Handheld Gaming PC Glossary
The terms that actually change which handheld you should buy — explained in plain English, with what to look for in a 2026 handheld gaming PC.
- APUThe single chip combining CPU cores and a GPU that powers virtually every handheld gaming PC, most commonly AMD's Ryzen Z-series or Strix Point/Halo.
- FSR (FidelityFX Super Resolution)AMD's upscaling technology that renders games at a lower internal resolution and reconstructs a sharper image, boosting frame rate on handheld APUs.
- Gyro AimingUsing a handheld's built-in motion sensor to fine-tune aim with small wrist movements, layered on top of stick input.
- Hall-Effect SticksAnalog sticks that use magnets instead of physical contacts, so they resist the drift that plagues older sticks.
- OCuLinkA high-bandwidth external PCIe port some handhelds include for connecting a full desktop GPU (an eGPU) at your desk.
- OLED (Handhelds)A self-lit screen technology with perfect blacks and vivid color that also draws less power than LCD at typical handheld brightness levels.
- ProtonValve's compatibility layer that lets Windows games run on Linux-based SteamOS, translating Windows API calls on the fly.
- RDNA (3 / 3.5)AMD's graphics architecture powering the integrated GPU in nearly every modern handheld APU; RDNA 3.5 improves efficiency over RDNA 3 for battery-constrained devices.
- Ryzen AI Max (Strix Halo)AMD's high-end Strix Halo APUs bring a much larger integrated GPU and huge unified memory bandwidth to premium, desktop-class handhelds.
- Ryzen Z1 / Z2 (Extreme)AMD's handheld-specific APU line, built with Valve and Microsoft partners, spanning the budget Z1 up to the flagship Z2 Extreme.
- SteamOSValve's Linux-based, console-like handheld OS built around Steam and Proton, optimized for battery and simplicity.
- SteamOS vs WindowsThe core handheld OS decision: SteamOS trades some game and launcher compatibility for battery life and a cleaner UI; Windows trades those back for universal compatibility.
- TDPThe wattage a handheld feeds its APU; lower TDP stretches battery life, higher TDP unlocks more frames.
- TrackpadsBuilt-in touch surfaces (like on the Steam Deck) that emulate a mouse, useful for strategy games, older PC titles and desktop navigation.
- USB4A fast USB-C standard (up to 40 Gbps) that also carries DisplayPort and, on many handhelds, eGPU traffic and charging.
- VRRA display feature that syncs the screen's refresh rate to the game's frame rate, eliminating tearing and reducing stutter.