Do I Need Thermal Paste?

[Invisipixel]

The title says it all, I'm new to building PC's and don't know if fi need any extras at all for this build, thanks!
PS-This will be used as a gaming machine if that helps.
PCPartPicker part list: http://pcpartpicker.com/p/jqXqgs
Price breakdown by merchant: http://pcpartpicker.com/p/jqXqgs/by_merchant/

CPU: Intel Core i5-4460 3.2GHz Quad-Core Processor ($176.99 @ SuperBiiz)
Motherboard: ASRock H97 PRO4 ATX LGA1150 Motherboard ($83.89 @ OutletPC)
Memory: Crucial Ballistix Sport 8GB (2 x 4GB) DDR3-1600 Memory ($58.89 @ Newegg)
Storage: Seagate Barracuda 1TB 3.5" 7200RPM Internal Hard Drive ($49.30 @ Amazon)
Video Card: Zotac GeForce GTX 970 4GB Video Card ($307.99 @ Amazon)
Case: Rosewill CHALLENGER ATX Mid Tower Case ($46.00 @ Amazon)
Power Supply: XFX 550W 80+ Bronze Certified ATX Power Supply ($44.99 @ NCIX US)
Optical Drive: Samsung SH-224DB/BEBE DVD/CD Writer ($14.98 @ OutletPC)
Operating System: Microsoft Windows 8.1 (OEM) (64-bit) ($87.79 @ OutletPC)
Wireless Network Adapter: TP-Link TL-WDN4800 802.11a/b/g/n PCI-Express x1 Wi-Fi Adapter ($34.80 @ Newegg)
Monitor: Acer UM.WV6AA.B01 60Hz 21.5" Monitor ($105.99 @ SuperBiiz)
Keyboard: Cooler Master CM Storm Devastator Gaming Bundle Wired Gaming Keyboard w/Optical Mouse ($26.99 @ NCIX US)
Total: $1038.60
Prices include shipping, taxes, and discounts when available
Generated by PCPartPicker 2015-04-22 06:43 EDT-0400

 

[HungrySpartan2]

YES! You do need thermal paste, You can get it very cheap on PcPartpicker, its always safe to get some when you build a computer, even if it comes applied, ex; for aftermarket coolers, better paste. ect. Good luck!