A:AnswerThis would be a great budget cooler for the 10400f for cooling
The LGA 1200 socket still uses the same cooler mounting as the 115X coolers so fitment to your board should be good too. Only possible concern would be if the case is wide enough to support a cooler of this size
A:AnswerI have an msi z370 motherboard. The cooler came with brackets, and yes, I would highly suggest using them. If not, the weight of the cooler may cause issues with just paste holding it in place.
A:AnswerYou can buy them at most any major retailer of PC parts. Most any 120mm case fan will work, the Hyper 212 will come with a couple little black brackets to attach the fan to the heatsink.
A:AnswerNo it will not fit. At least that particular product will not fit in that case. And if it did fit, the HP board will not detect the fan and you will be dealing with error messages. I install them on SFF boards that I move to a gaming box such as HP's Elite 8200 G2. However, I do it for a living and have ways around the error messages but the average person would not be capable of fixing it and it might turn into a mess. I hope this was helpful.
A:AnswerFrom the listed dimensions, I think 6.3 inches is the most likely answer to your question. When you look at the LxHxW measurement, 6.3 is the largest number so that is probably the worst case scenario.
A:AnswerYes it will. I've used it in 2 Similar Cases the Corsair ICUE 220T and the Corsair 175R and I believe that these are listed as Mid (compact) cases. Considering the given dimensions this should fit without issue.
A:AnswerYes it should. I have place it in a Thermaltake V100 case, an Asus X79 Deluxe Motherboard with 4 sticks of Patriot Ram and it fits perfectly. I've looked at your case and it should fit as well.
A:AnswerRam shouldn’t have any issue fitting at all. I guess it maybe certain mini itx board might have some issues but I cannot see this being a problem on standard itx boards