My Rig:
AMD Phenom II X4 955
12GB RAM 1600
AMD Radeon R9 270 (non X)
GA-MA785G Gigabyte Motherboard
Windows 7
PSU 500W (80% efficient)

I just replaced the GPU, but realised that my CPU is the cause of bottlenecks. I can sometimes get great FPS from Tomb Raider and Splinter Cell Blacklist, but the jerkiness is very obvious... sometimes 70+fps, sometimes 20+ fps...

So, I hear that this can be fixed by replacing the CPU, but my mobo is about 5 years old. Not sure if can change to FX6300.
Should I get a new mobo+processor instead? Can recommend best combo?

TQ sifus for advice...

Nope. Phenom II X6 1100T is the most you can go. You can try getting a good third party heatsink and overclock to the max. However, your 500W may not be enough for maximum overclocking.

http://www.gigabyte.my/support-downloads/c...p.aspx?pid=3138

If you want more, sell your CPU, mobo and RAM for new setup.

Core i5-4460 - RM569
Asrock B85M-HDS motherboard - RM239
Kingston 8GB DDR3-1600 x1 - RM229

This post has been edited by TristanX: Nov 4 2014, 09:38 AM

Hi, thanks for the great advice!

If you are going overclock path and hitting the wall, I suggest getting Seasonic S12 II 620W at RM299 or Coolermaster V 650W Semi-modular at RM369 from Viewnet or C-Zone.

This post has been edited by TristanX: Nov 4 2014, 09:45 AM