I'm really really curious, if i plug in 8+8+6 pins, is the extra 6pin won't be used? What if i decided to reflash the stock vbios and use the LN2 switch am i going to gain anything from the 8+8+6?
No, the "DS" BIOS on all the extreme cards doesn't even have an entry for the 3rd PCI-e power. It is not possible to use with the DS BIOS.
Use GPU-z to monitor perfcaps... You'll never be PWR limited (showing you don't need it) unless you're using furmark (avoid it, BAD for your GPU/VRMs) at extreme levels. 100% of "real world scenarios" (including benchmarks) will not have any perfcaps with the MUMOD BIOS.
Thanks man really appreciate your fast and non-bull**** responses. Last question do you recommend using 750GQ EVGA to supply a fully overclocked Ryzen 7 1700 system?
Well, I am of the opinion that your PSU is one of the most important components of your system, ESPECIALLY when overclocking. I also feel that you don't want to exceed 80% of the PSU's capacity for efficiency and clean power. I don't particularly care for EVGA products in general however it does look like that PSU is of decent quality at first glance. I would say read reviews... 750W is low in my opinion. Although in most cases you'll never reach maximum CPU and GPU power utilization simultaneously I like to plan for that possibility and also to plan for future upgrades. I have seen overclocked CPUs draw a TON of power (and high amps) and I am not personally familiar with Ryzen CPUs however I'd guess that they can pull a lot of power also. Would you be just fine with a 750W... maybe! I am just a "go big or go home" kind of guy