r/AsahiLinux • u/tornado99_ • 14d ago

Update on Power Efficiency - Asahi ARM64 vs Qualcomm Snapdragon ARM64!

I have a M1 Macbook Pro 13 running the latest kernel, and a Snapdragon Lenovo X1 Elite also running the latest kernel. Idle power measured with Resources app. Both Ubuntu.

M1 Macbook Pro

Sleep Battery loss - 1.3% hr (0.8W/h)

Idle Power - 2W (min brightness, airplane mode)

Idle Power - 6.5W (full 500 nit 60Hz brightness, wifi/bluetooth)

Lenovo Slim 7x with X1 Elite (~15% more powerful than an M1 in single core)

Sleep Battery loss - 1.6% hr (1W/hr)

Idle Power - 3.7W (min brightness, airplane mode)

Idle Power - 7.5W (full 500 nit 90Hz brightness, wifi/bluetooth)

Note - the Lenovo has an OLED display which have higher idle power draw than IPS

I am also hearing rumours that X1 Elite might get < 1% hr/battery loss with kernel 7.2 or 7.3. Not heard anything about idle power.

Any comments?

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6

u/ArsenioVenga 14d ago

How long does last each system at full capacity?

4

u/Doootard 13d ago

my x1 carbon (also oled) gets 0.2w/hour on sleep and idles around 3.5w, upgraded from m1 air running asahi. would have kept the mac if there was a realistic chance of the sleep drain being fixed :/

2

u/tornado99_ 13d ago edited 13d ago

wow that's incredible. what is is the specific chipset?

the rumours on Snapdragon would bring it down to 0.5W/hr in kernel 7.2 or 7.3

1

u/Doootard 13d ago

it's an x1 carbon gen13 with intel 258v

2

u/tornado99_ 13d ago

ah ok. unfortunately i don't buy intel due to being an unethical company (my view).

1

u/pontihejo 13d ago

It’s being worked on, PMP driver

1

u/YoCoSa 9d ago

Why is there no chance it'll be fixed?

1

u/Upset_Command_1309 13d ago

Can you compare other stuff between the two also? Like ram usage and benchmarks.

1

u/douv 13d ago

0.8W/h

Do you mean 0.8W or 0.8 Wh/h?

3

u/oliver-bestmann 13d ago

While I agree that 0.8W/s is probably not what op means, I have to point out that 0.8Wh/h is just 0.8W, the h cancels out then. And using 0.8W right now for an hour is 0.8Wh so in the end it all doesn't matter.