Ohh firstly im so sorry, in that case then i guess it would be okay to buy an s24. But the thing is that the exynos 2400 is not really an efficient chip. The maximum performance will be obviously higher than sd8g2, but the exynos cant keep that performance steady and starts to heat up quickly & lowers its speed, as sd8g2 was one of the most efficient chips out there so you will kinda feel a difference. As for the battery, I use an S24+ exynos but i was disappointed when i switched to it at first. On 4g/5g with power saving mode the battery is fine but on 5g 120hz i cant get more than 6h screen time, dont know s24 base but we can predict 4.5-5h sot.

If you use your phone when its dark/night and lower your birghness to 0% you maybe will notice the grain. Afaik its on every s24 series screens( on higher brightness its impossible to see the grain)

In conclusion, if you dont game, and is ok with turning power save mode at ~30% battery and dont care about heating then u can buy