Case fans for Thermaltake V21

[Timtamtum]

I'm looking to run a GTX 1070 and i5-6500 in the Thermaltake V21 case, which AFAIK only comes with the one 200mm intake. Is that fan enough for the rig under load, or should I spring for a couple Noctua fans as well?

 

[Xtergo]

add more fans the key is

front = intake
Back = outlet

There should be more intake then air going out which is considered by many to be the best solution.

 

[Dark Lord of Tech]

Front:
1 x 120mm or 2 x 120m
1 x 140mm or 2 x 140mm
1 x 200mm
Top:
1 x 120mm or 2 x 120mm or 3 x 120mm or 4 x 120mm
1 x 140mm or 2 x 140mm
Rear:
1 x 120mm
1 x 140mm
Bottom:
1 x 120mm or 2 x 120mm
Left / Right Side:
1 x 120mm or 2 x 120mm
1 x 140mm or 2 x 140mm