IBM PS/1 Vintage Computer 486SX 25MHz 1664KB RAM No HDD 2133-M40 | eBay
PJRC Store
Use PSRAM – uPesy
6MB Apple PowerBook 100 PurpleRAM newly made RAM memory module PSRAM | eBay
Greg on Twitter: "Soldered up a quick board to test these Chinese PSRAM ICs. 64Mbit of PSRAM (DRAM with internal self-refresh) in a QSPI/SPI SO8 package! https://t.co/hQ3ZfyUX0U" / Twitter
16 MB FPM-RAM 72-pin PS/2 Memory 'Kingston KTC-PNP/16' for Compaq Pre