA 1155 CPU - AliExpress
Intel Xeon E3-1220 Sandy Bridge Benchmarks and Review
Intel Xeon E3-1220 V6 Linux Benchmarks and Review
Intel Xeon E3-1220 Sandy Bridge Benchmarks and Review
CPU-Z Benchmarks on various Synology models - Hope this helps give a rough idea of the CPU power difference between models. Also included 2 other VMs running on Windows Hyper-V Server. :
Intel Xeon E3-1220 v3 vs Intel Xeon E5-2603 v4: What is the difference?
Intel Xeon E3-1220 Power Consumption Deltas - ServeTheHome
PassMark - CPU Benchmarks - List of Benchmarked CPUs
9-Way Intel Xeon E3 v5 Skylake Benchmarks On Ubuntu Linux Review - Phoronix