Not sure if my CPU is bottle necking

[Jaytino]

So, I have gotten a new graphics card recently and every time I play games, it's extremely laggy and very often the game just crashes. I'm curious on what my problem is as I am fairly new to computers.

My parts are:

GPU: NVIDIA GeForce GTX 960
CPU: AMD Phenom II X4 965
Motherboard: ASRock 960GM/U3S3 FX

Before I had the GTX 960, I had the GTX 750Ti and it worked perfectly fine for a year then towards the time I was getting my new GPU, everything seemed to be going downhill on the performance side and I hoped the 960 would fix my problem, but it didn't. Temperatures are fine under load from what I've been seeing so I have no clue at this point. Any help is appreciated.

 

[Tradesman1]

Sound like the CPU is bottlenecking - the 965 OCs pretty well, have you OCed it?

 

[Jaytino]

Sound like the CPU is bottlenecking - the 965 OCs pretty well, have you OCed it?

I have not tried. Was thinking about doing it but I'm not really sure on how to do it correctly.

 

[Tradesman1]

Check the web for an OC guide for 965 and your mobo may be the easiest way