I have a 5525-X Running in production and I have a couple clarification questions:
1.) Quad Core: Only ever see a single core with load
2.) Memory: Shows 8GB but only shows 4GB (I can only assume that 4GB is used as system member and the other half ram drive maybe?)
In the ASA 5525-X, the memory is divided between your ASA and IPS, as are all the other resources.
ASA and IPS share system resources such as CPU, RAM, and Flash, CPU and RAM are
statically allocated and are not configurable There are totally 4 CPU cores, where 1 CPU core is statically allocated to ASA software
module, while 3 CPU cores are statically allocated to IPS software module There is 8GB of RAM memory, 4GB are statically allocated to ASA and 4GB are statically
allocated to IPS.
If you enable the IPS license, you would see the memory and RAM allocated to the IPS as well.
An output of "show version" would also tell you that the ASA is allocated 1 CPU core.