I can buy large form factor Dell OptiPlex 3020 from someone cheap and am going to change out the PSU to a 750 watt, yes I will need the 24-pin to 8-pin power adapter for Dell proprietary crap.. but has anyone done this before and had it work? Any PCIe issues with it being 2.0 etc? I don't want to purchase the OptiPlex and adapter unless this works. I've seen some newer cards not work on Youtube but other ones (3060Ti) did.