* [[Gemini]] (Shinra - PulkoTronics) - compatible with standard 512 Kbyte expansion (plus extra extended-standard 512 Kbyte), also handles special case for Amstrad Plus ASIC
* [[Y-MEM]]
* [[RAM7 2MB memory expansion]] ([[RAM7]]) - compatible with standard 512 Kbyte expansion (plus extra extended-standard 1.5 MBbyte)
* [[CPC4MB]] ([[Yarek]]) (DIY) - compatible with standard 512 Kbyte expansion (plus extra extended-standard 3.5 MBbyte)
* [[Otten & Fecht 1 MB RAM-Disc]] - Accessed through I/O ports (RAM is not mapped to memory)
* [[Vortex Expansions RAM card]] - an older expansion, uses 32K-banks, not compatible with the later standard
* [[Nova]] - Non-volatile 32KB RAM and RTC
== Expansions that are unknown how they work, and if they are standard or not ==