Bitcoin miners cooling

[Mtsimmer]

Hello,

I decided to try mining some Bitcoins few days ago and I mined for 24 hours with my 1070 it get to 69 degrees C

Which is acceptable in my opinion , today I tried to add a second GPU (GTX 660) and I encountered a disappointment 

All the cards are running over 70 which is too high (in my opinion to run them 24/7),after previous thinking and some ideas

I think I should add some case fans but my primary deliberation right now is which fans should I buy If I want pretty quite

Operation but in the mean time effective one .

I currently have : 

Antec gx900 and the 3 Included fans

Both of my cards are not reference design

The idea I had until now is switching 2 120 fans with 2 140 and setting the 2 120 one at the front and another one at the rear or on the button

 

THANKS FOR HELP!!!

[Himommies]

If you mining birtcoin just buy a ASIC

[Mtsimmer]

I was more about making everything inside my case by adding fans , I read that the most important thing for 2 GPU cooling is Airflow so what is the best option I have for Air flow (Corsair AF fans?) . btw I will try opening my case and may be setting a table fun Thanks!