When comparing Puppy Linux vs Phoenix OS, the Slant community recommends Puppy Linux for most people. In the question“What are the best Linux distros that don't use systemd?” Puppy Linux is ranked 20th while Phoenix OS is ranked 52nd. The most important reason people chose Puppy Linux is:
Puppy Linux requires 128MB of RAM and 333Mhz of CPU, although 256MB of RAM is recommended.
Specs
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Pros
Pro Extremely low minimum system requirements
Puppy Linux requires 128MB of RAM and 333Mhz of CPU, although 256MB of RAM is recommended.
Pro The whole OS runs off of RAM
Since Puppy Linux is completely loaded and run off of RAM instead of HDD, it's read/write speed is not a factor.
Pro Designed to run as a live USB/CD
A portable version, that can be carried on a thumb drive without requiring installation, weighs less than 100MB; a Live CD - less than 150MB. You can even save your settings and files for Puppy on the external device/media.
Running off a live CD also has security benefits, as your system will reset to the known config after each boot.
Pro Different distro based versions available
Puppy Linux offers a few different releases.
The first is an Ubuntu based release called Tahrpup, by using this version the user is able to take advantage of all software and support from Ubuntu.
The second version is called Slacko, which is built upon the Slackware binaries.
The third is called Wary and it is built to support older hardware than the rest.
And the fourth is called Quirky, which is used as a base to explore new ideas.
Pro Linux distro designed for this exact purpose
Pro Offers a long term support release
Puppy Linux offers an LTS release called Precise.
Pro It can be the only distro that works
Sometimes, Puppy Linux is the only distro that works on an old machine: all other distros are more demanding.
Pro JWM used as window manager
JWM is a low resource window manager that is used in most Puppy Linux installs.
Pro Comes with Nougat
Unlike Remix OS, Phoenix OS is recently released and comes with Android 7.0. Remix OS support is discontinued and no further updates can be expected. But Phoenix OS updates can be expected. UI is same for both OS.
Pro Accelerated gaming
With Phoenix OS you guys can play any android games on pc with 30+ fps but minimum requirements must be met (pentium 4 cores with 8 gig ram) [must] and even Intel gfx would also work to run heavy games like mc5 (fps) and kritika (role playing) or pubg(tps) usually puzzle games never lags on this OS
Pro Regularly updated
Phoenix OS updated at least every month, bringing in new features and bug fixes with every release.
Pro For gaming
Cons
Con A bit ugly
Using puppy makes you feel like you just jumped 20 years into the past. Being that the purpose of Puppy Linux is to run or really low resource machines the software used is often on the older side, which is precisely why it has a 20 year old look.
Con Not as light as it used to be
It's light, but not as light as it was 1-2 years ago.
Con Smallest software library ever
You can barely find any precompiled packages for Puppy.
Con No built in compositing
Being a low resource distro there is zero built in compositing for the JWM window manager. Though one can be added through a bit of work.
Con Lots of ads
So many sucky ads for no apparent reason, making it not free at all.
cant even open a FileManager withouth clicking closed ad
Con 32-bit version is no longer supported or updated
The developers of Phoenix OS have dropped support for the 32-bit version of Phoenix OS. It is still on Andriod 5.1 Lollipop and was last updated on 19 October 2017
Con Google Play service is not updating
Don't expect Google services-based apps.
Con It's snappy, in a way
Snappy but not smooth. Snappy when it comes to games. Setting the resolution to 1080 but that doesnt take effect on games which still run on low resolution.