Originally Posted by kh90123
Hey guys I am getting the H70 to replace my Thermalright Ultra 120, and since I used two fans on my Thermalright (Delta fan, max 5200rpm, and an Ultra Kaze fan, 3000 max rpm), if I were to use those two fans on the radiator for push pull configuration, which one is better to 'push', and which one is better to 'pull'?
Is it not advisable to use fans with different rpm on heatsinks/radiator?
Which configuration would be better for my case, rear intake/rear exhaust, considering that I have two crossfire 6850 dumping heat into the case, and also the option to change the direction of airflow of a 20mm side panel fan?
RPM is not as important as the static pressure value. I would say which ever fan has the better static pressure put that as the push and the other as the pull. I have different fans as many people here do and have no issues. Shoruds will help if you have room even more to remove dead spots.
It depends on what all else is going on as far as location of intake or exhuast. if you have the tower in a corner or some tight place and you still have a case fan exhausting and PSU exhausting out the back I dont think you would see much of a difference between intake and exhaust configurations from the rear... the best is always to do an intake from the front, that usualy has the cool air with out any thing else dumping.
What do you use your PC for? and when you doing what ever you do are the 6850's running hot? what are their temps? I would say top exhaust and get an extra rear exhaust like this http://www.newegg.com/Product/Produc...82E16811995027
(out of stock but find something similar) http://www.newegg.com/Product/Produc...0Case%20Cooler
and have it exhaust out the top.