Should I upgrade my PC or buy a completely new one?

[Hramzyn]

Hello, I have had this gaming rig since 2008, and of course it is not so high end today.

My specs are:

Motherboad: ASUS M3N78 SE
CPU: AMD Phenom II X3 710 2600 MHz
GPU: Gigabyte 9600 GT (GV-N96TZL-1GI) overclocked to 800 / 2000 / 1000 MHz (core / shader / memory)
RAM: 4 GB 800 MHz (I think it is 1600 MHz since it is probably DDR2)
OS: Win 7 Ultimate 64-bit

All in all it serves me pretty good so far. I am able to get 30+ FPS in Far Cry 3 with custom settings (all ultra except Post FX which are on medium) and a resolution of 1440 x 900. But I will probably not be able to enjoy the newest games in 2013 with new consoles coming out and even console ports might prove too much for my PC.

So, in your opinion should I try to upgrade my PC or buy a completely new one?

I am afraid that if I upgrade my GPU (I was thinking about an HD 7870) it would be bottlenecked by my CPU. But that wouldn't be a problem if my motherboard didn't have AM2+ socket and an FSB of 2600 MHz, which I suppose limits my CPU options to certain AMD CPUs with speed only up to 2600 MHz.

So, what should I do?

 

[Hramzyn]

Also, I would probably have to upgrade my PSU. I can't really see what it says on my PSU but I think it is 450 W if i recall correctly.

 

[Outlander_04]

I would build a new computer when you need to

 

[lt_dan_zsu]

I would get a new one. That would probably bottleneck you system. My 965 was bottlenecking my 7950, and my old cpu was decently stronger than yours.