Most 970's have a 250W TDP so 6 (1500W) is way too much.
Also 6 pin power connectors can output 75W and 6+2 connectors can (should) output 150W so having 12 of them is somewhat pointless since you can't utilize all of them (1800W).
I use EVGA SuperNova G2 1300W PSU's and I think they are better than what I have have read about the Cooler Master V1200.
The G2 1300W is cheaper, have 3 years more warranty (10 instead of 7) and have lower ripple levels on the 12V rail.
It's "just" gold, not platinum but the difference in efficiency under standard mining load (70-80%) is negligible:
https://www.techpowerup.com/reviews/EVGA/SuperNOVA_G2_1300/6.html
https://www.techpowerup.com/reviews/CoolerMaster/V1200/6.html
Apparently they are louder than the V1200 but I never heard any of them even under heavy load, or at least much quiter than other components like GPUs.
Look into it and decide for yourself.
Also 6 pin power connectors can output 75W and 6+2 connectors can (should) output 150W so having 12 of them is somewhat pointless since you can't utilize all of them (1800W).
I use EVGA SuperNova G2 1300W PSU's and I think they are better than what I have have read about the Cooler Master V1200.
The G2 1300W is cheaper, have 3 years more warranty (10 instead of 7) and have lower ripple levels on the 12V rail.
It's "just" gold, not platinum but the difference in efficiency under standard mining load (70-80%) is negligible:
https://www.techpowerup.com/reviews/EVGA/SuperNOVA_G2_1300/6.html
https://www.techpowerup.com/reviews/CoolerMaster/V1200/6.html
Apparently they are louder than the V1200 but I never heard any of them even under heavy load, or at least much quiter than other components like GPUs.
Look into it and decide for yourself.
TDP is not real world consumption: my Gigabyte GTX 970 G1 Gaming (insane overclock out of the box: 1430 Mhz) pulls 180W from the wall mining Quark. 145W mining Lyra2v2.
If you really wanted to stay on the safe side, you could always replace 1-2 cards with 950s...
The EVGA looks nice too. But EVGA is a very US-centric company: it seems impossible to find in France. The only one I could find was on amazon.fr for 438. So that's a no-go for me...
Any alternatives?
While TDP does not mean real world consumption it does correlate to it pretty well; with high OC (1520 mhz) a 970 Windforce OC model is pulling 197W mining quark but try mining something like Groestl which will pull 220W even on stock speeds.
With sysnthetic stress tests you can get even closer to the TDP figure:
(source)
And with more and more optimizations for different algos the power consumption will also increase so I personally like to use actual power consumption figures rather than what the advertised specs say.
I live in Central EU and there are 6 retailers selling the Evga PSU in my country and only one of them selling the Cooler Master V1200 so I have to assume there must be some webshops in France too selling the G2 for a reasonable price (260).