Intel Xeon E3-1220 vs Intel Xeon E3-1240: What is the difference?
PassMark - CPU Benchmarks - List of Benchmarked CPUs
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. :
Solved: 390, CPU upgrade - Page 2 - Dell Community
Mobile Processors - Benchmark List - NotebookCheck.net Tech
CPU Benchmarks
Benchmarking Performance: CPU Office Tests - The Intel Xeon W Review: W-2195, W-2155, W-2123, W-2104 and W-2102 Tested
Intel Xeon E3-1220 V5 PassMark Single Thread Mark - CPUAgent