Dual Intel Xeon E5-2690 UnixBench Multi Threaded - ServeTheHome
Dual Intel Xeon E5-2690 UnixBench Single Threaded - ServeTheHome
Intel Xeon E5-2680 v4 vs Intel Xeon E5-2690 v4: What is the difference?
Intel Xeon E5-2699 V4 benchmarking the top end E5 V4 CPU
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. :