Are there any improvements that you could make to these PC builds? If there are any improvements I'm on a tight budget so nothing over $20. If these would be good for gaming and if there are cheaper, better or equal alternatives to the parts I have selected that would be great. Refer to them as
Build 1: http://pcpartpicker.com/p/mQ76K8
Build 2: http://pcpartpicker.com/p/xdCMyc
Build 3: http://pcpartpicker.com/p/hJxVLk
If your ambient temperature is below 70C then you will not need the Cooler Master CPU cooler. The CPU comes with a factory CPU cooler that will make the job.
Your configuration is very well at all. But I'll choose a better graphic card for the price. You will be able to play every single game on High or Ultra setting with this card.
If you are not going to overclock you will not need the K series of Intel processor. The 4590 is pretty fast and stable.
On the memory side, well, I never ever have seen difference between memory brands. I just choose the cheapest that can go to 1600Mghz.