Corsair 700D Airflow

S

Stratigas

Weaksauce
Joined
Dec 5, 2010
Messages
74
Hey guys,

Just wondering if I should change how my fans are configured in my 700D.

I've replaced all of the stock 140mm fans with some low rpm NZXT white fans. They are all intake, one for the HD, one in the middle of the chasis and one on the back. I have my H70 mounted with 2 fans in push/pull in the farthest back spot sucking up the cool air from my back intake fan and exhausting it all out the top. I've got one other fan on the top exhausting, with the middle empty as it won't fit with my H70 there.

MSPaint example:
93973547.png
 
I don't understand what you have been thinking with this configuration?

Using the back fan as intake instead of out, reduces the out pressure on top. Since the H70 is cooling the CPU, you need airflow over GPU, NB/SB and HDD. If you configure the bottom fans for more airflow in, while using the top fans and back fan for increased pressure out, you will probably have a better airflow. Bottom fans can suck the colder air from the floor and in addition, its further away from ear, so you can have higher RPM -> noise.
 
Should I use the back fan as exhaust then? My thought process was to suck cool air in from outside to have it sucked up through the rad and out the top. The back fan is currently also blowing the cool air over the back of the GPU.
 
Stratigas said:
Should I use the back fan as exhaust then? My thought process was to suck cool air in from outside to have it sucked up through the rad and out the top. The back fan is currently also blowing the cool air over the back of the GPU.
Click to expand...

Yes. I would have used the back fan as exhaust. By dedicating all the top and back fans into exhaust, you will create a much better negative air-pressure in this cabinet. Using the back fan as exhaust will work against the negative air-pressure and reduce efficiency.

The GPU should get air from bottom, while the hot air should be removed faster, so heat doesn't accumulate. In the long run, during longer gaming sessions, you'd be better off when air is continuously changed inside your cabinet. :)
 
Stratigas said:
Thanks. I'll swap it around now...
Click to expand...

Do that. :) I have the 5870 PCS+ too and have noticed that it hates airpockets. It also dumps hot air into the cabinet. You don't notice it before you have been gaming a while. Then it suddenly just gets hotter and hotter. Its the temps after an hour or two of demanding games you need to adjust your airflow after, since its the accumulation of heat which poses the biggest threat to system instability due to temps.
 
Swapped and looking good! Had to rotate the fan 3 times before it stopped clicking and got re-balanced, lol.
 
You must log in or register to reply here.
Back
Top