Upgrading Stock Case Fans - Could Use Help.

[nikkolaus]

Looking to upgrade my stock fans to a more high-powered rate of airflow, for cooler temperatures. I currently have a Rosewill Stealth case, with 2 in fans and 3 out (1 back-side - 2 top-side). One of the out fans (topside) is put in by me, and it's a 120mm Fractal Design Silent Series R2 (SSR2) rated at: 1200 +/- 10% 40.6 CFM || 15 dBA.

I am looking to upgrade all 5 fans, if need be.

My system generally gets pretty heated, and I'd like to see it reduced significantly. CPU Cooler is stock, which I can hopefully change out eventually.
I know this sounds crazy but with the air filters on, and only Firefox and Skype open it sometimes idles at the temperature of around 105-110 F. During heavy gaming the processor temp. can get as hot as 155 - 164 F. (seen with the software CPUID HWMonitor)

If you would like to see my system specs, they are here.
http://pcpartpicker.com/p/ZCWFqs

or the more detailed view here:

Spoiler

Case
Rosewill STEALTH ATX Mid Tower

Power Supply
Rosewill Hive
Semi Modular
750W
80+ Bronze Certified

Motherboard
MSI Z97 PC MATE ATX
Socket: LGA1150

Processor
Intel(R) Core(TM) i5-4690K CPU @ 3.50GHz
Speed 3.5 GHz
Number of Cores 4
CPU ID BFEBFBFF000306C3
Family 06
Model 3C
Stepping 3

Video Card ASUS R9 280 Series
Manufacturer ATI
Chipset ASUS R9 280 Series
Dedicated Memory 3.1 GB
Total Memory 4.0 GB
Pixel Shader Version 5.0
Vertex Shader Version 5.0
Hardware T & L Yes
Vendor ID 1002
Device ID 679A
Plug and Play ID VEN_1002&DEV_679A&SUBSYS_047E1043&REV_00
Driver Version 14.502.1014.1001

Memory
G.Skill Ripjaws X Series
8GB (2 x 4GB) DDR3-1600

Operating System
Microsoft Windows 8.1 Professional Edition (build 9200), 64-bit
Service Pack 0
Size 64 Bit
Edition Professional
Version 6.2.9200
Locale 0409

BIOS
Version: v4.7
Manufacturer American Megatrends Inc.

Display Maximum Resolution 1360 x 768 (ARIO LCD TV)

Optical Drive: CD/DVD (LG)
HL-DT-ST DVDRAM GH24NSC0

HDD Storage:
Drive 1 (E: Movies/Backups)
Size 2.7 TB
Drive 2 (D: Games)
Size 931.4 GB
Drive 3 (C: OS)
Size 931.0 GB

Browsers
Internet Explorer: 11.0.9600.17801
Chrome: 43.0.2357.81
Firefox: 38.0.5

Software
Java: 8.0.450
Flash: 17.0.0.188
DirectX: 11.0
QuickTime: 7.76.80.95
Adobe PDF Reader 11.0.11.18

Information Provided by http://www.systemrequirementslab.com

 

[Icaraeus]

Make sure you clean out all dust, and have a fan blowing air across the CPU. Clean up cable management to improve airflow. Disable all overclocks.

 

[nikkolaus]

Make sure you clean out all dust, and have a fan blowing air across the CPU. Clean up cable management to improve airflow. Disable all overclocks.

Yes, I know all this already. It has no dust inside it... Its a fairly new PC... I put it together in early March 2015.
As I said - Stock CPU cooler.
Cable Management is as good as it's going to get... Most cables were routed thru the side-wall of the case, and using a Semi-Modular PSU.
I don't do overclocking.

 

[Icaraeus]

It's probably just the stock CPU cooler, but it's nothing to worry about. Haswell gets hot by default, but it's not an issue