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Ivy bridge rocks !! 5.1GHz prime95 3770K and more! - Page 4

post #31 of 50
Quote:
Originally Posted by Marcsrx View Post

Is this a water cooler? Please splain thanx

Thermoelectric cooling. Basically it's a heat pump, moving heat from one side to the other using electricity, lots of it.
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post #32 of 50
Thanx. I saw the post w/the wiki link. Very cool stuff! pun intended lol
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post #33 of 50
Thread Starter 
Quote:
Originally Posted by foxrena View Post


An interesting observation
Hey guys, I measured the relationship between IHS temperature and 3770K core temps. The result is interesting and explains why on water cooling people have high core temps. See the graph below:
486
The IHS temperature is measured by placing a temperature probe on the cold plate of the TEC block (which is in contact with IHS). Interestingly, the slope of the curve is not 1 but 1.33, which means that if you drop/increase the IHS temperature by 3 degrees, you will drop/increase the core temp by 4 degrees. This result is obtained at 4.7GHz, and at higher frequencies and voltages, it will be more dramatic. It also explains why on water cooling when water is usually 25C-35C, people could get high temperature above 80-90C. It further illustrates why TEC cooling is especially effective on ivy-bridge smile.gif

Nobody interested in this? A bit too technical? smile.gif
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post #34 of 50
Quote:
Originally Posted by foxrena View Post

Nobody interested in this? A bit too technical? smile.gif

For the most people here probably not. Personally the only thing that stops me from going with tec is condensation. I hate the look of eraser covering pcb.
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post #35 of 50
Thread Starter 
No I don't mean TEC, I mean the graph. It shows unless you lower IHS temperature, core temp will be high up there for ivy. Water actually doesn't help much over air cooling because of ivy 's low power consumption and high thermal density.
I hate condensation too. I tried my best to make insulation look better and I'm quite satisfied with the result. Neoprene covers the ugly eraser smile.gif
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post #36 of 50
Quote:
Originally Posted by foxrena View Post

No I don't mean TEC, I mean the graph. It shows unless you lower IHS temperature, core temp will be high up there for ivy. Water actually doesn't help much over air cooling because of ivy 's low power consumption and high thermal density.
I hate condensation too. I tried my best to make insulation look better and I'm quite satisfied with the result. Neoprene covers the ugly eraser smile.gif

The relations between IHS and core temps are quite interesting. I would love to see if the rule still apply if the paste changed under ihs. Although I wouldn't call that crusty horrible stuff from intel a thermal compound rolleyes.gif
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post #37 of 50
Running a 2500k but seen a few places claim that Ivy shows some signs of cold scaling so been thinking of getting one under phase, can you guys confirm or deny?
post #38 of 50
Quote:
Originally Posted by Mr Frosty View Post

Running a 2500k but seen a few places claim that Ivy shows some signs of cold scaling so been thinking of getting one under phase, can you guys confirm or deny?

I can confirm it with ln2, I haven't tried an IB with a single stage yet, but have done 5.9Ghz with cascade. Same chip 6.3Ghz with ln2.
It does scale with cold, but not sure at what point it will overpower an SS.
    
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post #39 of 50
Thread Starter 
Quote:
Originally Posted by McDown View Post

The relations between IHS and core temps are quite interesting. I would love to see if the rule still apply if the paste changed under ihs. Although I wouldn't call that crusty horrible stuff from intel a thermal compound rolleyes.gif
Thanks for reply. In the test actually I already changed the paste under IHS to MX-4.smile.gif
Quote:
Originally Posted by FtW 420 View Post

I can confirm it with ln2, I haven't tried an IB with a single stage yet, but have done 5.9Ghz with cascade. Same chip 6.3Ghz with ln2.
It does scale with cold, but not sure at what point it will overpower an SS.

Agree. I don't have experience with SS. But this chip I used scales nicely from 5GHz (on water 25C) to 5.3GHz (-17C TEC) with same Vcore (1.45V). I bet on SS it would be easily >5.5.
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post #40 of 50
I so want one.
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