Question about Gigabyte GeForce RTX 3060 Gaming OC LHR

Modern graphics cards don't have DVI with Duallink (which is required for the 30" version), so you would have to use an older/weaker graphics card (GTX 1660 / GTX 1650 / RX580).

You may also be able to solve this with an adapter (Duallink adapter to HDMI/DP), but I can't say how reliable this solution is, but it will probably be cheaper/easier than buying a new graphics card.