I spent $35 to setup this mini-CPU/GPU/RAM-monitoring display. : r/buildapc
Computer Temp Monitor, 5 Inch IPS Screen Theme Monitor, USB Connection PC CPU Data Monitor Display CPU, GPU, RAM Usage Rate and Temperature Mini Secondary Screen for Win System Only : Amazon.co.uk:
Windows Desktop Gadgets - All CPU Meter Version 4.7.3
Portable Monitor, 3.5in Show CPU GPU RAM Usage Horizontal Vertical Screen Switching 360 Degrees Rotate IPS Screen Stepless Brightness Adjustment USB Mini Screen for Host Temperature Monitoring : Amazon.co.uk: Computers & Accessories
3.5in IPS USB Mini Screen PC Sensor, CPU, GPU, RAM Usage Temperature Monitor Panel Display, Host Extended Display, 360° Rotation, for Windows PC : Amazon.co.uk: Computers & Accessories
Amazon.com: PC CPU Data Monitor, 5in IPS USB Mini Screen Computer Sensor Panel Display Temperature Monitor for AIDA64 PC CPU RAM Data Monitor, Only Support for Windows System : Electronics
Windows 10 Insider Build: "Can now monitor your game's framerate (FPS), CPU usage, GPU VRAM usage, and system RAM usage from the game bar (Insider Build 17692)" : r/pcmasterrace
How to display CPU, GPU and RAM usage natively on Windows 11 - gHacks Tech News