memory - What will happen if I add 2GB more RAM with 4GB in Windows 7 32-bit OS? - Super User
Tip of the Week: 1GB, 2GB, 4GB or More - How Much RAM Do You Actually Need? - K² Technologies Blog | Gillette, WY | K² Technologies
AliExpress
RAM Matters: How Much Do You Need for Gaming? 4GB, 8GB, 16GB or 32GB > The Benchmarks & Putting It All Together | TechSpot
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 :
Raspberry Pi 4 B: How Much RAM Do You Really Need? | Tom's Hardware
Raspberry Pi 4 Model B 2GB 4GB 8GB RAM – Sunhokey Electronics Co., Ltd
Does 64 bit Windows 7 use only up to 4 GB of RAM? What happens with the remaining 2 GB in a 6 GB RAM system? - Quora