from what I remember reading it varies from around negligible-20%, with the vast majority of stuff on the lower end. 5700u has more GPU cores and clock, but the reality is IGP are most limited memory bandwidth.
Don't quote me, but I am pretty sure that is correct. Minimal difference.
5300U/5500U/5700U are Zen2, but are refreshed with SMT enabled (hyperthreading) and 1 additional gpu core over their respective older sku 4300u/4500u/4700u. Performance will be very similar unless the software in question can make use of SMT.
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