there is no strait answer to this.
It depends on your role, build, race, preferred weapon, defensive skills, spell and weapon resistance, armor, etc.
I guess you are asking this cause you think you have too much or too less. too much will cause your dps to be too low. too low will cause you die too often.
I recommend you be more clear bout your issue (not enough dps or dying too much) and also share your build (weapons used, armor, skills, race, passives, mundus effect, chosen champion points, food, vampirism/werewolf.
That way we (im not that good but others here are much better) can look at it and tell you in more detail what to change to overcome the issues you might have.
Through me you pass into the city of woe:
Through me you pass into eternal pain:
Through me among the people lost for aye.
For a depends question like that, as Ranique has said, we need more information.
Personally at V12 I did not care, I was targeting V14 before I considered my stat needs
Everyone knows the phenomenon of trying to hold your breath underwater - how at first it's alright and you can handle it, and then as it gets closer and closer to the time when you must breathe, how urgent the need becomes, the lust and the hunger to breathe. And then the panic sets in when you begin to think that you won't be able to breathe - and finally, when you take in air and the anxiety subsides...that's what it's like to be a vampire and need blood.
Francis Ford Coppola - BS Dracula: The Film and the Legend