Yes, you can upgrade the motherboard for the Dell Optiplex 990 with newer components.
Yes, you can upgrade the motherboard for the Dell Optiplex 990 with newer components.
You're considering upgrading your system with a new GPU while keeping the same motherboard and case. The Optiplex 990 MT supports AM4 sockets, so you should be able to install an Am4 CPU there. Just make sure the new GPU is compatible with your motherboard model and that you follow the installation guidelines carefully.
What model are you using? They offered several sizes. Checking your 990 shows it’s a matx case, so the matx board should fit. The power button and front panel lights function properly since it isn’t a typical connector.
These features require significant modification to function properly