Megahalems orientation - facing back or up?

[MadMan007]

Hi, just looking for some info if anyone has seen a direct comparison. I know the Megahalems is recommended to exhaust out the back of the case, obviously a straight shot out the exhaust is better. But I'm wondering if anyone has used it exhausting upwards toward the top of the case or PSU and compared temps? I'm wondering if the recommendation is for exhausting purposes or because the heatpipes work a lot better when it's aimed toward the back of the case. In some cases (Antec P180) there's a top exhaust too and that's why I wonder..

[PsYcHoNo0b727]

I have seen some ppl use both orientations but IMO, I would use it blowing air to the exhaust. I would think that the heat from a GPU generated a couple inches down might effect the cooling but not enough to change anything drastically.

Also, it depends on wether or not the cooler will fit which way, I know for mine it is a very very close fit with my RAM.

[MadMan007]

Yes, of course out the back is better, it's recommended and common sense My main focus was on whether people know, preferably from testing, if heatpipes work better in one orientation or another. Out the back = vertical heatpipes, out the top = horizontal heatpipes and I figure that could affect their operation, I don't know if Polimatech and others recommend an orientation because of case airflow or heatpipe function. (I will email them.) It could apply to any similar design tower heatpipe cooler really.

[chew*]

Originally Posted by MadMan007

Yes, of course out the back is better, it's recommended and common sense My main focus was on whether people know, preferably from testing, if heatpipes work better in one orientation or another. Out the back = vertical heatpipes, out the top = horizontal heatpipes and I figure that could affect their operation, I don't know if Polimatech and others recommend an orientation because of case airflow or heatpipe function. (I will email them.) It could apply to any similar design tower heatpipe cooler really.

For heatpipes to work the most effeciently heatsink must be upright, etc case laying on its side.

[dro]

Up is only better when you have a vent place on top to similarly exhaust out the air
Hot air rises up too

[MadMan007]

Originally Posted by chew*

For heatpipes to work the most effeciently heatsink must be upright, etc case laying on its side.

Well yeah, I *did* know that But barring that, since most cases are tower-style, I'd like to know if one orientation of heatpipes is is known to be inherently better exhaust aside.

[chew*]

Originally Posted by MadMan007

Well yeah, I *did* know that But barring that, since most cases are tower-style, I'd like to know if one orientation of heatpipes is is known to be inherently better exhaust aside.

Aside from the best operating position I would say it's case dependant.

For cases with top exhaust and bottom mounted PSU's i would say fan blowing up.

All other applications fan blowing out rear exhaust.

[dan7777]

Originally Posted by chew*

Aside from the best operating position I would say it's case dependant.

For cases with top exhaust and bottom mounted PSU's i would say fan blowing up.

All other applications fan blowing out rear exhaust.

ive got this cooler and the haf 932 what fans would be best for the cooler ? also mounting which way would be best useing this case ? cheers

[chew*]

Originally Posted by dan7777

ive got this cooler and the haf 932 what fans would be best for the cooler ? also mounting which way would be best useing this case ? cheers

Haf I would probably face it up as long as it doesn't interfere with your ram configuration/ dimm slots.

I prefer sanyo denki fans for max OC and noise tolerance, however you will have to rubber band it on, the clips are to small.......

I use a server grade high CFM low DBA delta 1600 rpm delta for everyday use however.