Neee help with this computer I just ordered? Thank you?

Price $1200 open box. Ok I’m wondering it I should change motherboard (h310) which is very cheap or power supply (600w 80+ gold)
Gpu is fine Zotac rtx 2080 and cpu i7-8700 which is only at 3.2 MHz also do you think it’s worth overclocking it since it’s low MHz thanks
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