Hello. I have several computers at home for the hobby of building PCs. One is an i7 3770 overclocked at turbo speed to 4.3 Ghz with 2133 Mhz rams on a z77 mb. And 2 other i7 2600 overclocked as well by turbo multipliers to 4.2 Ghz. All have GTx 1070s. Are the i7 2600 bottlenecking my cards. Should I upgrade. My young children game casually but I really dont. Are these cpus too old now.