DDR4-2400 CL15 vs DDR4-2666 CL19: Lower latency beats higher frequency in real use

The 2400 CL15 kit is actually faster despite the lower frequency — its true latency is 12.5 nanoseconds vs 14.25 for the 2666 CL19. Doubling capacity from 8GB to 16GB is a massive win for multitasking. Just don’t mix the kits, or you’ll lose the latency advantage.