What is the bottleneck on my system?

LaMaestro

Honorable
Dec 26, 2012
58
0
10,660
Hello, I have a custom built system with following specs:

- 750W PSU
- 8GB RAM
- 1TB WD HDD
- 128GB Samsung Evo SSD
- Intel i7 2600
- GTX 680
- ASRock Z77 Extreme6
Everything is built inside NZXT Switch 810 case

CPU is running a stock fan since overclocking is not an option for non-K version.
The GPU is slightly overclocked but still runs at good temperatures due to excessive air cooling on the inside of the case.

I would like to know what should I upgrade first in this set up to avoid further bottlenecking new components. Atm I am considering buying GTX 970/980 but maybe I should invest in a new CPU or RAM?

Cheers