What is a good and cheap desktop that can run skyrim?

I need a cheap desktop that can run skyrim and like minecraft with alot of mods on and with no lag and simulation games like euro or goat simulator i need it to be cheap like $600

What do you have now? You could upgrade/install new parts

I would recommend building your PC
Example

Prosessor - 120
http://www.newegg.com/...-_-Product
Motherbord - 80
http://www.newegg.com/...6813131872
Ram - 85
http://www.newegg.com/...6820231428
HDD - 100
http://www.newegg.com/...6822178291
GPU - 120
http://www.newegg.com/...-_-Product
Case - 40
http://www.newegg.com/...6811119227
PCU - 75
http://www.newegg.com/...6817182068

This is 620$
still lacking in DVD drive (i don't have one), inputs (keyboard and mouse), and monitor. If you do decide to build a PC you can use this build as a reference. Just make sure the parts will work together

Also lacking an OS. (installed mine through a usb) You can just pirate that though.

Here's a good one for $450 ($550 with windows 8.1 if you don't want to pirate it):
CPU: AMD "Richland" Quad-Core 4.4GHz Turbo
GPU: ATI Radeon HD 8670
RAM: 8GB DDR3
HardDrive: 2TB 7200RPM
Other: DVD+RW, Wi-Fi

G100 from http://dreamdesktops.com/