FBX will run on a wide range of hardware, both new and old. However, the exact requirements to get optimal record performance will vary from game to game because some games will put more stress on your PC than others.
For example, the hardware required to record Minecraft will be lower than the hardware required to record Apex Legends at the same frame rate.
TIP When using older or lower-spec hardware, it is unlikely to be able to record the latest games at high frames or resolutions and trying to do so can harm performance. Reducing the Video settings is advisable in these cases.