Will a PhenomII X4 840 (3.2ghz 4core) bottleneck a R7 270x?

[javierbyte]

If I will have a severe botteleneck, then, which should be my next processor and mobo?

 

[DesmondSky]

Not a chance of a bottleneck

 

[javierbyte]

Thank you! and the gtx 750ti?

 

[jay2577]

It might bottleneck it in some games but not at all in others. It does depend on the game and how CPU dependent it is. Battlefield 4 multiplayer (not single) will probably be bottlenecked as well as skyrim a little. If you have good cooling you can overclock your CPU. What's your CPU cooler?
If you do want to upgrade to a new motherboard/CPU the AMD 6300 and an AM3+ motherboard seems to be very good value. if you already have an AM3+ motherboard ou might be able to just upgrade you CPU. List your motherboard and i'll check to see what's compatible with it

 

[javierbyte]

My mobo is M68MT-S2P, my cooler is the cooler master hyper tx3 with 2 fans. Thank you!

 

[jay2577]

Your motherboard won't support an AMD FX 6300. You would need a new motherboard too.
Your cooling seems fine for a little overclocking though. Is your CPU a black edition with an unlocked multiplier? If so you could try bumping up the multiplier in the bios a little at a time, monitoring your CPU temps after every adjustment and see if it gives some extra performance.