ADVenturePO`s Cinebench - R15 score: 4522 cb with a Xeon E5 2690 v4
Intel Xeon E5-2699 V4 benchmarking the top end E5 V4 CPU
Intel Xeon E5-2660 vs Intel Xeon E5-2690: What is the difference?
Intel Xeon E5-2698 V4 Benchmarks - with a SuperBlade twist
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