Take a look at my offer, my card is brand new: EVGA GeForce RTX 2060 KO Ultra Gaming (6 Go) 1. **PCIe slot** : The RTX 2060 requires a PCIe x16 slot. Make sure your motherboard has this slot. 2. **Power supply** : The RTX 2060 requires a sufficient power supply, generally around 500 watts, with 8-pin PCIe connectors. Check the power and connectors of your power supply. 3. **Case space**: The RTX 2060 can be quite large. Make sure your case has enough space to accommodate it. 4. **CPU Compatibility**: Although the RTX 2060 runs on a Ryzen 3, performance may be limited by the CPU (known as a bottleneck). A more powerful processor could better exploit the capabilities of the RTX 2060. 5. **RAM**: Having enough RAM is important for overall performance. 16GB is often recommended for a balanced gaming system. 6. **Cooling**: The RTX 2060 generates heat, so make sure your system has good cooling.

There are no worries between the processor and the graphics card. As far as the power supply is concerned, in order to have some margin and also to be able to keep it longer (if you make other modifications). I advise you to get a 650W. :)

Depending on your budget, however, your configuration is far from obsolete. So you might want to change your graphics card first, and then replace the rest of your system when you see that it is reaching its limits.

Yes, theoretically that is correct, but you never actually write it that way ;) 8GB are also 8192MB, 16GB are 16384 etc..

What is your PC system like? Please provide a few details (CPU, RAM, mainboard type etc...) then the community can help you in advance to buy a compatible card. Returning used items is possible as far as I know, but it involves a loss on your part, i.e. you will not be refunded the full purchase price.