Which is more important to cool? CPU or GPU? Know any cost effective coolers?

[Arcanist]

PCPartPicker part list: http://au.pcpartpicker.com/p/2bbnv
Price breakdown by merchant: http://au.pcpartpicker.com/p/2bbnv/by_merchant/
Benchmarks: http://au.pcpartpicker.com/p/2bbnv/benchmarks/

CPU: Intel Core i7-4770K 3.5GHz Quad-Core Processor ($379.00 @ CPL Online)
Motherboard: Asus GRYPHON Z87 Micro ATX LGA1150 Motherboard ($181.00 @ CPL Online)
Memory: Corsair Vengeance LP 16GB (2 x 8GB) DDR3-1600 Memory ($149.00 @ Mwave Australia)
Storage: Samsung 840 EVO 120GB 2.5" Solid State Disk ($108.00 @ PLE Computers)
Storage: Seagate Barracuda 2TB 3.5" 7200RPM Internal Hard Drive ($98.00 @ CPL Online)
Video Card: Galaxy GeForce GTX 770 2GB Video Card ($369.00 @ Mwave Australia)
Case: Corsair 500R White ATX Mid Tower Case ($155.00 @ CPL Online)
Power Supply: Corsair CX 600W 80+ Bronze Certified Semi-Modular ATX Power Supply ($99.00 @ Mwave Australia)
Total: $1538.00

 

[Thyrax]

I believe both components are equally as important to cool. However, I never had an issue in my experience with the stock coolers on GPUs. I did though with CPU coolers.. after I used a Zalman cooler.. never had an issue ever again.

http://www.newegg.com/Product/Product.aspx?Item=N82E16835118223

You can search this cooler from Australia or wherever you are at for a better price, but I always loved Zalman and their customer service was great when I needed new brackets for my new motherboard.

I dont think you will have an issue with Zalmans products.