Remix OS 3.0, Will give new life to your old PC while it is clear that you can use USB 2.0 flash media to install remix os, but things are a little different then and now. Although you can download and install remix os (formally an android operating system) you simply won’t get any operating system update. This means no android version other than marshmallow, no security patches; as the project got discontinued last year.
Version 3 is capable of running on both 32bit and 64-bit machines allowing more computers to use the Android operating system.
When the company made a statement earlier about rolling out (12th January 16). The Internet went crazy about it and some folks even ended up installing leaked Remix OS build.
Remix OS is not the only (Android) Operating system which you can install on your computer, learn more other operating systems that are free, and some are open sources. If you have a way older PC that having troubles with newer Windows you may want to seek for some lightweight alternatives.
Check Remix OS installation guides.
Download Remix OS 3.0
Remix OS 3.0 for PC 64-bit Download Links
Download Remix OS 64-bit
[Guide] Installing Remix OS 64-bit Dual boot with Windows, USB boot.
Remix OS 3.0 for PC 32-bit Download Links
[Guide] Installing Remix OS 32-bit Dual boot with Windows, USB boot.
All download links are taken from the official site and mirror links.