Originally Posted by TJ241
Alrighty, everyone. So almost all my parts have come in, but after doing some research, I've found I can easily fit a second 240mm rad in the bottom of my cosmos ii. So here's my question now:
If I add a second 240mm, will the two pumps I have be enough, or would I need to purchase a 3rd pump to handle the 4 rads and 4 blocks (3x gpu + CPU). Also, if I were to do this, would I want the third pump to immediately follow the first two, or place it mid-line? And finally, would a 4th rad even help in my loop or would the benefits not outweigh the negatives?
Thanks again for all the help.
Updates from last post: picked up the biocide, also got some uv green dye and 2x 12" uv cold cathode lights, ditching the kill coils, wiring up custom LEDs, and finally wiring up custom ATX cables (as much as I can, might only do the 3 gpu cables and the 24pin main power cable, the rest is hidden and after only 2 gpu cables, my fingers are wrecked). Ive also picked up an external hdd enclosure, so will be mounting 140mm rad up front. Will be green/white themed, will post pics when done.
Unfortunately, my windowed side panel won't be in for another 10 weeks, but with the panel off, the general idea will be there.
Unless you for some reason decide to add the B.I. GT Stealth to your loop then radiators adding resistance shouldn't be much of an issue. The inside of the radiator usually has a LOT more area than the G1/4" barbs that connects to it, so it creates very little resistance. The GT Stealth is kind of a wild card when it comes to radiators, it has VERY narrow chambers, does not have a normal "U-Flow" setup, but instead has the two pass go on top of each other instead of side by side, and for some reason has a 30FPI split fin setup which is brutal for air resistance.
Anyways, long story short you could add another 240mm rad EASILY without having problems with a pump.
You really only need to worry about pump restriction when considering two things:
1: Tubing, as it's fighting against gravity.
2: Waterblocks, as they typically create quite a bit of flow restriction.