Yes you can

Yes, the case comes with four 120mm ARGB Lite Fans pre-installed: one at the rear for exhaust and three on the side for intake. These fans feature hydraulic bearings and support ARGB lighting controllable via motherboard software from Asus, Gigabyte, MSI, and ASRock.

Yes, the View 380 TG ARGB comes with four 120mm ARGB Lite Fans pre-installed. One fan is mounted at the rear for exhaust, and three additional fans are mounted on the side for intake.

The Arctic Liquid Freezer III 420 A-RGB has a radiator length of 458 mm, width of 138 mm, and thickness of 38 mm. The Thermaltake View 380 TG ARGB case supports graphics cards up to 415 mm in length and CPU coolers up to 160 mm in height, but the case specifications do not explicitly state the maximum radiator length supported. Given the radiator length of 458 mm exceeds the typical support for 420 mm radiators in many mid-tower cases, it is very likely that the Arctic Liquid Freezer III 420 A-RGB radiator is too large to fit inside the Thermaltake View 380 TG ARGB case. This explains why the cooler is too big for this case. There is no indication of a way to fit this specific 420 mm radiator in the case without modification or removal of other components.

Yes, that would fit and look good too.

A 420 mm radiator does not fit into the case. According to official specifications, a maximum of one 360 mm radiator at the top and one 280 mm radiator at the side are supported.

Hello, The Thermaltake View 380 TG ARGB case, even the white version (Snow White), is designed to support ATX and micro-ATX formats, not just mini-ITX. The Cooler Master V850 Gold power supply is compatible with this case. The View 380 TG ARGB can accommodate power supplies up to 200 mm in length, which corresponds to the dimensions of most power supplies in this range.