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Skylake 6700K Overcloked cooled by Noctua NH-D15 - Temperatures ??? - Page 2

post #11 of 26
Thread Starter 
Thank you for sharing that with me. Very interesting. What's wrong with my rig then?
I'm amazed your 6700k is running at 1.43v, 4.7GHz with NH-D15, and the max temp was just 70 ?
What case do you have ? how many case fans at what speed are they running?
Was you CPU delidded?
I can't think about anything else
post #12 of 26
OP: I have a 6700K under a D15 My temps are similar to yours. Don't expect miracles. Someone will always have lower temps.
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post #13 of 26
Thread Starter 
Thanks. What OC settings do you have? and what's your achieved frequency?
post #14 of 26
I didn't try anything over 4.6. It doesn't improve my frames. Just light & power companies executive comp packages.
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post #15 of 26
i have an expensive air flow setup

Using the Coolermaster Mastercase 5 Pro,
with 6x Noctua NF-A14 Industrial PPC 140mm 2000RPM IP67 PWM.

3x intake at front
2x intake at top
1x exhaust at back

Also using a GELID PWM 1-to-4 Splitter Cable to keep it quiet, but extremely loud when benchmarking

I haven't delidded my cpu
Edited by theunknownkid - 11/5/15 at 2:08am
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Corsair Vengeance LPX CMK8GX4M2B3600C18 8GB (2x... Samsung 950 Pro Series 512GB M.2 NVMe SSD Samsung SM951 512GB M.2 NVMe SSD Noctua NH-D15 CPU Cooler 
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Windows 10 ASUS PG348Q ROG Swift 34in 100Hz G-Sync IPS Gam... Razer BlackWidow Ultimate Stealth 2014 Mech Gam... EVGA SuperNOVA G2 Gold 750W Power Supply 
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Corsair Vengeance LPX CMK8GX4M2B3600C18 8GB (2x... Samsung 950 Pro Series 512GB M.2 NVMe SSD Samsung SM951 512GB M.2 NVMe SSD Noctua NH-D15 CPU Cooler 
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Windows 10 ASUS PG348Q ROG Swift 34in 100Hz G-Sync IPS Gam... Razer BlackWidow Ultimate Stealth 2014 Mech Gam... EVGA SuperNOVA G2 Gold 750W Power Supply 
CaseMouseAudioOther
CoolerMaster MasterCase 5 Modular Mid Tower Case Razer Mamba 4G Dual Laser Gaming Mouse Swan M50W Powered 2.1 System Noctua NF-A14 Industrial PPC 140mm 2000RPM IP67... 
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CableMod E-Series G2 & P2 Cable Kit Black/Red NZXT Hue+ RGB Lighting Kit 
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post #16 of 26
I also have a 6700k (4.6 Ghz, 1.37V) and a NH-D15S, with 1x Noctua Redux S12b on the cpu cooler and 3x Noctua Redux S12b as system fans.

Temps at Aida 64 are around 75 degrees, if I use stronger fans around 70 degrees.

Prime 27.9 with large FFTs they go up to 80 degrees, with stronger fans around 75.

Oc.net's X264 stability test with auto and normal I even get around 84 degrees.


I was also a bit shocked when I saw this, I thought you could cool a ~100W cpu with a dual heatsink tower easily. But the TIM on the i7 6700k is terrible it seems. Probably you can only get much better temps if you delid or use water cooling. I renewed the thermal paste and reseated the cooler, but still same temps.
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post #17 of 26
Quote:
Originally Posted by theunknownkid View Post

i have an expensive air flow setup

Using the Coolermaster Mastercase 5 Pro,
with 6x Noctua NF-A14 Industrial PPC 140mm 2000RPM IP67 PWM.

3x intake at front
2x intake at top
1x exhaust at back

Also using a GELID PWM 1-to-4 Splitter Cable to keep it quiet, but extremely loud when benchmarking
Your case is not flowing as much air as you think. 5x intake and only exhaust area is back fan vent and a small vent over PCIe vented slots. I doubt that airflow area is even 1/3 the airflow area of intake. We need to keep in mind a case only flows as much air as the smaller of two areas, intake or exhaust.

My advise is unplug the top intakes.
Maybe use the back top vent as exhaust with front top blank or even closed off.
"Ways to Better Cooling" link in my sig might be of interest. Opening post is index, click on topics of interest to see them.
post #18 of 26
Quote:
Originally Posted by theunknownkid View Post

i have an expensive air flow setup

Using the Coolermaster Mastercase 5 Pro,
with 6x Noctua NF-A14 Industrial PPC 140mm 2000RPM IP67 PWM.

