Larian Studios Forums Divinity - Original Sin Divinity - Original Sin - General So how does Constitution/Vitality work?

I assumed that each point of Constitution increased HP by a specific amount (eg, 100). Is that not the case?

Edit: doing some tests
On HARD difficulty, at level 21 (no picture of health, Glass Cannon, etc)
7 Con = 599 HP
8 Con = 690 HP (+91)
9 Con = 786 HP (+96)
10 Con = 890 HP (+104)
11 Con = 1001 HP (+111)
12 Con = 1119 HP (+118)
When you adjust for the -25% hp from hard, the gains are
7 Con = 798.66 HP
8 Con = 920 HP (+121.33)
9 Con = 1048 HP (+128)
10 Con = 1186.66 HP (+138.66)
11 Con = 1334.66 HP (+148)
12 Con = 1492 HP (+157.33)
Meaning that the differences between points of vitality are
6.66
10.66
9.33
9.33
I'm assuming that the up and down is the result of rounding. The average difference is 9 (8.995).
Meaning that the formula COULD be
Each point of Constitution is worth apprx 50 Vitality + (level of new Con * 9)

So your 1st point of Con should be worth +59 vit, your 6th point of Con should be worth +104 vitality, your 10th should be worth +149 vitality, and your 15th should be worth +185 vitality.

Starting with 200 vitality at Con 0 and proceeding along that sequence seems to yield more or less correct values (802 HP at 7 Con, versus the observed 798.66 Con at 7)

Edit2:
@eskuche I forgot to factor in increases from level. I should clarify that at level 21 (and only at level 21), the formula I posted seems generally correct.