Johnnnnn Hi. If you are located in the Philippines, and are looking to purchase new, then the two websites below are worth checking out:
https://dynaquestpc.com/collections/graphics-card
http://pcgilmore.com.ph/index.php?route=product/category&path=25_65
Since your CPU is ten years old, you won't want to purchase a graphics card that will be too powerful, since it will be underutilized by that processor.
If used, a Nvidia GTX 750 TI, is an option.
If new, a Nvidia GT 1030 GDDR5 (!NOT DDR4), or AMD RX 560
* However * to state the obvious, no matter which modern graphics card you purchase, I'm pretty confident that it's going to be stuttery. If you have a budget to upgrade your platform (CPU / motherboard / RAM) then I recommend you do so. But otherwise, any modern low-powered GPU should allow you to have a "functional" experience gaming. I recommend that you search your athlon ii x2 260 into YouTube. Take a mental note of which graphics card those reviewers are pairing with your CPU and then pay attention to the game playing experience shown in the video (below):
https://www.youtube.com/results?search_query=athlon+ii+x2+260