The Raspberry Pi 4 gets a RAM upgrade: The 2GB version is now $35 | Ars Technica
Raspberry Pi 400 Gets an 8GB Upgrade — By Hand-Balling and Soldering a Donor RAM Chip - Hackster.io
A closer look at Raspberry Pi 4 8GB RAM - NotEnoughTech
Raspberry Pi 4 released! More RAM options, quicker processor. : r/stratux
Increasing Ram on your Raspberry Pi with ZRAM - YouTube
The Raspberry Pi 4 gets more RAM for $35 | TechCrunch
Raspberry Pi 4 (8GB) Tested: Double the RAM, New 64-Bit OS | Tom's Hardware
Raspberry Pi 4 hits stores with faster CPU, 4K video, and RAM options | VentureBeat
Amazon.com: Waveshare Accessory Compatible with Raspberry Pi 4 Model B 2GB RAM with Powerful Processor Faster Networking Support Dual 4K Output and Different Choice of RAM Comes with a Copper Heat Sink :
Increasing RAM Capacity on Raspberry Pi using zRAM. Does It Work? - YouTube
Buy a Raspberry Pi 4 Model B – Raspberry Pi
Raspberry Pi 4 Model B Now Has 8GB of RAM
Raspberry Pi 4 Announced - IGN
The Raspberry Pi 4 gets a RAM upgrade: The 2GB version is now $35 | Ars Technica