i have a thermaltake chaser a31 and my cpu is running a little hot so i'd like to know how many case fans should (can) i put in it and whether they would be intake or exhasut fans. and i'm buying a cpu cooler the only one available in a store near me is the CM tcp 812 so how is it compared to the hyper evo 212 and will it fit in my case?
the CM tcp 812 has 2 additional vapor chamber heat pipes it is better than the hyper evo 212.
as for the case the manufacture gives you these options
Front (intake) :
120 x 120 x 25 mm Turbo fan x 1 (1000rpm, 16dBA)
120 x 120 x 25 mm (optional)
Rear (exhaust) :
120 x 120 x 25 mm Blue LED fan (1000rpm,16dBA)
Top (exhaust) : (optional)
120 x 120 x 25 mm fan x 2 or 140 x 140 x 25 mm fan x 2
Bottom (Intake) : (optional)
120 x 120 x 25 mm fan
if your temps are 50-60 degrees Celsius it is running perfectly fine.
the way the manufacture tells you haw to install the fans is the best solution,because they optimize the airflow when building it.
Two in the front (intake), two on top (exhaust), and one in the rear (exhaust).
The Cooler Master TCP 812 is 158mm, your case supports up to 160mm, so that should be good. As far I remember, the 812 was considered a step up from the Cooler Master Hyper 212 EVO, that so that works out for you well.