Based on the specifications provided in the link you shared, the PC build seems to be a good choice for multimedia editing and gaming. Here are some points to consider:
1. Processor (CPU): The Intel Core i5-9400F is a decent mid-range processor that should handle multimedia editing tasks well. However, for more demanding editing tasks, a higher-end CPU like an Intel Core i7 or AMD Ryzen 7 would be more suitable.
2. Graphics Card (GPU): The NVIDIA GTX 1660 Super is a good mid-range GPU that can handle gaming at 1080p resolution with decent frame rates. It should also help in accelerating tasks in multimedia editing software that support GPU acceleration.
3. RAM: 16GB of RAM is a good amount for multitasking and handling multimedia editing software. However, for more intensive editing tasks, consider upgrading to 32GB for smoother performance.
4. Storage: The 240GB SSD and 1TB HDD combination provides a good balance between speed and storage capacity. Consider adding more SSD storage if you work with large multimedia files frequently.
5. Overall Value: The build seems reasonably priced for the components included. It should be able to handle multimedia editing tasks and provide a decent gaming experience at 1080p resolution.
In conclusion, the PC build you shared should be able to handle multimedia editing and gaming tasks, but for more demanding workloads in multimedia editing, consider upgrading the CPU and RAM for better performance.