Question Please. New to This.

[VernonCM]

I recently purchased the COSMOS S tower and the Swiftech H20-220 Apex Ultima

Links here:
COSMOS S:
http://www.frozencpu.com/products/7604/cst-739/Cooler_Master_COSMOS_S_Aluminum_Alloy_Full_Tower_C hassis_w_Custom_Window_RC-1100-KKN1-GP.html?id=kthWLrW5&mv_pc=1912

Swiftech H20-220 Apex:
http://www.frozencpu.com/products/8411/ex-wat-140/Swiftech_H20-220_Apex_Ultima_Liquid_Cooling_Kit_Universal_Mount .html?tl=g30c321s818&id=kthWLrW5&mv_pc=1763

The problem that I am running in to is the radiator positioning. If I position the radiator to the rear fan mount, it will fall over the GPU's and I will be unable to plug in the monitor.

So, my question is will mounting the radiator to the top of the tower vs the back allow for adequate heat dispersion? Will gravity place undue resistance to the pump? And, will the system be more likely to leak? Has anyone else had this problem?

Also, I would like to, if at all possible not modify the case any way as the contours of the case are sexy and I would like to keep it that way.

Thanks for your help. Sorry for the misspellings but I have not yet installed Office on this computer and I am a very poor at spelling.

[Spawn-Inc]

with the rad you got you can have it in any position. on top or at the back both will be fine in terms of heat, just make sure the fans are not blowing into your case, but away.

that is one of the best 12v pumps there is so no worries about it not handling it. and what goes up must come down.

[dealmaster]

I beg to differ on the fan direction. I tested with my fans on my top mounted MCR320 blowing into the case and sucking air out of the case through the radiator and found the best results were blowing outside air through the radiator into the case.

The object of watercooling is to let the water collect and dissipate the heat, and the air cools the water. Thus, you want the coolest air possible blowing across the radiator fins to dissipate as much of the heat as you can. Blowing air into the case may increase your case temps slightly, but it will produce lower water temperatures and thus better temperatures for anything that's watercooled.

[Spawn-Inc]

I beg to differ on the fan direction. I tested with my fans on my top mounted MCR320 blowing into the case and sucking air out of the case through the radiator and found the best results were blowing outside air through the radiator into the case.

The object of watercooling is to let the water collect and dissipate the heat, and the air cools the water. Thus, you want the coolest air possible blowing across the radiator fins to dissipate as much of the heat as you can. Blowing air into the case may increase your case temps slightly, but it will produce lower water temperatures and thus better temperatures for anything that's watercooled.

ya thats true, but i was going on the assumption that most cases have intake fans on the front and side panel and exhaust fans on the top and back. so you would be pushing against then other fans, but then again you can always flip them or remove them. also heat rises so you will be pushing against that. but on the other hand its not that hard.

[Conumdrum]

I see your point Spawn. But we can't assume the OP knows that.

Rule one: res/Tline before pump
Rule two:(well darn important) Coolest air to rad.

It can make a diff of more than a few C, depending on the OP's usage.

OP: Put the rad farther out the back to give PCI connection room. Make brackets out of simple stuff, seen it done lots of diff ways. Take your time looking at lots of rigs, you'll figure it out.

[dealmaster]

ya thats true, but i was going on the assumption that most cases have intake fans on the front and side panel and exhaust fans on the top and back. so you would be pushing against then other fans, but then again you can always flip them or remove them. also heat rises so you will be pushing against that. but on the other hand its not that hard.

That's a good point, but I'd assume that anyone contemplating building a custom watercooling loop would know how to set up airflow in their case, or at least make fans face in the right direction. The force of even a small fan greatly outweighs air movement via convection, so that's a non-issue.