Pro/Forums - View Single Post - first time watercooling.. temps too high???

Long Haired Git · 08-19-2005, 01:29 AM

I don't have the CW or PQ graphs for those components, so can't judge.
However, keep in mind that you used to have a fair bit of air flow around the CPU socket, and often the thermal probe for the CPU is impacted by this. So, grab a fan and point it at the CPU socket, and see if the temps drop.

BTW, did you do a flow rate test and hence know the approx flow rate? I am gobsmacked most people don't do this...

Next, I've approximated your rig using:
CSP Mag, 1.2m of 1/2" tubing, Thermochill 120.2, LRR G4
and I get 5.6 LPM and an air-to-CPU deltaT of 13.374 degrees for a 70W CPU.
That's approximately 0.19 degrees per Watt.

Yes, the TDX is more LRR White Water than LRR G4, but my simulator (called the Approximator) is not yet handing the multiple outputs of the LRR.

Anyhoo, according to you ambient = "23.8 C, right now idle i'm still getting 28C-29C".
Lets call it 28.8 and 23.8, which means 5 degrees off ambient.

So, according to my model, your CPU consumes approximately 25W at idle.

08-19-2005, 01:29 AM	#6
Long Haired Git Cooling Savant Join Date: Jan 2003 Location: Sydney, Oz Posts: 336	I don't have the CW or PQ graphs for those components, so can't judge. However, keep in mind that you used to have a fair bit of air flow around the CPU socket, and often the thermal probe for the CPU is impacted by this. So, grab a fan and point it at the CPU socket, and see if the temps drop. BTW, did you do a flow rate test and hence know the approx flow rate? I am gobsmacked most people don't do this... Next, I've approximated your rig using: CSP Mag, 1.2m of 1/2" tubing, Thermochill 120.2, LRR G4 and I get 5.6 LPM and an air-to-CPU deltaT of 13.374 degrees for a 70W CPU. That's approximately 0.19 degrees per Watt. Yes, the TDX is more LRR White Water than LRR G4, but my simulator (called the Approximator) is not yet handing the multiple outputs of the LRR. Anyhoo, according to you ambient = "23.8 C, right now idle i'm still getting 28C-29C". Lets call it 28.8 and 23.8, which means 5 degrees off ambient. So, according to my model, your CPU consumes approximately 25W at idle. __________________ Long Haired Git "Securing an environment of Windows platforms from abuse - external or internal - is akin to trying to install sprinklers in a fireworks factory where smoking on the job is permitted." (Prof. Gene Spafford) My Rig, in all its glory, can be seen best here AMD XP1600 @ 1530 Mhz \| Soyo Dragon + \| 256 Mb PC2700 DDRAM \| 2 x 40 Gb 7200rpm in Raid-0 \| Maze 2, eheim 1250, dual heater cores! \| Full specifications (PCDB)