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Is 73C too high for an EK Thermosphere and 7950?

post #1 of 3
Thread Starter 
Hi guys, I just installed a Thermosphere on my Saphire 7950 and the temps are quite a bit higher than I expected. Furmark is taking the gpu temperature up 73C and demanding games are running in the 60s. Ambient temperature is 26C. Both cpu and gpu idle around 34 degrees and within 1 degree of each other. The idle temp doesn't seem bad but seeing a 40+ degree ambient/core difference is concerning. My externally mounted reservoir gets much warmer while gaming than before adding the gpu block so I know a good amount of heat is getting transferred to the water.

System info: Swiftech H240X, FX8320 at 4.3ghz under the Apogee XL block. 7950 at stock speeds under the Thermosphere.

It goes Pump/radiator -> GPU -> CPU -> Reservoir -> Pump/radiator. I used the shim required for the 7950 and the correct R600 mounting bracket with EK's thermal paste. I have a little of Swiftech's thermal paste and some arctic silver 5 I can try if the EK paste isn't any good. I also have two 120mm fans mounted directly under the card blowing on it to cool the memory and VRM's.

I think that's all the relevant information. I have 2 temp sensors I can get in the loop at any place if it is beneficial towards troubleshooting. My cpu temps were good before the gpu block and still are after adding it so I doubt restriction/flow rate is a problem. I realize both my cpu and gpu can be power hungry for a single 280mm radiator but the furmark temperatures I'm stating are under gpu load only.

I guess my question would be is this normal or should I remove the block and attempt to reinstall it?
Edited by whosloosin92 - 1/28/16 at 9:48pm
Paradigm
(14 items)
 
  
CPUMotherboardGraphicsRAM
FX-8320 Asus M5A97 R2.0 Saphire 7950 Boost 14gb 1333mhz DDR3 
Hard DriveOptical DriveCoolingOS
OCZ Arc 100 240gb + WD Caviar Black 1TB LG 8X WH08LS20 Bluray Burner H240X + EK Thermosphere Windows 7 Ultimate 64-bit 
MonitorPowerCase
Asus VE245 Corsair GS700 CoolerMaster Storm Stryker 
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Paradigm
(14 items)
 
  
CPUMotherboardGraphicsRAM
FX-8320 Asus M5A97 R2.0 Saphire 7950 Boost 14gb 1333mhz DDR3 
Hard DriveOptical DriveCoolingOS
OCZ Arc 100 240gb + WD Caviar Black 1TB LG 8X WH08LS20 Bluray Burner H240X + EK Thermosphere Windows 7 Ultimate 64-bit 
MonitorPowerCase
Asus VE245 Corsair GS700 CoolerMaster Storm Stryker 
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post #2 of 3
I have no experience with the EK Thermosphere, but I do have with the universal Supremacy line.. It sure feels a bit high.

I used the Supremy in the following GPUs: GTX 280, GTX 550 ti, GTX 580 and GTX 770. None of them passed the mark of 60ºc during burning tests.
Since thermosphere is a revised block, making use of better jetplates and better multi-gpu configuration, I doubt that it would perform worse than their older block.

I would recommend you to remove it and reinstall, always checking if its making full contact with the GPU itself.
You can always make the paste contact test, simply use the thermalgrease, attach the block to the board, and then remove it, checking if the grease has made full contact.

It should look something like this:



Showing you a full contact paste. Not like this:




Notice that those are CPU pictures, I failed to find GPU ones. Sorry.

Anyway, make sure the paste is correctly apply'd, and none of the videoboard components are pushing the block up. Check for capacitators or others high components.

Check for this link for info of the best way to apply thermal paste: https://www.pugetsystems.com/labs/articles/Thermal-Paste-Application-Techniques-170/

Good luck!
 
The Elder PC
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The Elder PC
(14 items)
 
CPUMotherboardGraphicsRAM
Intel Core i5 3570 Z77 Extreme4 NVIDIA GeForce GTX 280 2x 4GB DDR3 Corsair Vengeance 1600MHz BLU 
Hard DriveOptical DriveCoolingOS
1TB Western Digital Caviar Blue None Custom Loop WC Windows 7 64bits 
MonitorKeyboardPowerCase
AOC 22" A4Tech X7 G800v XFX 550w PRO (Seasonic) Raidmax Agusta 
MouseAudio
A4Tech N-730FX Steelseries Siberia V2 Red 
CPUMotherboardGraphicsRAM
Core 2 Duo E4400 P5G41T-M LX3 Radeon HD 7770 OC Kingston 
Hard DriveCoolingOSMonitor
Samsung HD250HJ CoolerMaster Hyper101 Microsoft Windows 7 x64 Samsung S22A300b 
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post #3 of 3
Thread Starter 
Thanks for the reply it was extremely helpful. After reading through the link you provided I decided that I had likely used too much thermal paste and that I would try the X method of application. Sure enough it looked like there was far too much. After reapplying the paste in an X and checking for good coverage my idle temps have dropped 4 degrees and my furmark temps are around 45 degrees. Almost a 30 degree drop! This is the performance I had hoped for.

Thanks again rep+
Paradigm
(14 items)
 
  
CPUMotherboardGraphicsRAM
FX-8320 Asus M5A97 R2.0 Saphire 7950 Boost 14gb 1333mhz DDR3 
Hard DriveOptical DriveCoolingOS
OCZ Arc 100 240gb + WD Caviar Black 1TB LG 8X WH08LS20 Bluray Burner H240X + EK Thermosphere Windows 7 Ultimate 64-bit 
MonitorPowerCase
Asus VE245 Corsair GS700 CoolerMaster Storm Stryker 
  hide details  
Reply
Paradigm
(14 items)
 
  
CPUMotherboardGraphicsRAM
FX-8320 Asus M5A97 R2.0 Saphire 7950 Boost 14gb 1333mhz DDR3 
Hard DriveOptical DriveCoolingOS
OCZ Arc 100 240gb + WD Caviar Black 1TB LG 8X WH08LS20 Bluray Burner H240X + EK Thermosphere Windows 7 Ultimate 64-bit 
MonitorPowerCase
Asus VE245 Corsair GS700 CoolerMaster Storm Stryker 
  hide details  
Reply
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