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help with temp monitoring

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Padron

Registered
Joined
Feb 14, 2012
Although I've built water-cooled computers before, their primary purpose was to avoid the irritating whine of GPUs not necessarily more effective cooling overall.

I just built a new computer (details at the end) and am monitoring temp with Phobya temp sensors. I would like to be able to monitor my ΔT and know that I need to know ambient and water temps to do so. It seems like my initial results aren't consistent with what should be expected and want to avoid putting in a ton of work benching my computer if the data points I collect are garbage to begin with. A ΔT of 3C seems unlikely.

I've been running the Intel Burn Test and then Prime95. I'm about ~20 minutes into Prime95 and here are my temps:
Phobya into the radiator 21.2
Phobya out of radiator 20.4
ambient temp (collected from Phobya instant computer turned on 17.8 which seems consistent with cool basement temp)
Realtemp 3.7 cores are 37-46

Can these numbers actually reflect what is going on?

The computer (everything stock right now, overclocking to come after I dial in my testing methodology)
Intel 3960x
Asus Sabertooth x79
Sapphire 7970
G.Skill 4x4gb DDR-2133
Swiftech MCP35x dual pump, PWM-controlled right now
XSPC RX360 x2
Noctua fans x6
Sunbeam Smart Rheobus on manual with fans maxed
Koolance 370 block
Koolance 797 block on GPU
 
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Turn your PC on. Once settled in for 30 min

Record ambient room temps
Record CPU and GPU temp
Record your DT and water ect temps

Load PC Prime 95 AND your fav GPU load at the same time run for 30 min

Record the same temps as before
Report your findings. Then we'll have an idea what we need to see.
 
results

ambient temp: 15.4 C (poorly heated basement)

computer idle:
water temp: 16.4 post radiator
CPU temp: 25, 23, 15, 23, 22, 21
GPU temp: 20
delta T: 0.2

after FurMark and Prime 95 for 60 minutes
water temp: 20.6 post radiator
CPU temp: 45, 42, 36, 40, 39, 43
GPU temp: 34
delta T: 5.2

FurMark reported that my 7970 drew ~110W during the test.

Thanks.
 
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