* [[MegaFlash|MegaFlash]] (Bryce)
* [[Multi_Cartridge|Multi-Cartridge]] (Bryce)
* [[Multi_Cartridge_8_ROMs|Multi-Cartridge - up to 1MB / 8 ROMs]] (eto)
* [[Old School 512K RAM Expansion]] (Revaldinho) - 512K RAM expansion built with an SRAM and 74 Series standard logic
* [[Amstrad ROM Expander|Practical Electronics ROMBoard Project]] (Simon Dean)
* [[Y-MEM]] ([[TotO]])
* [[128k on GX-4000]] ([[User:Rewk]])
* [[CPC 6320 - internal 320K for CPC 6128]] - 320 or 512K internal RAM, requires soldering - (eto)
* [[ULIfAC]] (512kB Ram/32XROM Board/256K Ram+16X Rom board (ikonsgr)
* [[CPC iRAM|CPC iRAM - internal DIY Plug'n Play RAM expansion]] (eto)
=== Sound ===