I love my system but no way an i5 3570(not even 3570K) is beefy. :eek: Also you can count SSD as an extra, it mostly boosts up start up, save, load times.
When you build lights it’s the CPU that counts and the more threads you have the better. I’ve just built lights in Realistic Rendering project in high quality for you and it took exactly 5 minutes. And whenever the engine needs to compile 3k shaders for whatever reason it takes about 3-4 minutes, which also uses the CPU.