Advice on new pieces

[Orphious]

Hello! I built this PC in Nov 2011 for gaming, and haven't upgraded anything since (mostly because of budgets). It still runs well, it has served me good. I have kept good care of it but its starting to show its age because newer games don't run very well unless the settings are turned down, even then its not smooth. Some of my components are discontinued. So I'm looking for any opinions on what I should do? New GPU/PSU/case, more RAM? Any thoughts welcome. Thank you for looking!

CPU : Intel Core i5-2500K

Motherboard : GIGABYTE GA-Z68XP-UD3P LGA 1155
http://www.newegg.com/Product/Product.aspx?Item=N82E16813128506

GPU : Radeon 6850
http://www.newegg.com/Product/Product.aspx?Item=N82E16814102908

PSU : OCZ ZS Series 650W
http://www.newegg.com/Product/Product.aspx?Item=N82E16817341048

Hard Drive : Hitachi 500gb
http://www.newegg.com/Product/Product.aspx?Item=N82E16822145299

Disk Drive : ASUS 24x DVD Burner
http://www.newegg.com/Product/Product.aspx?Item=N82E16827135204

Case : Rosewill Challenger
http://www.newegg.com/Product/Product.aspx?Item=N82E16811147153

RAM : CORSAIR XMS3 8GB (2 x 4GB)
http://www.newegg.com/Product/Product.aspx?Item=N82E16820145315

OS : Windows 7 64bit oem

 

[ihog]

I would definitely upgrade the GPU, buy an aftermarket cooler for the 2500K, and overclock your CPU.

And if you're running out of space, then you should grab another HDD.