5 Reasons 16GB of RAM Is the Right Amount for Your Homelab

16GB supports three lightweight VMs comfortably Three lightweight VMs will run happily on 16GB with headroom for host overhead like vCenter and ESXi.

8GB forces you to rely on ballooning Ballooning is a last-resort mechanism that makes VMs feel sluggish when the hypervisor reclaims memory. It works, but it’s not something you want to depend on.

Ballooning causes random slowdowns If any VM actually needs the RAM, ballooning kicks in and performance suffers. The time spent debugging these issues isn’t worth the small savings.

16GB memory is cheap Used DDR4 or DDR3 sticks cost under $50. The $20 you save by going with 8GB isn’t worth the headaches.

You can focus on learning instead of tuning Set your reservations smartly with 16GB and move on to actually playing with VMware features.