Hacker News new | ask | show | jobs
by saagarjha 2040 days ago
> The early tests show about 10-12h, which is the same as my (and many other) laptops under regular usage.

Yeah, laptops that look like bricks.

> Can you tell me what "unified memory" even is exactly?

GPU shares memory with the AP

> Is it LPDDR4 on a pop package

On SoC, no PoP

> I'm limited 16GB of memory

Wait for new hardware

> which I regularly go over - I am using 19GB of RAM right now just with browser tabs open

This isn’t how memory works :/
1 comments
lhl 2039 days ago
> Yeah, laptops that look like bricks.

Eh, the laptop I'm using at the moment has a 15.6" display and 91Wh battery and is less than 100g heavier and about 1mm thicker than the 13" MBP. It's also 500g lighter than the 16" MBP. Lots of other properly tuned modern x86 laptops can perform similarly. For example the 14" 1.48kg 18mm 56Wh battery HP EliteBook 845 G7 manages >12h on NBC's wifi websurfing test: https://www.notebookcheck.net/HP-EliteBook-845-G7-review-AMD...

> This isn’t how memory works :/

Fair point that free might not be the best way to measure things, I have more tabs open now but still not doing work (obviously), so let's compare:

                total        used        free      shared  buff/cache   available
  Mem:       65328424    26679236    31393956     1165140     7255232    36284812
  Swap:      67108860     3197072    63911788
With totaling per-process shared/private memory (I uses memstat.sh for this). And the total I get is: 18.37 GiB - lower, but actually not so far off.

This is only with a two browsers (a few hundred tabs) and some resident electron apps open, mind you. Before upgrading (w/ 16GB memory) I was often hitting swap, and now I'm not. But if you don't ever need >16GB of RAM, lucky for you I guess.

link