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Best Thermal Paste Application Method on direct contact heatpipes? - Page 2

post #11 of 18
Quote:
Originally Posted by Bluescreendeath View Post

So what you're saying is generally less is more, but in case of HDTs, because of the extra aluminum fillings, more would be good?

Maybe I should just switch back to the Scythe Big Shuriken 2 where I won't have this HDT problem (as it has a flat base) and just deal with the loss of a RAM slot?

I haven't done any comparisons yet. but I presume it'll be much better even if I screw up TIM application w/ too much or too little on the Scythe?
I tested Thermalright Macho Direct with TIM only on heatpipes and with TIM filling between heatpipes. The difference was hard to record, but as best as I can tell doing 3x installs I got 0.5c better temps with TIM just on heatpipes.
post #12 of 18
Thread Starter 
Quote:
Originally Posted by doyll View Post

I tested Thermalright Macho Direct with TIM only on heatpipes and with TIM filling between heatpipes. The difference was hard to record, but as best as I can tell doing 3x installs I got 0.5c better temps with TIM just on heatpipes.

Hmmm, so no difference.

I just realized Haswell's core die is a rectangle that goes north-south. The way I installed the CM M4 cooler, however, was have the heat pipes layout oriented east-west. So the haswell die is not perpendicular to the layout of the individual HDT. Could this play a large role in temperatures?

I've attached a picture:

Edited by Bluescreendeath - 10/4/16 at 1:59pm
post #13 of 18
Thread Starter 
So if this is a big factor...that means HDT are harder to install than I thought. Reorient or just put back the Scythe with a smooth base and not deal with this HDT headache? Or would orientation for copper base non-HDT matter too (if it's a square)?
post #14 of 18
Quote:
Originally Posted by Bluescreendeath View Post

So if this is a big factor...that means HDT are harder to install than I thought. Reorient or just put back the Scythe with a smooth base and not deal with this HDT headache? Or would orientation for copper base non-HDT matter too (if it's a square)?
Orientation of CPU die and heatpipe can and does make a difference in temps, but so does orientation to gravity. But the difference is usually very little .. less than 1c. There is no logic in worrying about 1c .. or even 2-3c warmer CPU temps because of cooler orientation unless you know your cooler intake air temp and room air temp. Very very few people know this difference, and when both CPU and GPU are under load the cooler intake air temp is usually 5-25c above room temp. 5c is good, but 10-25c warmer air means 10-25c hotter CPU temperature .. and with a little planing and airflow management it is not hard to get cooler intake to room difference to 5c or less. So, which is more important; 1-2c cooler orientation difference or 5-20c air temperature difference? tongue.gif
post #15 of 18
Thread Starter 
Quote:
Originally Posted by doyll View Post

Orientation of CPU die and heatpipe can and does make a difference in temps, but so does orientation to gravity. But the difference is usually very little .. less than 1c. There is no logic in worrying about 1c .. or even 2-3c warmer CPU temps because of cooler orientation unless you know your cooler intake air temp and room air temp. Very very few people know this difference, and when both CPU and GPU are under load the cooler intake air temp is usually 5-25c above room temp. 5c is good, but 10-25c warmer air means 10-25c hotter CPU temperature .. and with a little planing and airflow management it is not hard to get cooler intake to room difference to 5c or less. So, which is more important; 1-2c cooler orientation difference or 5-20c air temperature difference? tongue.gif


Good point. I won't worry about the HDT orientation then. I think I'm just going to put the Scythe back in since it seems to have a better fan that can draw more air from the intake fans. Thanks!
post #16 of 18
Quote:
Originally Posted by Bluescreendeath View Post

Good point. I won't worry about the HDT orientation then. I think I'm just going to put the Scythe back in since it seems to have a better fan that can draw more air from the intake fans. Thanks!
If you want to experiment a little try mounting the fan pulling air up out of Scyte instead of pushing down inward motherboard. This often gives better temps. Here is link to why: http://www.overclock.net/t/1491876/ways-to-better-cooling-airflow-cooler-fan-data/0_20#post_22323763
post #17 of 18
Thread Starter 
Quote:
Originally Posted by doyll View Post

If you want to experiment a little try mounting the fan pulling air up out of Scyte instead of pushing down inward motherboard. This often gives better temps. Here is link to why: http://www.overclock.net/t/1491876/ways-to-better-cooling-airflow-cooler-fan-data/0_20#post_22323763

Thanks. Does this only work for the Scythe or also other heatsinks with removeable fans? (eg. the GeminII m4)?

I have about an inch of clearance above 1/3 the cooler because my optical drive is mounted above it. (the other 2/3 is clear of the optical drive). My case is a Grandia GD05, so I have 2 side 120m intake fans blowing air in and 2x80mm rear fans blowing air out.

Do you have temperature benchmarks or comparisons for blowing air down/blowing air up?
post #18 of 18
Quote:
Originally Posted by Bluescreendeath View Post

Thanks. Does this only work for the Scythe or also other heatsinks with removeable fans? (eg. the GeminII m4)?

I have about an inch of clearance above 1/3 the cooler because my optical drive is mounted above it. (the other 2/3 is clear of the optical drive). My case is a Grandia GD05, so I have 2 side 120m intake fans blowing air in and 2x80mm rear fans blowing air out.

Do you have temperature benchmarks or comparisons for blowing air down/blowing air up?
Any pancake cooler that the fan can be turned over to pull instead of push, but it also depends on how your case is flowing air. Only way to know for sure is try it. On open bench testing I usually see 4-8c better temps on pancake cooler with fan pulling rather than pushing, but that's on my test system, not your case build.
With side intake over the CPU fan pushing toward motherboard is probalby best.
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