Oracle Real Application Clusters [RAC] has excellent scalability on Dell PowerEdge with Intel Xeon hardware.
What happens to the application performance when you add the Oracle Application Tier Database Cache [TimesTen] as a read/write cache to RAC?
Intel Optane Persistent Memory provides cost effective high capacity memory.
What happens to the application performance when you add 3 TB of Optane PMem to TimesTen?
Find the details in this reference architecture guide.
Disclaimer: These are my personal thoughts and do not represent Oracle’s official viewpoint in any way, shape, or form.