Time Waster
Veteran
Trouble is "core i5" etc doesn't mean that much because Intel have had the i3, i5, i7, i9 designations for many chip generations. They just use them to differentiate the levels within each generation. A gen 7 Core i5-7200U (with 4 cores from 2017) is going to be a lot slower than a 14th gen Core i5-14500T from 2024 with 14 cores!
Also, u at the end denotes energy efficiency in the chip at the expense of performance. A H at the end denotes a chip optimised for power or performance. HX is even more performance. I've seen a 13th gen i5 with H at the end that is significantly faster in benchmark scores than a 12th gen i7 with U at the end.
I've seen similar effects with u vs h in i7 and i5 respectively at the same generation too. I think the effect is bigger with generation number but still noticeable with the U vs H effect.