Good morning! Upgrading from an RX 590 to a GTX 1650 Super would be a decent upgrade in terms of performance. The GTX 1650 Super generally offers better power efficiency and slightly better performance compared to the RX 590. However, the performance gain may not be significant enough to justify the cost of the upgrade, depending on your specific needs and budget.
If you are looking for a noticeable performance boost in gaming or other GPU-intensive tasks, you might want to consider a more powerful GPU upgrade. The GTX 1650 Super is a mid-range card, so if you are looking for higher performance, you could consider options like the GTX 1660 Super, RTX 2060, or even the newer RTX 3060 series depending on your budget and requirements.
Ultimately, the decision to upgrade your GPU depends on your specific needs, the types of games or applications you use, and how much of a performance improvement you are looking for.