Hi I bought the Cooler Master Hyper 212 plus and was wondering if I should go for the Push/pull Configuration. I will be using stock fan from the Heatsink and a Arctic Cooling AF12PWm 120mm fan. Thank you for your answers in advance
If you're looking for a significant decrease in CPU temperatures, this isn't the way to get there. A second fan will decrease your temps by MAYBE 2-5 degrees C. If you already have a second fan, go for it, but save your money and valuable case space otherwise and stick with a powerful single fan.
I'd wager that adding a second fan could actually prove detrimental because it would:
1. Limit available space inside the box
2. Limit airflow somewhat (more space taken up by plastic)