The Redmi 9 will have up to 6GB of RAM on its Chinese debut: new leak - NotebookCheck.net News
Xiaomi Redmi Note 9 - Full phone specifications
Amazon.com: Xiaomi Redmi 9 64GB, 4GB RAM, 6.53" Full HD + AI Quad Camera, LTE Factory Unlocked Smartphone - International Version (Carbon Grey) : Cell Phones & Accessories
Xiaomi Redmi Note 9 Pro 128GB+6GB RAM- GSM, International Version(Open Box)
Xiaomi Redmi Note 9 Pro 128GB + 6GB RAM, 6.67" FHD+ DotDisplay, 64MP AI Quad Cam | eBay
Xiaomi Redmi Note 9 PRO 128GB 6GB RAM Factory Unlocked (GSM Only | No CDMA - not Compatible with Verizon/Sprint) International Version - Interstellar Gray