Enthoo Pro GPU Cooling question

[Brama]

I am getting the enthoo PRO with NZXT Kraken X61 106.1 CFM Liquid CPU Cooler and the using the two included fans the front 200mm. and back 140mm.

 

I will have a 4790k and be using 2x MSI GTX 970s and I plan to over clock the CPU and GPU.

 

I was thinking of getting one more fan to help with GPU cooling. I noticed Enthoo Pro can have fans mounted in the HDD Cages in a Review I was watching. I am unsure of the size tho. the Review didnt say or atleast I can find where they said it. it was a long review. And I am reading from the site correctly it says 2x 120mm HDD. But do I have to use 120mm? Cause I use 1 140mm instead? and if I put a fan in the position will it help with GPU Cooling and cooling period. or is it not even really neccessary.

 

I know I should probably upgrade the stock fans, But I am already slightly over budget.

[Sadistic_Potato]

If the HDD cages support 140mm fans, then you can do that. However, if it's not wide enough, then you'll have to stick to the 120mm fans. 

[spwath]

I am getting the enthoo PRO with NZXT Kraken X61 106.1 CFM Liquid CPU Cooler and the using the two included fans the front 200mm. and back 140mm.

I will have a 4790k and be using 2x MSI GTX 970s and I plan to over clock the CPU and GPU.

I was thinking of getting one more fan to help with GPU cooling. I noticed Enthoo Pro can have fans mounted in the HDD Cages in a Review I was watching. I am unsure of the size tho. the Review didnt say or atleast I can find where they said it. it was a long review. And I am reading from the site correctly it says 2x 120mm HDD. But do I have to use 120mm? Cause I use 1 140mm instead? and if I put a fan in the position will it help with GPU Cooling and cooling period. or is it not even really neccessary.

I know I should probably upgrade the stock fans, But I am already slightly over budget.

Stock fans are good

Remove the hard drive cages you don't need, that will improve cooling.