i7 deals question.

[VillAl]

Hi people, i got offered this deals of some cpus;
i7 6700 for $220 us dlls (new with stock cooler)
i7 4790 for 135 us dlls (it doesnt have a cooler)
i5 6400 for 130 us dlls (it is used but it haves a cooler)
i5 3750 for 50 dlls (used, no cooler)
which one should i get and why?
i want to get the most fps possible but thinking in my budget if i get the most expensive i7 i would be more limited to buy other components
i want to build a 500dlls gaming pc but if i have to, i can extend the budget to 650-ish dollars.

 

[raisonjohn]

Here's a suggested ~$650 build (using that new i7-6700 deal for $220):

PCPartPicker part list / Price breakdown by merchant

CPU: Intel Core i7-6700 3.4GHz Quad-Core Processor ($220.00)
Motherboard: ASRock H110M-HDS Micro ATX LGA1151 Motherboard ($44.99 @ SuperBiiz)
Memory: G.Skill Aegis 8GB (2 x 4GB) DDR4-2133 Memory ($55.99 @ OutletPC)
Storage: Seagate Barracuda 1TB 3.5" 7200RPM Internal Hard Drive ($46.88 @ OutletPC)
Video Card: PowerColor Radeon RX 470 4GB Red Devil Video Card ($178.98 @ Newegg)
Case: Cooler Master N200 MicroATX Mini Tower Case ($40.99 @ NCIX US)
Power Supply: SeaSonic 520W 80+ Bronze Certified Fully-Modular ATX Power Supply ($62.89 @ Newegg)
Total: $650.72
Prices include shipping, taxes, and discounts when available
Generated by PCPartPicker 2017-03-22 02:41 EDT-0400

 

[helpstar]

Which games will you play?

 

[VillAl]

Which games will you play?

gta v and bf1 mostly