Originally Posted by 47 Knucklehead
I'm not sure, a quick look at the math says that it SHOULD be possible (25mm fan + 60mm rad + 25mm fan) per side is only 110mm on each side of the case. That's a total of 220mm worth of rads and fans to be crammed in the bottom. I believe the case width is 251mm wide. So yes, it is possible to do that, and have MAYBE 31mm of room to spare (I'm guessing a bit less, since there is a door and that and where the fan mounts are have to have some thickness ... so maybe 20-25mm of room to spare?).
My only issue with putting a pair of 60mm thick radiators in "push/pull" down below is that I personally want to have the air blow OUT from both sides. This means that in order to get a good air flow across the radiator from the 12 fans (8 on one side and 4 on the other), the air will have to come in from the upper part of the case, be drawn down, and exhausted out both sides. In order to do this, you will need a cavity in the middle of the lower section of the 900D wide enough to allow air to be drawn down and through. I'm just not sure that 20-25mm will be wide enough with 60mm rads. If you change the rads to 45mm wide, that opens up the center gap to 50-55mm wide ... which SHOULD be enough room to do what I want to do.
This isn't to say that someone else might want to just suck air in on the 480 side of the case, and blow it through the case and have part of that warmer air drawn in to the 240 radiator on the other side and vented out the other side. That SHOULD work, even with 60mm fans, but the problem with that is that the 240 rad will be taking in the warmed air that is being exhausted from the 480 rad. Not the end of the world to be sure, just something that I'd prefer not to do.
Remember Little Devil PC-V8 case: fans are pushing air trough first radiator, then trough the second, no other intake exept front 140 fan...and everything works fine
Case is 251 but side panels grills are thick outside and inside with filtres (no problems with closing, just recessed inside). In best scenario there is about 244 mm inside. PSU is sitting about 32-35 mm from the side, PSU thickness is 86 mm. Sooo... about 123 mm before the PSU. Both 60 mm radiators will fit with push-pull with some freedom between them.
According to the tests, we can push water into back radiator first, then into front, but difference is only little (probably i'll do it, just in case). You are right about everything but we can live with 900D without any science about airflow directions)Specs and FAQ update
Top space: 110 mm (measured by George)
Bottom space: not more than 244 mm, maybe little less
Front space: ~55 mm, maybe little more (front fans are outside and not count)P.S:
I just send PM to George for measuring the bottom space from edge to egde and from the edge to PSU. So we wiill know the exact space inside.Edited by Master Freez - 1/19/13 at 6:55am