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. :
Decision Support benchmark: Nieuws.be - The Intel Xeon 5670: Six Improved Cores
Intel Xeon X5670 PassMark CPU Mark (Multi-Thread) - CPUAgent
Intel Xeon X5670 Premiere Pro CC 2019 Benchmark - CPUAgent
Intel Xeon X5670 - AT80614005130AA / BX80614X5670
Xeon X5670: характеристики, разгон, игровые тесты, покупка и цены