AMD is already significantly faster than M series, and has been so for a long time. Efficiency is the only place Apple still has an advantage
https://www.tomshardware.com/pc-components/cpus/apple-m3-cpu...
Single core performance is only useful for artificial benchmarks. And even there Apples lead is less than 2%.
That is nonsense that none of the CPU competitors would agree with. In most applications single core performance matters very much. Not every algorithm can be multi threaded and there is an unavoidable overhead with those that can be multi threaded. Only some parts of some applications can be multi threaded.
For example, a 20 core 500 MHz CPU is much less capable and responsive for real world usage than a 5 core 2 GHz CPU, despite having the same instruction count per cycle.
A 100 core 100 Mhz CPU would take forever to boot up and feel unusably slow.
check e.g those
https://www.cpubenchmark.net/laptop.html
AMD and Intel beat Apple hard in perf and price benchmarks.
So far it is looking OK. In single core, it handily beats a 7900X3D at a fraction of the power draw.
For 1) my fastest iron is i9-13700KS and Apple M2. They are very close. My Zen 3 is great and is notably more power efficient, but I'll evaluate 14700KS-Zen 5-M3 when possible.
ADD: because of winter I'm loving my i9-13700KS (not kidding, my office would be freezing without it), but come summer I'll care about efficiency.
As far as I can tell, it is not enabling LCD panel self-refresh. This may be where the extra idle power is going with screen on? If you think about it, it's a pretty expensive behavior to constantly read framebuffer content out of system RAM at 60 Hz.
Need to purchase a new business laptop soon
I highly recommend going through some youtube battery life videos and looking up notebook check reviews for whatever you're planning to buy/compare.
This is with a 14nm chip, one would think the newer systems could hopefully do at least this well.
Btw as someone with a skylake laptop that also used to sip power, I suspect there's been a mild across the board power increase especially as newer chips clock much higher. My ryzen 7 iirc goes till 5.1ghz and is noticeably faster (i'm at 392 tabs in edge right now) than my skylake. I suspect your older laptop wouldn't clock so high, and a 3ghz limited intel/amd would have great battery.
Depending on what you're doing, modern AMD chips are very close to M series chips under load (specifically efficiency). The biggest issue is idle power is still higher. My amd framework (7840u) takes between 5-10watts idle unless I use something like the xtu tuner.