Is your 8gb part of a kit or just another stick of ram?
Even so, chances are wont affect CPU oc stability. You might wanna run some prime blending to make sure everything is smooth though.
I dabble into ram overclocking (because i can) and unstable ram presents somewhat different to unstable CPU overclocks.
I notice, in prime blend, instead of bsods, I get core crashes. And games gets ctds. If your ram is really really unstable, you wont even POST; or you might get a CPU overclock failure notice on bootup.