Overclock.net › Forums › Intel › Intel CPUs › are these normal temps for a i7 3930k under h80i?
New Posts  All Forums:Forum Nav:

are these normal temps for a i7 3930k under h80i? - Page 3

post #21 of 22
Thread Starter 
Quote:
Originally Posted by VonDutch View Post

thanks, i will rethink my answers, its hard to explain the "gap" between the die and the ihs..
the adhesive causes the distance tho, when you clean it off after delid, the distance is gone,
the ihs resting on the die, temps will drop, difference in temps between the cores will be less too smile.gif


EDIT,
hey Blameless, i asked idontcare over at anandtech about what i said/explained wrong in my post,
i hate to give wrong answers, so my exuses to OP also, sorry..
anyways, i asked him to come and have a look at our posts, and tell me what i did wrong


Hi VonDutch smile.gif

Hey, I recognize your avatar wink.gifbiggrin.gif

Happy to help. If I have correctly interpreted the situation in the OCN thread then I suspect there is a very simply explanation for the outcome.

In my opinion I believe your linked post went off-course when you wrote the following:
As Blameless subsequently stated, I do not think the stock Intel CPU TIM suffers from pumpout. The stock Intel CPU TIM used under the IHS was not all that flexible or deformable, when I removed it from the IHS it had the consistency of solid plastic as I recall.

If you review the pictures embedded in this post, paying close attention to the shape of the "TIM shavings" in the following picture, you'll see how I had to use a razor blade to "dice" the shavings because it was like cutting plastic.



The Intel stock CPU TIM is more like a solid pad, a spacer, that isn't likely to suffer from pump-out effect. In fact I expect Intel would have intentionally chosen the specific TIM they currently use on the basis that it does not suffer from pump-out. They would be fools not to factor this into their selection criteria.


As Blameless states in his linked post, the images you were using to convey pump-out effects were indeed created to speak to the pump-out effect that we think is going on with replacement TIMs like NT-H1 and AS5. The air gap is not expected to form with the stock TIM, but with more gel-like TIMs such as MX-4 and so forth.

It is also expected that the diamond-paste TIMs (IC Diamond) will avoid pump-out on the basis of published results on the subject.

So, if I were to summarize this I would state the following:

The temperature issue with stock desktop Ivy Bridge CPUs is solely due to the TIM-filled gap present between the CPU and the underside of the IHS (as proven here), and is not at all related to the pump-out effect. However, enthusiasts who delid their Ivy Bridge CPUs and replace the stock Intel CPU TIM with a gel-like substitute (NT-H1, AS5, MX-4, etc) and put the IHS back onto the CPU package do so with the added risk of then creating a situation in which the pump-out effect comes into play months later as their substitute TIM is pumped out from between the CPU and IHS and the resultant air-gap creates unacceptable temperatures once again.

The pump-out effect can be avoided by using a replacement TIM that is not susceptible to pump-out issues. IC Diamond, Liquid Pro, and Liquid Ultra are examples of replacement TIMs that are not expected to suffer from pump-out. (liquid ultra will pump-out on heating, but owing to its surface tension and liquid nature the liquid ultra is expected to "pump back in" when the CPU cools, resulting in no net pump-out effect over time...the same cannot be said of the gel-like TIMs which are not liquid enough to pump back into the air gap under the influence of their own surface tension forces)

Does this make sense to you? Does it seem reasonable?

All the best,
- Phil (aka IDC)


again sorry, i stand corrected smile.gif[/quote]

Long read... But alas, why did they go from soldered to TIM for Ivy?
     
CPUMotherboardGraphicsRAM
Ryzen R7 1700x Gigabyte Aorus AX370 Gaming 5 ASUS GTX 1080 Turbo @ 2050mhz G.Skill DDR4 16GB 8GBx2 3200 mhz 
Hard DriveHard DriveHard DriveHard Drive
Samsung 750 Evo 250GB Crucial m500 960GB OCZ Trion 150 960GB Samsung 960 Evo 1TB m.2 
Hard DriveOptical DriveCoolingOS
Crucial MX300 2TB DVD drive Corsair H60 2013 edition windows 10 home 
MonitorPowerCaseMouse
32inch Crossover 4K Thermaltake SMART M series 750W Powerspec G418 case Thermal 
CPUGraphicsRAMHard Drive
i7 4910mq GTX 880m (GK104 with 8GB VRAM) 16 GB DDR3 3x Samsung 840 EVO in RAID 0 (1.31 TB total) 
Hard DriveOptical DriveCoolingOS
Samsung M9T 2TB HDD Bluray/DVD drive Bluray/DVD drive Window 7 Home Premium 
MonitorPower
Panasonic 2880x1620 panel 180w Delta brick 
  hide details  
Reply
     
CPUMotherboardGraphicsRAM
Ryzen R7 1700x Gigabyte Aorus AX370 Gaming 5 ASUS GTX 1080 Turbo @ 2050mhz G.Skill DDR4 16GB 8GBx2 3200 mhz 
Hard DriveHard DriveHard DriveHard Drive
Samsung 750 Evo 250GB Crucial m500 960GB OCZ Trion 150 960GB Samsung 960 Evo 1TB m.2 
Hard DriveOptical DriveCoolingOS
Crucial MX300 2TB DVD drive Corsair H60 2013 edition windows 10 home 
MonitorPowerCaseMouse
32inch Crossover 4K Thermaltake SMART M series 750W Powerspec G418 case Thermal 
CPUGraphicsRAMHard Drive
i7 4910mq GTX 880m (GK104 with 8GB VRAM) 16 GB DDR3 3x Samsung 840 EVO in RAID 0 (1.31 TB total) 
Hard DriveOptical DriveCoolingOS
Samsung M9T 2TB HDD Bluray/DVD drive Bluray/DVD drive Window 7 Home Premium 
MonitorPower
Panasonic 2880x1620 panel 180w Delta brick 
  hide details  
Reply
post #22 of 22
Simple

to make more money
New Posts  All Forums:Forum Nav:
  Return Home
  Back to Forum: Intel CPUs
Overclock.net › Forums › Intel › Intel CPUs › are these normal temps for a i7 3930k under h80i?