Setting up my fans, and how many

I am brand new to PC building.  I have, however, ingested hundreds of hours of info from the web, and feel that I am about ready to tackle my project...but I have questions about fans and my particular cooling setup.  So far, I have the following hardware:

Fractal Node 605 - Fractal's website details that it is set up to run positive pressure cooling http://www.fractal-design.com/home/product/cases/node-series/node-605

ASUS Gryphon mobo - http://www.asus.com/Motherboards/GRYPHON_Z97/

Rosewill 750W 80+Gold PSU - http://www.rosewill.com/products/1806/ProductDetail_Overview.htm

1TB WD Black HDD

Samsung 840EVO 250GB SSD

G.Skill Ripjaws X 16GB (2x8GB) RAM

Zalman CPU Cooler - http://www.zalman.com/global/product/Product_Read.php?Idx=161

ASUS GTX770 DirectCU II - http://www.asus.com/Graphics_Cards/GTX770DC2OC2GD5/

And, I plan on picking up the Intel i5 4690k - http://ark.intel.com/products/80811/Intel-Core-i5-4690K-Processor-6M-Cache-up-to-3_90-GHz

I plan to use this as a HTPC/Gaming rig, in a house that is typically kept in the low to mid 70's (F°).  The Fractal case comes with:

  • 5 fan slots total (3 - 120mm + 2 - 80mm)
  • 2 – 120mm Silent Series R2 fans included
  • Air filters for side fans and PSU
  • Integrated three-channel fan controller (included)

I will probably play with overclocking.  I will play an average of 3 hours of games per day, some of them very taxing, and the remainder of its use will be delivering audio and video, and navigating the internet.

So, my question is...if I decided to regularly run at a mild overclock, keeping voltage around 1.25 (max), what type of extra cooling would you recommend, and would you recommend replacing the Zalman air cooler with a closed loop water cooler?  And, lastly, should I take Fractal's advice and run at positive pressure?

 

I know this is a long post, and I would like to thank you, in advance, for your time and suggestions.

Using the two stock fans will be fine. You shouldn't require more. However, it doesn't hurt to populate all the fan slots, ensure that you can fit all your components in the Node 604 before you purchase the fans. And yes, positive pressure would be advisable with this chassis.

Awesome.  Thanks for the advice!  I researched a lot before picking my hardware to ensure that each piece will fit (some, just barely), but wouldn't know if the extra fans would still fit or not, so I will wait until I start the build to make that call.