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Hot!Delid 7940x or not?

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boinger
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Re: Delid 7940x or not? 2019/09/10 11:25:08 (permalink)
Think it is worth running a chiller on this setup 24/7? 
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RainStryke
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Re: Delid 7940x or not? 2019/09/10 14:58:30 (permalink)
If you can put up with the noise.

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#32
boinger
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Re: Delid 7940x or not? 2019/09/10 18:27:07 (permalink)
I would probably stick it in a small closet I have.
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Re: Delid 7940x or not? 2019/09/11 00:57:34 (permalink)
I think CPU should stay in original state. 
I know It's hard to look performance of Ryzen but AMD have much newer architecture and Intel didn't made such jump 10 years.

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#34
boinger
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Re: Delid 7940x or not? 2019/09/11 21:29:28 (permalink)
jollydet
also make sure you put some clear nail polish or some liquid electrical tape on the capacitors on the chip so no lm can get on them accidentally



Got my liquid metal today. Had ran out of my old tube. 
 
Wow. 
 
What a difference I didn't think it would make that big a difference in temps. 
 
I am at 4.8ghz at 1.25v and temps aren't going over 88 in spikes and average temps are around 70 at full load in occt. Ran the test for about 40 min for now. 
 
I am getting a chiller on Friday hopefully that will help. 
 
Couple points to note in case anyone else browses this thread. 
 
Direct die + liquid metal + high mounting pressure doesn't work well. 
 
I had better luck with low mounting pressure for temps. High mounting pressure and I would have a few cores that spike. 
 
Also I used a little bit more liquid metal than compared to the videos you see when remounting the IHS I think it helps with the curve of the core. When I spread a very thin layer it didn't work well either. 
#35
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Re: Delid 7940x or not? 2019/09/12 17:30:39 (permalink)
boinger
jollydet
also make sure you put some clear nail polish or some liquid electrical tape on the capacitors on the chip so no lm can get on them accidentally



Got my liquid metal today. Had ran out of my old tube. 
 
Wow. 
 
What a difference I didn't think it would make that big a difference in temps. 
 
I am at 4.8ghz at 1.25v and temps aren't going over 88 in spikes and average temps are around 70 at full load in occt. Ran the test for about 40 min for now. 
 
I am getting a chiller on Friday hopefully that will help. 
 
Couple points to note in case anyone else browses this thread. 
 
Direct die + liquid metal + high mounting pressure doesn't work well. 
 
I had better luck with low mounting pressure for temps. High mounting pressure and I would have a few cores that spike. 
 
Also I used a little bit more liquid metal than compared to the videos you see when remounting the IHS I think it helps with the curve of the core. When I spread a very thin layer it didn't work well either. 




Goodstuff, i would recommend picking up a rockitcool IHS to play with i got much better temps than direct die.
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boinger
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Re: Delid 7940x or not? 2019/09/17 16:24:10 (permalink)
jollydet
 
Goodstuff, i would recommend picking up a rockitcool IHS to play with i got much better temps than direct die.




Holy crap, 
 
Thanks for the advice I got the rockit cool IHS and wow I igot another 15-20C drop from it. 
 
Direct Die > Chilled water = 75-85C avg temp on hottest core on load some of them even reaching 95C peaks. 
 
Rockit cool IHS > Chilled Water = Avg temp is 50-55c with the hottest cores being 60c peaks are at 74C 
 
