optimum timing

[automaton]

TW3X4G1333C9 timing 9-9-9-24 1t

running at stock would other timing be beneficial?

[ghost_florian]

You won't get much of a real-world benefit from tighter timings. If you want to do it, start with an 8-9-9-24 @ 1.6V, run prime95 blend for 30 minutes, then work your way down. I don't know if you can get CAS7 with those modules...