Overclocking a GPU(R9 270)

JustTheOtherGuy

Honorable
Jul 26, 2014
17
0
10,510
So I asked yesterday if there was a clear winner between a GTX 660 and an R9 270X. Several people told me that the 270X was the better option, with one person saying the difference was not that large.
I have heard an R9 270 can be overclocked to match the 270X and was wondering how simple this would be, what a difference it can make, and if it could heavily affect the lifespan of the card? I'm just trying to get the best bang for my buck, as I was looking at the sub-$150 660 and the 270 is about the same price with the potential of matching the 270X
 

JustTheOtherGuy

Honorable
Jul 26, 2014
17
0
10,510
So is the 270x worth it for the extra$30-$40 over the 270 or 660? Or should I go the cheap route and just overclock? I'm aiming for 1080p 60fps gaming for last gen games(GTA IV Icenhancer, Arkham games/spiderman, sleeping dogs, tomb raider,etc.)