Summarizing a bunch of end game gear, heres how benefits translate into stats. (im converting property dmg into matk to simplify things, but it really is a little different because of elemental resistanc instead of Mdef e and multi hits)
- 2*Wizard Bracelets ~ 32 EINT for 1.7M
- Animus ~ 43 EINT for 5~8M
- 3*Headgear with > 40 Matk ~ 60 EINT
- +7 Circle rod ~ 182 EINT + 8 CON
- +7 Lolopanther rod ~ 270 EINT
- Arde/Karacha Dagger: ~ 76 EINT
- Venom ~ 89 EINT + 14 CON (it does a lot less damage on Plate Armor tho)
- +7 Lolopanther staff ~ 313 EINT + 11 CON
- 2*Lvl 6 Blue Gem ~ 25 EINT
Where EINT stands for Effective INT, its somewhat what compares to 1 distributable stat point in INT at high levels (e.g. 1 EINT ~= 2matk). Is this somewhat correct?
If it is, then the maximum realistic from gear (no lolopanther) value would be 32 + 43 + 60 + 182 + 89 + 50 (4 blue gems) = 456 EINT
At lvl 280 with 30 bonus points, to get to 15k HP (61 invested CON points, totallizing 100 CON with Circle/Venom) gives you 248 EINT points to spare in comparison. Or if you get Virtov Plate set (which drops from dungeon lvl 240, and adds ~3.8k HP) you can get to 15k HP with only 13 points invested in CON (totalling 42 CON with Circle Rod/Venom), leaving you with 296 EINT.