Fighting GPU Heat

[thejackalope]

In theory horizontal motherboard is great. In reality though, I noticed my MSI single fan GTX 1060 6GB runs hotter horizontal. It's like a 5 degree difference. The heat pipes I think are just way less effective when the fluid has to fight gravity

[pas008]

1 hour ago, thejackalope said:

In theory horizontal motherboard is great. In reality though, I noticed my MSI single fan GTX 1060 6GB runs hotter horizontal. It's like a 5 degree difference. The heat pipes I think are just way less effective when the fluid has to fight gravity

not sure about that at all, have you changed cases?

like a decade ago, kiddos goofing around knocked my case over antec1200, after that just ran it on its side same with switch810,

figure I'd just go with it and got mm gold digger

 

[thejackalope]

56 minutes ago, pas008 said:

not sure about that at all, have you changed cases?

like a decade ago, kiddos goofing around knocked my case over antec1200, after that just ran it on its side same with switch810,

figure I'd just go with it and got mm gold digger

 

I can do a scientific test. The computer was no my desk horizontal and I moved it to the floor and put it upright and it got about 5 degrees cooler

[pas008]

31 minutes ago, thejackalope said:

I can do a scientific test. The computer was no my desk horizontal and I moved it to the floor and put it upright and it got about 5 degrees cooler

ok

sure

[Vellinious]

Horizontally mounted motherboard. 

[thejackalope]

1 hour ago, pas008 said:

ok

sure

OK I did an experiment and here are the results after 15 minutes running FFXIV looking at a water wheel in the starting town, with fan speed fixed at 2300RPM in MSI Afterburner:

 

Case upright / Room temperature 69.6F / GPU temp 63F

Case sideways / Room temperature 70.2F / GPU temp 67F

 

The difference is only 4 degrees, but my only concern is whether the different distribution of heat in the heatsink is bad. This card has an S shaped heatpipe so presumably one side of the S works normally or better, and the other side is less effective as it's fighting gravity. Does that mean the GPU die is unevenly cooled? If so, is that OK?

[pas008]

1 hour ago, thejackalope said:

OK I did an experiment and here are the results after 15 minutes running FFXIV looking at a water wheel in the starting town, with fan speed fixed at 2300RPM in MSI Afterburner:

 

Case upright / Room temperature 69.6F / GPU temp 63F

Case sideways / Room temperature 70.2F / GPU temp 67F

 

The difference is only 4 degrees, but my only concern is whether the different distribution of heat in the heatsink is bad. This card has an S shaped heatpipe so presumably one side of the S works normally or better, and the other side is less effective as it's fighting gravity. Does that mean the GPU die is unevenly cooled? If so, is that OK?

lol, I was being sarcastic, what about your mobo heatpipes, what about cpu heatsinks then too,

not to mention mining rigs taht have vertical/hanging gpus

 

 

its like the heat rises debate that was started with some case companies

why does vertical airflow down to up have no affect?

 

but you could look farther into it? most things usually are tested on test bench though

 

[thejackalope]

2 hours ago, pas008 said:

lol, I was being sarcastic, what about your mobo heatpipes, what about cpu heatsinks then too,

not to mention mining rigs taht have vertical/hanging gpus

 

 

its like the heat rises debate that was started with some case companies

why does vertical airflow down to up have no affect?

 

but you could look farther into it? most things usually are tested on test bench though

 

Well in my case, nothing else has heatpipes. 

 

There are actual studies on this topic and it seems to be generally known that heatpipe orientation matters https://www.qats.com/cms/wp-content/uploads/2015/03/Qpedia_Aug09_How_wicks_and_orientation_affect_a_heat_pipes_performance.pdf

 

If it doesn't matter, why even have the heatpipes? Can't a simple aluminum heatsink cool a GPU properly?

[pas008]

13 minutes ago, thejackalope said:

Well in my case, nothing else has heatpipes. 

 

There are actual studies on this topic and it seems to be generally known that heatpipe orientation matters https://www.qats.com/cms/wp-content/uploads/2015/03/Qpedia_Aug09_How_wicks_and_orientation_affect_a_heat_pipes_performance.pdf

 

If it doesn't matter, why even have the heatpipes? Can't a simple aluminum heatsink cool a GPU properly?

Fin orientation isn't included also

This just talks about radius 

Aren't major differences is beyond throttling of silicone?

 

 

[thejackalope]

18 hours ago, pas008 said:

Fin orientation isn't included also

This just talks about radius 

Aren't major differences is beyond throttling of silicone?

 

 

They looked at the effectiveness of heat pipes at different orientations. All of the wick types were less effective at at certain orientations

[thejackalope]

How come this thread got re-titled?