A:AnswerThe fans are 120 the radiator is 240 or 2 x 120 another key point is that the fans areML series which are magnetic drives and not bearings. They also are not RGB fans
A:AnswerYes, I just did a build using a MSI MEG 390 ACE motherboard with an i9 9900k CPU and it works perfectly. Make sure your case is large enough because you need room for the cooling tubes from the CPU to the actual cooler mounted in the top of the case. If your case is small, it will be difficult to attach the cooler to the CPU and route the cooling lines to the cooler.
A:AnswerThis might hurt Best Buy but none of the corsairs will work you would be best to go with this company calles "Be Quiet" https://www.bequiet.com/en/watercooler/732.Einbauvideo+be+quiet+SILENT+LOOP+280mm+in+DARK+BASE+PRO+900Sorry
It will work with your CPU but make sure it will work with your mother board for room. See the specs on that page I provided.
Have a Nice Day
A:AnswerA couple of things to keep in mind. The size of the case you have if it is mid size and has access to good air flow for the Unit that takes in air and you have an extra sata power cable available and also a usb port on the motherboard available. If all is yes then it will work just fine. I have installed this on a same type of motherboard and mid size case just fine.
Make sure you read the manual. It is simple and works with Intel and AMD out of the box all parts are there.