4.9Ghz at 1.303 Vcore
Vccin: 1.875
 
 
#37
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Re: Delid 7940x or not? 2019/09/18 12:53:25 (permalink)
:)
#38
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Re: Delid 7940x or not? 2019/09/18 21:55:32 (permalink)
It's weird that no one produce custom IHS with solder material on one side and when customers finish replacing thermal paste to stick custom IHS on CPU made from material with better heat transfer.
Copper example with protection for die. Than customers nicely could overprice CPU with more cores after invest in material, delid tool, custom IHS.
You buy i7-9700K and delid material instead i9-9900K, everyone happy. 
post edited by Vlada011 - 2019/09/18 21:59:39

i7-5820K 4.5GHz/RVE10-EK Monoblock/Dominator Platinum 2666/ASUS GTX1080Ti Poseidon/SBZxR /Samsung 970 EVO PLus 1TB/850 EVO 1TB /EVGA 1200P2/Lian Li PC-O11WXC/EK XRES D5 Revo 100 Glass/Coolstream PE360-Noctua NF-A12x25 PWM x3
http://www.evga.com
http://www.intel.com
http://www.nvidia.com
https://watercool.de
http://www.lian-li.com
https://www.youtube.com/watch?v=PHMun5xiRe0
 
https://xdevs.com/guide/2080ti_kpe/#intro
https://www.evga.com/articles/01386/evga-sr-3-dark/
 
 
 

 
 
#39
jollydet
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Re: Delid 7940x or not? 2019/09/18 21:59:12 (permalink)
Vlada011
It's weird that no one produce custom IHS with solder material on one side and when customers finish replacing thermal paste to stick custom IHS on CPU made from material with better heat transfer.
Copper example with protection for die. Than customers nicely could overprice CPU with more cores after invest in material, delid tool, custom IHS.
You buy i7-9700K and delid material instead i9-9900K, everyone happy.
 



Solder has worse thermal conductivity and is thicker than liquid metal application so the temps would be worse. Also the 9700k has no hyperthreading so it would never perform like a 9900k.
post edited by jollydet - 2019/09/18 22:18:59
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boinger
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Re: Delid 7940x or not? 2019/09/19 00:45:32 (permalink)
jollydet
:)


 
What do you think will cool better a chiller or a triple triple radiator with 9 fans ?
 
Talking about koolance exc-450 vs Koolance Erm-3kuk-c
 
#41
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Re: Delid 7940x or not? 2019/09/19 10:50:57 (permalink)
boinger
jollydet
:)


 
What do you think will cool better a chiller or a triple triple radiator with 9 fans ?
 
Talking about koolance exc-450 vs Koolance Erm-3kuk-c
 





The chiller will work better for quick runs but for extended stress tests or real workloads the Koolance Erm-3kuk-c is going to a better option, your chip is going to be throwing out more than 450 watts so you will start to overload the chiller fairly quickly however that Koolance Erm-3kuk-c is one expensive sucker! you could certainly build a triple rad setup much cheaper but its a nice package for sure. The Koolance Erm-3kuk-c will also allow you to add whatever gpus you want to the loop without much penalty.
#42
boinger
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Re: Delid 7940x or not? 2019/09/19 11:21:34 (permalink)
So from what I understand the chiller being able to keep the water temp sub ambient won't benefit me much? Like it won't help extract more heat out of the cpu? 
 
I have a line on an erm for $500
#43
jollydet
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Re: Delid 7940x or not? 2019/09/19 14:47:41 (permalink)
It wont be able to hold the CPU sub ambient for anything other than quick benchmark sessions as you will exceed the 450 watt rating and then you will be just be dumping an extra 250watts into the room + your system draw Either grab a EXC-800 or a Hailea hc-500a which has the power to hold your coolant sub ambient under heavy load or the Koolance Erm-3kuk  would be my recommendation. Keep in mind if you go sub ambient you need to be vigilant of condensation or do some serious insulating. Those Hailea units can be had for around 500$ new from somewhere like performance pcs.
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boinger
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Re: Delid 7940x or not? 2019/09/19 23:05:17 (permalink)
So from the little testing I have done. It does not seem like a chiller is really going to get me better clocks.
 
So I guess my question is will it give me better temps than a koolance erm-3kuk. 
 
It seems like a fools errand as this is not a benchmarking system so really just wasting money i think. I dunno.
 
It is quite nice to have all the heat removed from my PC area. But I guess the erm-3kuk will do that too. 
 
 
#45
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