Basic question about ram speed and overclock

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Hi! I'd like to know, in your experience, if a ram at xxx mhz tested with 8 hours in memetest86 test 5, 2 hours test 8 and a couple of goldmemory complete test can maintain EACH of its settings when you push the cpu in overclock. For example, if the ram tested in a non overclocked environment (no divisor, cpu at stock speed and voltage with lower multiplier) has tref 3120, trc 7, bypass max 7x, when I push the cpu in overclock and divider become 166, the tref stays at 3120, trc at 7 and bypass at 7x and so the others memory settings that were stable before? Which settings need to be changed when the htt going up (if any)? Thanks!