Top AND front mounted radiators

[I Am Zac]

Hello I have the thermal take v71 case and I already own a 420mm rad on top exhaust and a 360mm in front intake, was curious if I should keep the front mounted rad?? Or will one 420mm support my build
Pump
2x r9 390x's
Mother board vrms
South bridge
Cpu fx 8350
Will be doing mild over clocking on the cpu

 

[Lutfij]

First and foremost it's a generic rule to have 1x120mm of radiator surface area to cool each heatware you have. Though in hindsight, the watercooling sticky(linked in my sig space) has an in depth chapter explaining your TDP and thermal dissipation from your radiator. You might also want consider your fan's orientation as well as their specs since high rpm low static pressure fans often tend to need to work overtime to produce favorable temps as opposed to lower rpm, high static pressured fans.

Overradding will allow you to have a greater headroom in terms of cooling performance, overclocking and perhaps maintain a lower noise profile as opposed to lower radiator surface area.

My verdict, keep them as they are, but I think your fans would need some looking into.