Does every point of intelligence matter?

[Lari]

Originally Posted by Metathron

Or is it just every 7 and 15, like it says in the description?

I'm asking because I read a post in which someone claimed that every point of intelligence matters, increasing something or other? I am thinking of whether to equip several early game artifacts that add mana or defense but decrease your intelligence.

Formula for damage for spells says :

intellect's modifier : (1+0.1*int)*(1+0.1*(Int/7 "<- only integer part"))

ie. Int 15 = 2.5*1.2 = 3 (extra turn duration on some spells)
ie. Int 30 = 4*1.4 = 5.6 (2 extra turns duration on some spells)

note: some spells are capped on maximum duration, others do not get a bonus at all. ie. dragon arrow give 1 additional arrow every 15 point, up to 5 arrows. Hypnose duration is 2 rounds no matter what, etc

Total damage will be : base dmg of spell * intellect's modifier * item's modifier<- (sum of items/ability bonuses) ; remember to apply resistance from target

Note: Sacrifice doesn't add the extra 10% per 7 ints ; pain mirror just adds int/2 to %dmg returned.

So, answering your question, no, it isn't just 7 and 15, every point matters, but not all points matter the same
IMO: throw that garbage away as soon as u get something better, or if your strategy is heavily based on spell's dmg.