You wrote it as an "pick memory utilization or CPU utilization", stating memory as being practically free. I just wanted to correct that by saying that its utilization is very expensive for the CPU.

Rather the trade off you're thinking of is "caching vs. realtime computation" rather than just "memory vs. cpu". Outside caching, it's pretty universal that more memory utilization just means poorer performance, both in wallclock time and in CPU utilization.