well your GPU will never need 370W
unless worst case scenario ... remember i had a 290 (which is the same chip ) and a 6300 with a more than substantial OC (aka 4.5ghz CPU and 1100/1550 on GPU ) on a 650W ...
want another one? a Xeon e3-1275v2 (stock sadly ) with 2 GTX 580 Matrix Platinum (pushed to 950/1250 ) on a 700w 80+ gold (InWin Commander III Desert Fox)
funny you used the same PSU calc and got a different result ... ahah oh wait ... you used a 390X ... pahahahahah thanks
if you don't OC then you are more than fine ... read me correctly i said i had a 650W with a 4.5ghz FX-6300 and a 1100/1550 R9 290 and no issue, now if you keep them stock then you can keep that PSU for quite a while before even needing to change it ...
and i would recommend a good bronze like a Fractal design or Seasonic M12II which cost less than a gold label (and on my experience, Gold Bronze, no big difference for an average user, except in the price, and the 2 bronze i recommend are more like silver )
PSU as long as you don't go no name or shady brands like Hantol, Diablotek and RaptoxX, you're fine, even with your Tt Smart 630 (i had one with a X4 760K @4.4 and a R9 270 back in the days )
btw about your link....
no wonder you get different result than me if you change random things like putting a 390X in instead of a 390, oh and you know you can select 5x on a position instead of putting 1x 1x 1x 1x 1x for it
Load Wattage:458 W
Recommended UPS rating:850 VA
Recommended PSU Wattage:508 W
Amperage (combined)
+3.3V+5V+12V
9.5 A9.0 A35.9 A
77 W431 W
+3.3V+5V+12V
9.5 A10.1 A45.3 A
82 W543 W
+3.3V+5V+12V
9.5 A11.6 A45.5 A
90 W546 W
i always used outervision's power calc and it never failed me tho, albeit being a rough estimate of the power needed (unlike manufacturer who tend to exaggerate a bit to avoid worst case scenario or user with shaddy PSU )