Originally Posted by Hi-Jack
Don't forget the m³/h is an important factor to keep the chipset cool.
I've 8 papst fan at home, these are one off the most silent coolers you can find but offcourse it will suffer some cooling performance.
As I looked up the cooling performance of the standard Xtreamer fan = 1.52 CFM~2.85CFM (7000~13000)
This gives for the standard fan : 2.58-4.84m³/h
Papst fan: 3.2m³/h
I was thinking of mounting the PAPST fan to draw cool air into the unit. Reversing the current fan makes only more noise...
Even with tose details, having the fan run on low / medium or highest roation speeds should reduce the 4.84m³/h max number. The 3.2m³/h then comes close to the "medium" setting of the fan or am I interpreting this wrong?
It is recommended to have medium rotation speed running for HD playback and with the current fan low means 7000 RPM, medium 10.000RPM and high 13.000RPM (i imagine these numbers only). Isn't this reference also intended for blowing air inside the unit instead of getting hot air out...? I believe I can manage to run with the cooler...
from PAPST and if i blow up my unit, well... xtreamer will have to send me a new one...
What do you think?
I've just checked the Xtreamer cooling design on the following images.
It is even worse then I thought.
First of all, if you want a nice cooling performance you need to have good airflow.
Some basic things for good cooling.
- Get cold air into the case. As you know cold air is heavier then warm air so place the cooler at the lowest point of the device and let it blow cold air inside the unit.
- Get the HOT AIR out. Hot air will rise, so foresee a whole or a cooler at the top of your unit. Blowing the hot air out.
The best way of getting hot air out is at the top of your unit and not in the sideway at the top of your device!
- Place your heatsink or part in such way that it can be cooled properly. Don't obstruct the whole airflow or misplacing the fan.
If I compare these points with the Xtreamer unit then the only outcome I can say is ... design flaw or they wanted the smallest HD device that makes the most noise
The fan is just placed for fresh air. There will be no airflow since the ventilation holes are placed sideways on the top of the unit. Blocking good airflow.
The most important thing they forgot is the airflow for cooling the heatsink. There is no airflow and I bet that this plastic case at the heatsink side will get pretty hot.
I would try some minor modifications first.
- Replace the fan with a silent fan. (this doesn't improve cooling, but it does save your precious ears
- Remove the top from the xtreamer or mod the top so that the airflow can be optimized.
- Get some thermal paste and put it between the heatsink and cpu.
Then I would compare the temps inside the case & at the heatsink when playing mkv's for an hour.
If this isn't sufficient then mount the hardware in another case
One other option I can see is that when you don't use a HDD, place a 60mm papst fan at the HDD place. You can drill holes into the side of your unit so the fan will be screwed against the sideplate. (let the fan blow the hot air out of your unit).
The 60mm fan will create such an underpressure into the unit, resulting into an airflow that will cool whole your device. Hot air doesn't have a change to rise as it will be sucked outside.
But thats my view