Thoughts on low budget Gaming PC

[Theblue003]

Hi, I am I'm wondering if this system is good for what it is priced at, I play league, wow, dota, skyrim and other games alike. I am wondering if the following is actually a decent system for games like these and if there are upgrades that I should make. I prefer to just buy a prebuilt PC even if it it cheaper to build one, so any advice on this current PC would be helpful and if you can tell me about possible upgrades that I can make myself that would be great too.
It is $600, please just let me know your opinion. I don't play high end games I just want a PC that can run games on atleast medium settings maybe more with close to 60 FPS. If the system is fine please elaborate if you can, I appreciate any feedback!

The specs are the following;

Tesseract White Tower case, comes with 4 -120mm BLUE LED Cooling fans

ASRock 970M Pro3 R2.0 AMD 970 + SB950 UEFI BIOS, USB 3.0 Boost Motherboard

AMD FX-4300 Vishera Quad Core Black Edition 3.8GHz (4.0GHz Turbo) with heatsink/fan

Crucial Ballistix Sport Series 8GB (2 x4) 240-Pin SDRAM DDR3 1600 (PC3 12800) Fast 9-9-9-24 Clock Desktop Memory

Apevia Java Series 650 Watt ATX12V v2.3/EPS12V v2.91 SLI Ready

Hitachi Ultrastar 1TB 7200 RPM SATA Hard Drive

PowerColor Radeon HD 7850 2GB GDDR5 PCI Express 3.0 Video Card HDMI, 2 x DVI, 2 x Mini Ports

Asus DVD Burner 24X DVD+R, 24X DVD-R, 16X DVD-ROM, 48X CD-R, 24X CD-RW
Realtek Audio and Ethernet network adapter

Windows 7 Professional 64 bit

 

[CTurbo]

You can do much better for $600. Is that a pre-built or a used system?

 

[Theblue003]

It's a pre-built system, I know I can do better. However I am just wondering if it's any good, with specifics if good/bad.

 

[CTurbo]

Other than the psu, it's not completely terrible. I would not pay anywhere near $600 for it though.

Maybe $400