Why is Ser8 £170 cheaper than the Ser7? Also, will this be good for heavy data/excel and dota2 on max settings?

Hey all,

I'm looking to get a mini PC due to space issues but would need something that can work well with excel / data / scripting work (not too much tbh) and also some dota2 gaming at high settings and if possible some gaming on newer titles like Cyberpunk.

I have been looking at Beelink and noticed Ser7 is more expensive than Ser8.

Does anyone know which one would be best fit for me and also, why is 8 cheaper than 7?