I've been trying to tighten the timings on my Samsung 30nm memory and noticed that I can set the tRAS timing as low as 12 without so much as an error in MemTest. I currently have it at 2133MHz 9-10-10-12-1T @ 1.5V. What I'm wondering is whether or not there are any benefits to having the tRAS timing so low. I've been reading conflicting answers, with some websites saying the tRAS timing should be close to the sum of the first 3 timings, and others saying that lower is better, period. Thoughts?