Is this system not doing what you need?
You have a really, really, good system. I would focus on other things like that monitor you want to get, and other peripherals to make life and multitasking easier.
I can't read your time spy score.
How many chunks are trying to render?
Give some more examples with temps for both cpu and gpu along with the amountof usage.
Did you use DDU to uninstall the older drivers, then install new drivers from Nvidia?
If the VRMs are getting too hot, make sure you have good air flow in the case.
It's the year 2024, not 2016. Get 32GB of RAM.
I don't know the prices in your part of the world, but if the budget allows, go for the 10 core i5 13400f.
That leaves you with 50 bucks and the PSU at that price is going to be a low end unit. I dont know if the PSU in your dell is proprietary and the reason why I pick the GPUs I did is because there extra power can come from the sata power cable without possibility drawing too much wattage.
I'm assuming an 270-300 watt PSU, so maybe a used GTX 1650 or 1660/super or RX 6600 will do. Avoid the low end stuff like the RX 6400 and 6500 and RTX 3050, the 3050 would be fine if the price was not so high.
I want to remind everyone that microchip implants is something that NO ONE should be comfortable with nor should be considered. We don't need this to become a trend and catch on.
Big NOPE from me. I have more thaughts on this, but if I share them I might get banned for hurting people's feelings.