128MB: Sufficient for all cores, including all Neo-Geo games
Refunds will be issued per the customer’s request at any time and for any reason.
- All SDRAM sold will pass at least 130 MHz (Archie is the fastest core at 126 MHz), but most pass at 140MHz
- See here for memory requirements by core
- See the guide
- SDRAM portion of video starts at 1:04
See here for general MiSTer SDRAM info