Secondly, if they can fit in my case, which of these fans will be best for my build?
Thirdly, what's the use of thermal paste? And how do you use it? (I'm still new to building computers. lol)
Thanks in advance for all the answers!
My CPU temps
Idle: 45 C
Load: 90 C
I'm currently using the stock CPU fan and I know I need to replace it.
Those are my only choices because they are the things only available near my place.
Lastly, I don't plan on overclocking, but still, I want the best for my build.
All those coolers fit inside your case EXCEPT the Hyper 212+, I'd go with the SpinQ VT.
Most cases provide a three dimensional limit in Millimeters like... 8 inches high (From your motherboard to your side panel window) also length and width which can be useful for determining ram clearance as well.
A know-nothing knuckle dragger like me just buys the biggest Case I can find and shove the heaviest copper weight I can lift, steal, strip or buy into that CPU spot.
Check my Hyper 212+ installation guide in my signature, the Hyper 212+ almost fit in a TT V9. Even, if you press the side panel of the V9 you can touch the cooler with the panel, so, in the V3 and V4 won't fit.