Low fps with x4 750k

[FatCandy]

My cpu is on stock settings , gpu: r9 270 (1110mhz core , 1500 memory) , 8 gigs of ram 1600 mhz , psu : cx500 .. Well im playing on 1280x768 resolution and my fps in general sucks.. For example on both assassins creed III and IV on medium to low settings i get 30 fps with drops. I'm really dissapointed with that performance , oh my gpu usage pretty much never exceeds 70% on new pc games.

 

[Xavier Bouttier]

What CPU?

That PSU is not that good

And which MOBO?

And what are your temperatures while playing?

If you dont have it already, download CPUID and tell us your temps:
http://www.cpuid.com/softwares/hwmonitor.html

 

[Wisecracker]

Don't take this the wrong way, but your situation is a bit convoluted.

The R9 270 is over-kill at 1280x768, and you've over-clocked it to boot. Also at that resolution the demand is dumped on the 760K forcing a CPU-bound situation which is exacerbated by your 1600MHz RAMs (faster RAMs can boost memory bandwidth on the 760K by 20% or more).

On top of that, you are using Assassin's Creed as your measuring stick, with a game engine that is focused on consoles.

Over-clocking the 760K should help. Playing games other than Assassin's Creed will help more