post #11 of 11
Quote:
Originally Posted by HiTekJeff View Post

I was looking to get some feedback from those that have used BOTH rigid tubing (acrylic, PETG) VS soft tubing (Primochill Advanced LRT) for temperatures.

What I did is went from 3/4 OD soft tubing to 13mm rigid tubing and am concerned about some of the temps I am seeing now as a result. I'm getting a good +5-7C increase moving from the 3/4 OD soft tubing to the 13mm rigid.

Keep in mind though my situation is quite different than most due to my workstation and the type of software I use. It's much more demanding than any known game could be as the high-end 3D modeling programs I use flood both CPUs and their cores, along with the GPU.

Most of the testing I have seen have been in really nice systems, mainly more for gaming and such, rather than tested for rendering. That's why I was not expecting to see that much of a change, even though it was a smaller tube. I'm using the same coolant, pump, etc. only difference is the rigid tubing now. Others have claimed hardly no change between 13mm and 16mm tubing or going from soft to rigid. It may just be the tubing size variance. However, I am wondering if that's because it's never been heavily tested with something that floods the CPU and GPU the way these programs do? I just don't think I can live with those results due to the intense nature of the work I do and how I use my workstation. Keeping it as cool as I can is very important so my renders, which can takes several days, don't crash.

If anyone has some input or can share their experience that would be nice to hear.

Well flex tubing absorbs coolant to keep it from drying itself out, and given the airflow in rigs it gets evaped out of the tube so flex tubing has that going for it over rigid tubing. The difference in thermals that should actually produce though is absurdly low, nothing to the extent you're seeing. Do you have coolant flow rates before and after the acrylic? There might be a bend somewhere that maybe kinked and is causing extensive flow restriction.

-Z
Quote:
Originally Posted by gregory121295 View Post

Tubing has such little surface area and low heat conductivity that it has negligible effect on temperature. The ONLY effect of going to a lower diameter tubing would be a higher water pressure all things being equal and that might help a little bit if your blocks are restrictive. Realistically though the difference is probably variance in mounts.

Flex tubing dries out, and absorbs coolant from the loop to stay moist essentially creating an evap cooler, mind you an incredibly inefficient one but the physics are there non the less . That will cause a slight difference in thermals, but nowhere near what OP is seeing.

-Z
The Laboratory
(11 items)
 
  
CPUMotherboardGraphicsRAM
AMD FX-8350 Vishera 8-Core 4.0GHz Asus Crosshair V Formula-Z Radeon R9 290X Generic 1333MHz R.A.M. 
Hard DriveOptical DriveCoolingOS
Wester Digital 5400RPM HP CH20L "The Russian Winter" Windows 8 
KeyboardPowerCase
Steel Series Merc Fatal1ty 1000Watt PSU DIY Rig 
  hide details  
Reply
The Laboratory
(11 items)
 
  
CPUMotherboardGraphicsRAM
AMD FX-8350 Vishera 8-Core 4.0GHz Asus Crosshair V Formula-Z Radeon R9 290X Generic 1333MHz R.A.M. 
Hard DriveOptical DriveCoolingOS
Wester Digital 5400RPM HP CH20L "The Russian Winter" Windows 8 
KeyboardPowerCase
Steel Series Merc Fatal1ty 1000Watt PSU DIY Rig 
  hide details  
Reply