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Coffee Lake Binning - Page 71

Poll Results: Which SKU are you interested in purchasing from Silicon Lottery?

 
  • 2% (7)
    8350K 4C/4T/$168
  • 11% (31)
    8600K 6C/6T/$257
  • 85% (227)
    8700K 6C/12T/$359
265 Total Votes  
post #701 of 792
Quote:
Originally Posted by Silicon Lottery View Post

We have to leave in some headroom in order to guarantee stability.

We'll have more 8700Ks coming in on Tuesday so they should start popping up on the site Tuesday evening. We are no longer restricted on 8700K inventory coming in, so 8700Ks should start being in stock consistently starting next week.
awesome to hear that... thanks
post #702 of 792
Quote:
Originally Posted by moon162612 View Post

Sure!
Hm, weird picture. Doesn’t look like it has full contact, not sure why, as it was properly fastened.



Dude, that's 3x more paste than I would use. You just need a little of it to fill down the spots that aren't leveled up corretly. Use 2-3x less paste and tighten each corner by a bit till you cant tighten it more with your fingers.
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post #703 of 792
Quote:
Originally Posted by tashcz View Post

Dude, that's 3x more paste than I would use. You just need a little of it to fill down the spots that aren't leveled up corretly. Use 2-3x less paste and tighten each corner by a bit till you cant tighten it more with your fingers.

And if I understood you correctly, there should be no looseness when the cooler is installed. The cooler should be tight.
post #704 of 792
Thread Starter 
We will actually have some more 8700Ks going up starting tonight.
post #705 of 792
Thread Starter 
Some stock is up.
post #706 of 792
Quote:
Originally Posted by moon162612 View Post

You are a genius, man! Thanks for the hint! thumb.gif

To make sure the surfaces are in touch I applied the compound on both the cooler and the CPU. The results is astonishing: max 83 degrees on CineBench for 5Ghz, which sounds much more reasonable :-)
Actually, I've tried to redo this stuff a couple of times before, but the result was the same, that's why I was so harsh. Probably I've done it right this time.

Overall set up experience with this cooler is kinda weird, as the cooler platform is larger than the CPU, and it has some looseness/variability on where you position the platform comparing to the CPU. I tend to do it as aligned to center as possible, but you never know.




I'm glad that helped a bit. smile.gif Yea, it looks like you had an overabundance of thermal paste. Here's what I do. Clean the cpu and cooler contact areas very well. Put a dot of thermal paste centered on the CPU lid. The amount should be more than a grain of rice but slightly less than a pea. You want the cooler to be lined up correctly so you don't smear the paste all over while placing the cooler on the CPU (causes air bubbles). After placing the cooler on the CPU tighten the screws down gently in a X pattern. So left top corner, bottom right corner, bottom left corner, top right corner. After gently tightening the screws in an X pattern, go back an tighten the screws a little bit more (not too much). Enough to make the cooler feel very secure with NO play (looseness). The cooler should be very snug.

Your temps look better but I think you could drop them another few degrees.

If you are using Thermal Grizzly Kryonaut... you can disregard the above directions as I have had MUCH better luck spreading Kryonaut on the CPU by hand instead of letting the CPU cooler spread it.
Quote:
Originally Posted by Essenbe View Post

And if I understood you correctly, there should be no looseness when the cooler is installed. The cooler should be tight.

This is correct.
Edited by fixall - 12/18/17 at 2:17pm
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post #707 of 792
What % of 8700Ks hit 5.3ghz
 
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post #708 of 792
Quote:
Originally Posted by DiscoEST View Post

What % of 8700Ks hit 5.3ghz

3% going by SL's testing.
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post #709 of 792
Quote:
Originally Posted by fixall View Post

I'm glad that helped a bit. smile.gif Yea, it looks like you had an overabundance of thermal paste. Here's what I do.
...
If you are using Thermal Grizzly Kryonaut... you can disregard the above directions as I have had MUCH better luck spreading Kryonaut on the CPU by hand instead of letting the CPU cooler spread it.

I believe my initial photo was a little bit misleading. I actually applied rise-size amount, but spread it with the use of a credit card, as suggested in the Thermalright's manual, so it looked like it's a lot of it over there.

However, to experiment I tried to reapply it with putting in the center only:



By the way, I am using MX-4 paste.

To check how it affected the temps, I measured Max temperature during Cinebench before and after reapplication.
Before:


After:


So, didn't help, unfortunately. Maybe spreading it over the surface is not a bad idea.

Anyway, I ordered Fractal Design Celsius S36 and will test how it works in a day or two.


One small update: I tuned the voltage and frequency, and the system works stable on 5GHz all cores with 1.385V for 1 hour testing on Prime95 (AVX turned off). Temps are upper 80-s and lower 90-s.
Probably should work on 5.1Ghz with higher voltage (it was marked as 5.1Ghz by SL), but it'll be too hot. Will try it with the liquid cooler.
Quote:
After placing the cooler on the CPU tighten the screws down gently in a X pattern.
Yeah, but unfortunately this cooler has mounting only in one axis, so you have to make sure that this mounting crosses the sink right in the center.

This is the variability you have to be cautious about:


Edited by moon162612 - 12/18/17 at 6:55pm
post #710 of 792
I'd suggest swapping the cheaper MX-4 for Thermal Grizzly Kryonaut. I've been using it since early 2016 instead of MX-4 and its well worth the few bucks more (a miniscule portion of any PC budget and not where one should skimp). I've also used nothing but air coolers in all my systems. The QVL describes "Any AIO watercooler 240mm or greater", yet after looking at plenty of benchmarks for my new system (I was eyeing the Corsair Hydro H115i, the larger successor to the H100i SL is using for its test environment) I've found that AiO aren't better than the best air coolers - they're just louder, more expensive and don't last as long. With a top of the line air cooler (like Noctua NH-D15 or D15-S) you should be able to reach the same stable overclocking frequency as SL did during binning tests. As for correct thermal paste application, this video offers a few common methods. I've been using the X-shaped method since swichting to Kryonaut and haven't had any issues with it yet. It's a lot less hassle than trying to evenly "paint" the heatspreader with a credit card.
Edited by DerBademeister - 12/19/17 at 11:08am
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