Full value of 5, I believe, so hopefully not a game-breaker for your ending of choice. Having said that, you don't want to disappoint Conrad do you? He's your biggest fan.
Him dying on my Paragade doesnt bug me that much. After the Illium run-in, my Shep starts treating him like the idiot troll wannabe he is.
As for his 5 point asset, its mostly for the sake of collection. I can get almost 8k playing through naturally now with my imported N7's
Here: Land on the planet that has 3 writings (they are all at the same place, very close), and the rest you just collect in orbit. http://masseffect.wi..._Asari_Writings
You just need this and the elkos license to have conrad alive and also use his data. And also complete the side mission on feros in which the guy asks you to retrieve some of his data from the exogeni building. And have solved the problem with the citadel waitress and her sister. I´m telling you, it takes less than 15 minutes and you´re good to go.
From what I understand about Conrad, not that I've done it for myself, you have to do the quest for Hossle on Feros and the quest for Rita's sister on the Citadel to keep him alive. Never seen that particular scene so I dunno how all those connect together.