Real World CPU Benchmarks: Rendering, Compression, Video Conversion - Intel Xeon E5-2697 v2 and Xeon E5-2687W v2 Review: 12 and 8 Cores
Intel Xeon E5-2620 V2 versus E5-2620 V3 - Big Improvements
Intel Xeon E5-2697 V4 Sysbench CPU Benchmark - ServeTheHome
Achieve the Best Performance: Intel Xeon E5-2600 "Sandy Bridge" - Microway
Best Intel Xeon Processors for SQL Server – Glenn's SQL Server Performance
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. :
2x Intel Xeon E5-2670 vs AMD 1950X Threadripper - CPU Benchmark - RootUsers
Intel Xeon E5-2400 and E5-2600 Series Processor Comparison with List Prices
Building a 32-Thread Xeon Monster PC for Less Than the Price of a Flagship Core i7 > Benchmarks: Gaming | TechSpot
Intel Xeon D-1587 benchmarks - 16 core Xeon D is here
Intel Xeon E5-2699 V4 benchmarking the top end E5 V4 CPU
Intel Xeon 2620 V2 vs. V3 CPU: Benchmarked | Pogo Tech Blog