Why can't i sem to run Minecraft with stable FPS and many other games?

Pc specs
CPU- AMD FX 8320 8 core processor BLACK EDITION 3.4 Ghz not Overclocked
GPU- HIS Radeon HD 7970 PCI 3.0 3gb GDDR5
RAM- 12 Gigs
1TB HD
120gig SSD

Even in skyrim and other … Show more

Try updating your graphics drivers from AMD's website, if you have not already.

Multi-Core processor.
Try setting the Affinity to "0" for the older games.
Too many processors are 'confusing' the game program.
Also, try using 'Compatibility Mode' (XP, Vista, even Win98).
Run (install) games with Administrative Privileges might help, if you are the Admin.