SAP S&D - Intel's Xeon E5-2600 V2: 12-core Ivy Bridge EP for Servers
Intel Xeon E5-2690 v2 | Processor Benchmarks | PC Builds
Performance Comparison: E5-2690 vs E5-2687W | Puget Systems
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. :
CPU Benchmarks - Intel Haswell-EP Xeon 12 Core Review: E5-2650L V3 and E5- 2690 V3