Upgrade or save for new system

[Varty]

I am just wondering if it will be worth while upgrading my current system or saving for new one.
If it is worth upgrading please can you advise.
i use my system just for gaming.

specs

am3+ fx-6200 x6
seagate 1tb sata3 32mb 6gbs
asus m5a78l-m usb3
kingston ddr3 4gb
950 psu
gtx 570

 

[Varty]

psu is cyberpower.
Have had the system two years.
I play LOL mostly and the system is fine for that but now and again i jump on other games like dayz.
Would like to get my fps up in mmo's and shooters.
If i was going to buy/build a new system i would say my budget would be around £1500.

 

[Varty]

Thanks for all the reply's,
Looks like i will just save for a new system then.
Monitor is ASUS VE278.