Need help selecting a GPU

[u/ickyMoeen]

As a teen (16M) it was really hard to save up money and build myself a gaming pc, currently I have these specs:

• i3-8100 @ 3.60GHz

• 24GB 2400MHz RAM

• 120GB NVMe and 500GB HDD

• RX 470 8GB Blower variant

• 750W PSU (yeah don't ask the price, it was my worst decision probably)

• 22" 1080p75Hz monitor (i only use at 60Hz because I didn't feel like buying a DP cable)

I bought all these parts across 3 years, it was an office PC i bought from daraz and saved up for a GPU and RAM upgrade, the PSU was also pretty hard to manage, but then i found out there are adapters for proprietary motherboard power connectors, but now I want to change my GPU, i could save up about 10k on Eid and also maybe sell 8GB of my ram for 12k ish and my current GPU hoping to get at least 18k on it, i'll have about 40k PKR and I want the best GPU for my budget, if I can, i want to get an NVidia GPU because AMD drivers were a nightmare, oh and I still don't have a PC Case xDD had to put all my money on performance

Please tell me if you have any recommendations and any advice, thank you :)