Okay, I just built my first ever gaming rig and I want to overclock both the CPU and the GPU. I need to know some general information on how to do it and what is idealistically possible to achieve with it. Thank in advance for the help.
Open up AMD Catalyst Control Center, go to the Performance tab and click on CPU and GPU overdrive. It will walk you through what to do, which is pretty much let the program do it's own thing.
That program came with your drivers, I have a R9 270X as well but I'm running the Vishera 8350 8 - core processor.
Remember that most of gpu bios oc will void warranty :P if they can find out whats wrong with the card :D so if you break it - make sure you break it real good. CPU only from bios as stated above.
HERE is a tutorial exactly for FM2 Trinity CPU overclock...
It is a basic tutorial, they just gave you some rules to follow...
My advice - test your a** off... Test, test, test, and then test some for a change... It takes time... 5 minutes Prime95 is not gona cut it... 4 hours Prime95 without issues is much better test... And keep your eyes on CoreTemp, or whatever software you use to check the temperatures...
For a GPU - go for MSI Afterburner... Not an issue, that it is MSI... It works with all GPUs...