Hello, this depends on your workload, the more core you have the more workload you can run. However, you should be careful with how you do your calculcation regarding logical core, here are some good reading material Hyper-Threading Gotcha with Virtual Machine vCPU Sizing - Wahl Network& When to Overcommit vCPU:pCPU for Monster VMs | VMware vSphere Blog - VMware Blogs - The main thing to consider is vCPU:Core ratio, on most workload you can do oversubcription of 3:1 or 4:1 as an example. It is quite common to see some level of oversubcription and this will entirely depend on your environment and comfort level.
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