Which PC component should I upgrade first for smoother gaming?

Nothing here is completely useless, but the system is entry-level across the board. A full rebuild gives the best long-term result, though it isn’t necessary if your budget is limited. A better graphics card now, followed by a platform upgrade later, is the practical path. The 500W power supply may also limit which graphics cards are suitable, so check the recommended wattage and power connectors before buying.

The graphics card is the clearest first upgrade. The GTX 1650 is likely the main limitation in modern shooters, while the i3-10100F can still handle many games reasonably well. Check your power supply and prices before choosing a replacement, but moving to a stronger used or current-generation GPU should provide the biggest improvement in frame rates.

First confirm whether you actually have 8GB or 16GB of RAM. The listed two 8GB sticks suggest 16GB total, which is fine for most games, but 8GB can definitely cause stuttering and excessive loading. If it is only 8GB, upgrade to 16GB in a dual-channel kit before anything else. If you already have 16GB, prioritize the GPU.

Your upgrade choice should start with a budget and the exact games you want to play. For single-player shooters, a GPU upgrade alone may be enough. For competitive online games, the CPU can also matter, especially if you want high refresh rates. I wouldn’t spend much upgrading the existing 10th-generation platform; save for a newer CPU, motherboard, and memory if you’re planning a larger rebuild.