Due to your A8N-Sli antique socket 939 & nForce4 chipset ,any updating of newer GX card will be a waste of time & money I'm afraid.
The CPU just can't cope, would suggest you save up & get a new PC.
Huawei MateBook X Pro (2019) review
Magical mystery tour - Artist colourfully customises bus to promote positive mental health
Apple Streaming Service Release Date & Apple TV Subscription Rumours
Quel est le meilleur iPad ?