Is this a good power supply?(in general)

[Ramore]

The EVGA SuperNova 850w B2 <- this
And also with this?
-Case coolermaster n400.
-motherboard BiostarH61MLV3
-intelcore i5-3470
-Gtx 970 g1 gaming from gigabyte.

 

[B Beast]

Evga psus are real giod but its too much for your system a 650w would be good enough to leave you room to upgrade

 

[Archaic59]

Any of these would be fine for your system:

http://pcpartpicker.com/parts/compare/antec-power-supply-hcg520m%2Cseasonic-power-supply-m12ii520bronze%2Cxfx-power-supply-xfxts550w/

 

[Dark Lord of Tech]

The EVGA SuperNova 850w B2 <- this
And also with this?
-Case coolermaster n400.
-motherboard BiostarH61MLV3
-intelcore i5-3470
-Gtx 970 g1 gaming from gigabyte.

Yes the EVGA 850w B2 is made by the BEST = Super Flower Great choice.

 

[Ramore]

The EVGA SuperNova 850w B2 <- this
And also with this?
-Case coolermaster n400.
-motherboard BiostarH61MLV3
-intelcore i5-3470
-Gtx 970 g1 gaming from gigabyte.

Yes the EVGA 850w B2 is made by the BEST = Super Flower Great choice.

Is a supernova 750 g2 better than this? is more efficient (80 gold plus) but can the wattage handle future upgrades, like gtx 980, 4th gen processor, water cooling? thanks btw for fast response.

 

[Dark Lord of Tech]

The EVGA SuperNova 850w B2 <- this
And also with this?
-Case coolermaster n400.
-motherboard BiostarH61MLV3
-intelcore i5-3470
-Gtx 970 g1 gaming from gigabyte.

Yes the EVGA 850w B2 is made by the BEST = Super Flower Great choice.

Is a supernova 750 g2 better than this? is more efficient (80 gold plus) but can the wattage handle future upgrades, like gtx 980, 4th gen processor, water cooling? thanks btw for fast response.

Yes it can and it's one of if not the best 750w on the market , made by Super Flower , based on the award winning Leadex Gold series.