When you think of Thermaltake, the first things that come to mind are probably CPU coolers and PC cases, or even PSUs. You definitely don't think of monitors because, well, it's never made any before.
A new monitor can be a great thing, but your computer might not adjust its settings to take advantage of it automatically.
You should also pay attention to the PCI Express connection–at least PCIe 3.0, preferably PCIe 4.0 or 5.0–and the M.2 form ...
Upgrading your case now, while other parts are unaffordable, freshens up the look, and adds new features that carry over into ...