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Where on 290X PCb do I measure VRM temps with thermometer? - Page 2

post #11 of 16
Quote:
Originally Posted by $ilent View Post

but the area im measuring on the back of the pcb as close aspossible is only 40C, which cant be right for VRM temps whilst folding.

Ah never mind, I had to get literally within inches of measuring the back of the pcb.  Temps were around 54C, which funnily enough is what GPUz is reporting too.


54c... since that is the back of the pcb, you can add X value to it. We know the actual vrms is hotter. You seem to doubt that the vrms get actually hot. What, you didn't read the link at swiftech? I'll repeat it again, it's impossible for lil dinky pieces of aluminum to have lower temps than the monoblock of the reference card with a squirrel cage right on it.
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post #12 of 16
Thread Starter 
But tsm ive measured the back of the vrms with a thermometer and the temps are the same as gpuz. What more can I do?
post #13 of 16
Quote:
Originally Posted by $ilent View Post

But tsm ive measured the back of the vrms with a thermometer and the temps are the same as gpuz. What more can I do?

Run it without a heatsink! tongue.gif


Would you happen to have thermocouple?
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post #14 of 16
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Originally Posted by $ilent View Post

But tsm ive measured the back of the vrms with a thermometer and the temps are the same as gpuz. What more can I do?


Let me ask you, do you think the back of the pcb will be as hot as the actual vrm? What more can you do? I dunno it depends on how close you wanted to get. The closest I think would be using an actual temp probe with a monitor, which are not actually expensive.
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post #15 of 16
Thread Starter 
Quote:
Originally Posted by tsm106 View Post

Let me ask you, do you think the back of the pcb will be as hot as the actual vrm? What more can you do? I dunno it depends on how close you wanted to get. The closest I think would be using an actual temp probe with a monitor, which are not actually expensive.

@tsm106 Well the temps are like I say same as gpuz is reporting. Im not willing to spend any more money to check these temps which I believe are just about right. Im not sure what this "add X amount of C to what the thermo is saying" comes from.
Edited by $ilent - 11/8/13 at 7:50pm
post #16 of 16
Quote:
Originally Posted by $ilent View Post

But tsm ive measured the back of the vrms with a thermometer and the temps are the same as gpuz. What more can I do?

Youve done enough imo - infrared thermometer AND GPUZ are both telling you the same thing. Obviously it is possible for the Gelid ICY 2's "lil dinky pieces of aluminum with a squirrel cage" can cool the VRMS to below 60C. Either the ramsinks + fan are efficient, or the VRMS dont really run that hot to begin with.

Yes the back of the PCB will be slightly cooler than the actual chips, but if youre running stable the icy is doing is job and the VRMS are not over heating or else it will throttle.

Guru3d used thermal imaging hardware on their 290X and it also http://www.guru3d.com/articles_pages/radeon_r9_290x_review_benchmarks,12.html and it is inline with what you are seeing.

"Once we zoom in a little with the camera, and now I am happy we bought a higher than average resolution thermal imaging camera, we can pinpoint some very specific measuring points. M1 indicates the GPU die measured from the backside. 94.6 Degrees C, that is 100% on par with what the temperature probes tell us. You'll notice that the VRM zone slightly left from the M2 position is running 70 degrees C, I honestly expected worse so that is not too bad. "
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