Just thought that I'd finish this off. I have decided against doing a new build as what I REALLY was after was beefing up my second system to where it can handle Windows 10 better.
Instead of a totally new build I replaced the video card on my main with a new unit and put my old main video card in the second system. I spent a LOT of money on the new video card but I do a lot of video editing and re-encoding.
Here is what I had in the main. It is an AMD Sapphire r9 380 series 4 GB GDDR5 Nitro. This card is now in my second system.
https://www.amazon.com/Sapphire-DL-DVI-I-DL-DVI-D-Graphics-11242-07-20G/dp/B00ZGL8D5MHere is what I got to put in my main. It is a GIGABYTE Radeon RX 6700 XT EAGLE 12G GDDR6 12 GB card. Ya, I spent a LOT on the card at ~$1100.00 but that comes to a lot less than the $2500.00-$3000.00 I was looking at for a new build.
https://www.newegg.com/gigabyte-radeon-rx-6700-xt-gv-r67xteagle-12gd/p/N82E16814932418?Item=9SIAVT8F274462One of the reasons I wanted a higher level video card is that I'm now driving 2 4K displays. A 43 inch straight 4K and a 55 inch 4K with HDR.
I have to laugh at myself just a little on installing the new card as it would not quit fit being about 1/4 inch too long. I was a bit irritated as I knew the fit would be close and measured quite carefully. Nothing I did was getting it to fit. Then it finally dawned on me to pull off the output port's protection plugs that stick out about 1/4 inch. After that the card slid right in without issue.
So far all looks good and I'm happy. Of course time will tell as I just did the installs earlier today.