Is it safe to use Macbook vertically?

The pressure between the heatsink and CPU along with the extremely high surface tension of liquid metal will keep the liquid metal in place. PC owners have been using liquid metal on CPU's in vertical tower cases for years.

Sudden shocks like those which occur when dropping or hitting your laptop could momentarily break the surface tension and loosen the pressure between the heatsink and the CPU die which may cause a leak. So long as you don't regularly drop or hit your MacBook you should be fine.

I haven't heard of any Macs using liquid metal thermal compound. Do you have a link?

If the computer is using liquid metal thermal compound, then I would always keep the laptop (or any computer) completely flat or you will risk that liquid metal compound seeping out. I find it hard to believe Apple would use liquid metal since laptops are carried around which places them in every conceivable angle. Especially since the ARM CPU (aka Apple Silicon CPU) runs so much cooler than any Intel CPU and Apple only ever used standard thermal compound (non-metallic) on the Intel models.

Because they won't ship for another two das, I think that is a question for Apple and they will not see your question in this user-to-user forum setting.

My concern with any Macbook Pro in clamshell mode is cooling. All Macbook Pros exhaust heated air through the hinge area. IF you put the computer vertically and the hinge is down, the exhaust vent are blocked. And some Macbook Pros have to breathe in cold air through the keyboard. This is very common in 13-inch models.

If the image on Apple Macbook Pro 14" page is correct, your 14" model has dedicated air intakes like the older 15-inch models on each side where the bottom cover meets the chassis:

IMHO any Macbook Pro that is clamshelled vertically should have the hinge (spine) UP.

Hi,

I think it doesn't hurt anything when you operate your MacBook Pro/Air with vertical stand which is available at Amazon and online and retail AppleStore.

I use a TwelveSouth BookArc vertical stand with a Macbook Pro 2015 (Intel), Monterey 12.7.2 and one (or two) external Dell 4K (display port) monitors.

On warm/humid days (26C/80F), if I place the spine of the MBP in the base of the stand/cradle, the Mac will start to overheat and self-throttle, with the fans running at 5500/6000 rpm.

(Running Chrome, Productivity and Development tooling across multiple tabs/desktops).

Placing the spine at the top, away from the cradle, helps as does ample, fresh airflow.

NB: I'm due to change the 7-8y.o. CPU/GPU heatsink paste soon, when I replace the battery, which should help.

PS: For system metrics, see the handy Ruby gem, istats: https://github.com/Chris911/iStats