| Completely agree on everything. That's the reason we didn't review laptop CPUs when I reviewed CPUs. You can get exact CPU power draw on a desktop motherboard (by using an amp clamp on the P8 connector) but it's hard (or not possible) to do that across multiple laptop chassis. Removing battery (when possible) is not a solution either as what you get may differ a lot from classic "plugged in" usage (see the references to the MacBook Pro and Dell that used an i9 that still drained the battery when plugged in, because they can use more power than the power adapter brings). On top of that, way too much depends on the OEM design and the performance of a given CPU will greatly vary from one chassis to another, because of the various throttling mechanism and the various configurable things that OEM can do (it's not just the cTDP, you can as an OEM play with various turbo times, another person mentionned P2 states, which is one of those). So a given mobile CPU performance means nothing at the end of the day, only the laptop "as a whole" can be measured, which is why you don't see good quality benchmarks of mobile CPUs. Anyway, just a small complement : > laptops / cores have an "amp-counter" on board somewhere Intel (and AMD to some measure) CPUs all have various sensors on chip that gives you the power consumption in watts (or amps, depending). They can be read with software such as hwinfo [1]. Those are usually not incredibly reliable though, they are not calibrated per CPU and it's very much a guestimate that could easily be in some cases +/- 5W off. So sadly, not usable either (especially on mobile). [1] : https://www.hwinfo.com/ |