3x intake at front
2x intake at top
1x exhaust at back

Also using a GELID PWM 1-to-4 Splitter Cable to keep it quiet, but extremely loud when benchmarking

I haven't delidded my cpu

that's a really good temp considering you haven't delidded your chip i'd expect higher temps then that with the stock intel goop under the lid.
post #19 of 26
@doyll Yea I will do some tests on the top fan configuration this weekend. I plan to post results in the air cooling forum.

OP: how much thermal paste did you use? I used a very tiny dot in the middle. About half the size of a pea.

http://www.overclock.net/t/1491876/ways-to-better-cooling-airflow-cooler-fan-data#post_22335323
expensive
(18 items)
 
  
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Intel 6700K MSI Z170A-Gaming M7 Motherboard MSI GeForce GTX 980 Ti Lightning 6GB Corsair Vengeance LPX CMK8GX4M2B3600C18 8GB (2x... 
RAMHard DriveHard DriveCooling
Corsair Vengeance LPX CMK8GX4M2B3600C18 8GB (2x... Samsung 950 Pro Series 512GB M.2 NVMe SSD Samsung SM951 512GB M.2 NVMe SSD Noctua NH-D15 CPU Cooler 
OSMonitorKeyboardPower
Windows 10 ASUS PG348Q ROG Swift 34in 100Hz G-Sync IPS Gam... Razer BlackWidow Ultimate Stealth 2014 Mech Gam... EVGA SuperNOVA G2 Gold 750W Power Supply 
CaseMouseAudioOther
CoolerMaster MasterCase 5 Modular Mid Tower Case Razer Mamba 4G Dual Laser Gaming Mouse Swan M50W Powered 2.1 System Noctua NF-A14 Industrial PPC 140mm 2000RPM IP67... 
OtherOther
CableMod E-Series G2 & P2 Cable Kit Black/Red NZXT Hue+ RGB Lighting Kit 
  hide details  
Reply
expensive
(18 items)
 
  
CPUMotherboardGraphicsRAM
Intel 6700K MSI Z170A-Gaming M7 Motherboard MSI GeForce GTX 980 Ti Lightning 6GB Corsair Vengeance LPX CMK8GX4M2B3600C18 8GB (2x... 
RAMHard DriveHard DriveCooling
Corsair Vengeance LPX CMK8GX4M2B3600C18 8GB (2x... Samsung 950 Pro Series 512GB M.2 NVMe SSD Samsung SM951 512GB M.2 NVMe SSD Noctua NH-D15 CPU Cooler 
OSMonitorKeyboardPower
Windows 10 ASUS PG348Q ROG Swift 34in 100Hz G-Sync IPS Gam... Razer BlackWidow Ultimate Stealth 2014 Mech Gam... EVGA SuperNOVA G2 Gold 750W Power Supply 
CaseMouseAudioOther
CoolerMaster MasterCase 5 Modular Mid Tower Case Razer Mamba 4G Dual Laser Gaming Mouse Swan M50W Powered 2.1 System Noctua NF-A14 Industrial PPC 140mm 2000RPM IP67... 
OtherOther
CableMod E-Series G2 & P2 Cable Kit Black/Red NZXT Hue+ RGB Lighting Kit 
  hide details  
Reply
post #20 of 26
Thread Starter 
Quote:
Originally Posted by doyll View Post

Your case is not flowing as much air as you think. 5x intake and only exhaust area is back fan vent and a small vent over PCIe vented slots. I doubt that airflow area is even 1/3 the airflow area of intake. We need to keep in mind a case only flows as much air as the smaller of two areas, intake or exhaust.

My advise is unplug the top intakes.
Maybe use the back top vent as exhaust with front top blank or even closed off.
"Ways to Better Cooling" link in my sig might be of interest. Opening post is index, click on topics of interest to see them.

So, I have good news. I've bought an extra fan, 1500 RPM from Fractal Design.
I installed it as an exhaust fan on the back of the case to replace the original 1000RMP fan that came with the case.
This original 1000RMP fan I installed it in the front as a second intake fan.

So now I have 2 x 1000RPM in-taking fans and one 1500RMP exhaust fan located just in front of the Noctua CPU cooler.
This way I managed to reduce my temps by 10-15C. Unbelievable.
I managed easily to OC my rig up to 4.7GHz and after 1h of testing I get the following temps:
Max Core0 = 73C
Max Core1 = 70C
Max Core2 = 71C
Max Core3 = 68C
This is not worrying my anymore.
Always my Core0 was 5C higher than the coldest core. Any idea why, Is this happening fore most of you?

BTW I'm an IT guys working in this field for many years, but never bother to OC my home rig so far.

In conclusion I underestimated the role of case fans, I though mostly the CPU coolers are important.
Thanks to your recommendations guys, I managed to reach my Everest 4.7GHz at decent temps.
Don't want to push more to get in the end just a few msec. better performance in Lightroom.
From now on, for everyday work, I will go back to more terrestrial values like 4.6GHz, and leave it like that for the rest of it's life.

Thanks again and happy OC
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