This is simply false. AMD is above and beyond a more efficient chip these days. The Intel parts run warmer and consume more power not to mention slower and more expensive.
AMD embarrasses Intel with Ryzen 7 HP ProBook 455 G7 running 150 percent faster than the more expensive Core i7 ProBook 450 G7
We all know AMD is having a field day against Intel with its latest family of Zen 2 CPUs, but we didn't think it could get this bad.www.notebookcheck.net
Lenovo ThinkPad T14s: AMD Ryzen 7 Pro 4750U leaves Intel in the dust
After the ThinkPad T14s with the Intel Comet Lake processor, we also received the ThinkPad T14s with the AMD RRyzen 7 Pro 4750U processor. Our initial benchmarks show that the AMD CPU is much faster, despite similar power consumption figures.www.notebookcheck.net
Sorry I wasn't clear. I was talking between an i7 and i5, not i5 and AMD.
At around $600 budget, I highly doubt the cooling solution between i5 and i7 versions is any different, so going with a less power hungry CPU makes more sense IMO.
I'm more of a desktop guy and I know the new Ryzens are kicking Intel's butt in pretty much all categories except gaming, but it sounds like they also caught up in the mobile segment.