Need help with upgrading PC £500 budget

[Jakebro101]

My Current Specs
GeForce GTX 960

Intel(R) Core(TM) i5-2400 CPU @ 3.10GHz

Ram 8 GB

MotherBoard ASUStEk P8Z68-V LX

Power supply – FSP450-60APN – DC output – 450W

I'm looking to upgrade my graphics card and CPU for around £500 give or take so I can get back into PUBG. But I have no idea if my old PSU and MB will affect this. Do I need to upgrade my PSU and MB or could I get away with just upgrading my Graphics card and CPU?

 

[Jakebro101]

Ye, I can add £70 onto the budget. Any recommendations over the £500 would be great too.

 

[Jakebro101]

Thank you for the recommendations! Much appreciated.