Separate low performance from faults
Low frame rates, stutter, visual artifacts, unexpected crashes and a game's unsupported-hardware warning need investigation. They are not five proofs that a replacement graphics card is required.
Compare a repeatable scene
Record resolution, settings, frame rate and frame-time behaviour. Try a lower graphics load and review processor and GPU activity together. Total CPU usage can hide one busy core; a single utilisation percentage is not a complete diagnosis.
Check drivers, power and cooling
Use official driver guidance and note changes before the fault began. Confirm temperatures and power requirements against component documentation. Do not run stress tests on a system with electrical smells or unstable power.
Choose a compatible upgrade
Check dimensions, connectors, power supply and monitor needs. Compare evidence for your games, including settings and resolution. A larger price or benchmark number does not guarantee a proportionate improvement in your current system.
Questions about this guide
How do I separate a graphics limitation from another problem?
Compare the same game at lower resolution and settings, while noting frame rate and component use. Stuttering alone can also involve memory, storage, temperatures or software.
What must be checked before fitting a bigger graphics card?
Check case clearance, power-supply capacity and connectors, motherboard compatibility and ventilation. A card fitting the slot does not prove the whole system can support it.