Absolutely not truth. With rigth configured OS and cPanel, cPanel runs smooth with 3GB RAM and 2 cores.
Yes, it does runs on 3GB RAM with properly configured OS with 2 cores. I agree, but I did not said that the suggested configuration is the minimum requirments. I suggested above configuration for optimal performance. Minimal requirments and optimial configuration are different boats altogether.
Not for forget that minimum RAM required is 2 GB for CPanel itself and OS does occupy its own share of resources, considering everything. I suggested optimial configuration as
4 GB RAM and 2 CPU cores
and 8 GB RAM with 4 CPU cores or more for VPS for best probable configuration. I hope you got my point now.
Yes, 3 GB RAM is sufficient, but not optimal in most cases, Infact we ran on 1GB RAM and 1 core cpu as well. But everything have its own cons and pros.. The thread opener mentioned that he is not an expert or system admin from his post, I assume for newbies who do not know where to tweak, my suggested configuration will be much better.
For an expert like you and me, we can tweak minimal resources to maximum output as well, but we have to think from customer who does not know anything about system administration.
You can look CPanel documentation here:
https://documentation.cpanel.net/di...Guide-SystemRequirements-Hardwarerequirements
For CentOS, CloudLinux, or RHEL 7, Minimum Recommended RAM is 2 GB 64 bit architecture.
We should also remember that newbies use web based cpanel or os updates which run in browser via whm. And WHM clearly states that if the amount of ram is not sufficient during upgrade script execution, the upgrade will break in middle or it may not complete the build process correctly.
I kept all this in mind and suggested above configuration to OP. Hope this clarifies you, Thank you.