I recently got a chance to use a 1005g1 (lower end i3 of Icelake family) and was quite surprised. I had it in my hands a bit more than a week before we had to send it back due to issues (SSD "died" and resurrected 3 times in 10 days, was definitely faulty).

Felt definitely faster than the 7200u I keep using, though I didn't get much of a chance to benchmark both. I also noticed that, despite having a much weaker battery (some 36W/hr mess), it managed to pull 6hs on a single charge, on merit of dropping to 1.2Ghz as fast as it could (though it quickly climbed to 3.4Ghz if required).