3 Things to Know About RAM for VMs: More Beats ECC

More RAM helps VMs more than ECC does Going from 16GB to 32GB gives a bigger performance boost than switching to ECC memory, because extra capacity prevents VM starvation and swapping.

ECC corrects errors but doesn’t speed things up ECC memory fixes single-bit errors for stability, especially in 24/7 VMs, but adds a tiny latency overhead you won’t notice.

Doubling RAM stops VMs from gasping With 16GB, you likely overcommitted memory and hit swap. Adding 16GB lets you allocate more to each VM or run more VMs without disk thrashing.