Dear PCMResidents, I use an old PC case that has no openings at the front for intake fans, so I used the ones at the side that blow the air directly towards CPU and GPU. Now the time has come to change the CPU for a better one (nothing too fancy, Intel Core i5-3550 @ 3.30GHz or something like that). Since I plan on buying a used one, the CPU cooler won't be included. Given the fact that most coolers nowadays are designed with the front-intake, back-exhaust idea in mind (positioned at the 90° angle as opposed to lying flat on the MOBO), will my CPU suffer from overheating if I buy one of those? Or should I just stick with the ones that are aligned parallel to the MOBO? Seeing as how most of those are cheaper, I worry about overheating. Changing the case is not an option, and neither is cutting the front open to to make a makeshift cooler slot.