u/Kuchucopter

So let's say I make a Fighter with 18 Con.

1 - I level my Fighter to lvl5. I get the constitution tome and use it to get my con to 19.

2 - I earn enough xp to get to level 5 but I keep my character at lvl1. I get the constitution tome, use it to get to 19 Con. Then I level up to level 5.

Max hitpoints on leveling option is selected for both scenarios.

Would I receive more hitpoints from the 2nd scenario or would my hitpoints end up the same?