PowerCore7
Judging by the craiglist watermark on the bottom right, it’s probably just a meme listing.
Xournal++ supports other architectures. They might not have compiled binaries for other architectures ready to be downloaded on their GitHub release, but it’s packaged on at least postmarketOS (i.e. Alpine Linux) edge (I have it on my “Chromebook”) and Debian Stable.
I have a Samsung Chromebook that also has ARM SoC, 4 GB of soldered RAM and eMMC storage. I installed postmarketOS on it, with desktop KDE Plasma 6, and with 4 GB of ZRAM, it is definitely usable - I could run Xournal++ without much problem. It’s not butter smooth, the scrolling can be stuttery, but it should be enough for light notetaking. Granted, my SoC is older and weaker (RK3399), so your mileage may vary.
Translation:
今天我们吃鸡腿 - We are eating drumsticks (“The Future”) today
dog furiously eats broccoli (Wayland icon)
等下 - Wait a minute
味不对劲啊 - That doesn’t taste right
你是不是又坑我了 - You are not tricking me, are you?
我看看 - Let me see
我就知道吗 - I knew it! (ノ´・ω・)ノ ミ ┻━┻
你是真狗啊 - You are the real dog You are such a dog
Not Samsung, but I do have a Redmi 2 (also MSM8916) since I can get one for roughly $10.
On paper, the performance is closer to PinePhone (not Pro), and it would definitely be a lot less powerful than a PinePhone Pro running RK3399(S). They also typical has only 2 GB of RAM (some have even less), and that’s definitely going to be noticable. It should be fine for light use and thinkering though.
Some Samsung phones might have networking issues, and some might not even be unlockable, but I’m not really sure about it either, so definitely check before buying.
Also, not all MSM8916 is built the same - some works better than the other. Devices from the community category should be somewhat usable, but be ware of those in the testing category, since they might have major functionalities missing (e.g. touch).