Symantec Endpoint Protection (SEP) 14.3 RU6 introduced a significant change by dropping support for 32-bit Windows operating systems
This is the most resource-intensive component. symantec endpoint protection 143 ru6 system requirements top
For :
Most "slow SEPM" complaints trace back to database bottlenecks. For RU6, do not ignore this. Symantec Endpoint Protection (SEP) 14
A minimum of 1 GB of RAM was needed, though 2 GB made the guardian much more alert. SEP 12
To narrow down exactly what you need for your rollout, are you planning a brand new of the management server or strictly upgrading existing clients ? System Requirements for Symantec Endpoint Security