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High Temperatures On Custom Loop?

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post #1 of 18 (permalink) Old 01-22-2019, 09:14 PM - Thread Starter
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High Temperatures On Custom Loop?

My CPU hits up to 92c during Prime95 "AVX" SmallFFT stress testing.

Here are my specs:
9900K 5GHz HT 1.34v @ AVX LOAD

Custom loop:
EK Supremacy CPU block
EK D5 Pump, EK Res
Phobya 420mm RAD (NF A14's)
Phobya 360mm RAD (NF F12's P/P)
Mayhems X1 Clear

Flow rate is good, no air in the system, ambient around 16 - 18c.
Rad's and block are around 4 years old.
Cleaned once a year with vinegar, hot water, lots of shaking and a final distilled water flush.
Some oxidation can be seen inside the RAD's copper surface as you look through the inlet ports.

Intel Core i9 9900K HT 5GHz
GIGABYTE Z390 Ultra
AMD ASUS STRIX OC VEGA 64
G-Skill Trident 2x8GB DDR4 4000MHz
Samsung EVO NVM.e 250GB
SeaSonic 1250W Gold
Corsair 900D + Custom Loop.


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post #2 of 18 (permalink) Old 01-23-2019, 02:26 AM
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Do you have a watertemp sensor?
It's probably fine. Small FFT with AVX generates so much heat it cannot escape the small die quickly enough. The only way to increase heat transfer is by die direct cooling.

I couldn't even do 5GHZ AVX prime testing on my 8700k before it was delidded. I would thermal after 2 minutes.

My Rig
(18 items)
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Intel i7 8700k
Motherboard
Asus Hero X
GPU
MSI 1080TI Gaming X
RAM
Corsair Vengeance LPX 3000C15
Hard Drive
Samsung 970 EVO
Hard Drive
Samsung 850 EVO
Power Supply
Corsair RM850X
Cooling
EK Supremacy EVO
Cooling
Dual Hardware Labs Nemesis 360GTS with FD Venturi HP-12 PWM fans
Cooling
EK D5 PWM
Cooling
EK 1080 Strix waterblock + backplate
Case
Fractal Design Define R6
Operating System
Windows Pro 10
Monitor
Acer XB271HU 1440p 165hz IPS
Keyboard
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Mouse
Zowie FK-2
Mousepad
Steel Series QCK Heavy
Audio
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post #3 of 18 (permalink) Old 01-23-2019, 04:03 AM - Thread Starter
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Quote: Originally Posted by broodro0ster View Post
Do you have a watertemp sensor?
It's probably fine. Small FFT with AVX generates so much heat it cannot escape the small die quickly enough. The only way to increase heat transfer is by die direct cooling.

I couldn't even do 5GHZ AVX prime testing on my 8700k before it was delidded. I would thermal after 2 minutes.
If the heat can't escape the die fast enough, that will be bottlenecking the loop's performance to a degree.

As for the inside of my radiators, they have turned green like the statue of liberty. I assume this is oxidation and won't effect thermal performance?

I don't have a water temperature sensor fitted.

Intel Core i9 9900K HT 5GHz
GIGABYTE Z390 Ultra
AMD ASUS STRIX OC VEGA 64
G-Skill Trident 2x8GB DDR4 4000MHz
Samsung EVO NVM.e 250GB
SeaSonic 1250W Gold
Corsair 900D + Custom Loop.


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post #4 of 18 (permalink) Old 01-23-2019, 04:21 AM
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Quote: Originally Posted by broodro0ster View Post
Do you have a watertemp sensor?
It's probably fine. Small FFT with AVX generates so much heat it cannot escape the small die quickly enough. The only way to increase heat transfer is by die direct cooling.

I couldn't even do 5GHZ AVX prime testing on my 8700k before it was delidded. I would thermal after 2 minutes.
Yeah I agree with broodro0ster, small FFTs AVX is brutal, especially on the already toasty 9900k. From my understanding the soldered TIM doesn't deal with high heat very well, I remember Gamers Nexus talking about how that is one of the main reasons for liquid metal being much better. I personally don't use P95 AVX anymore. My testing suite is usually a few hours of AIDA64 and RealBench as well as a few real world use cases.

Quote: Originally Posted by BradleyW View Post
If the heat can't escape the die fast enough, that will be bottlenecking the loop's performance to a degree.

As for the inside of my radiators, they have turned green like the statue of liberty. I assume this is oxidation and won't effect thermal performance?

I don't have a water temperature sensor fitted.
I highly recommend installing a temperature sensor, if you have a motherboard with temperature sensor plugs like the ASUS Maximus series you can just get a G1/4 plug type sensor from XSPC, Barrow etc for under $10 and install it somewhere in your loop. I personally run two in my main system, one before the radiators and one after, but even having just one is better than none. It gives you an important performance metric for gauging how well your loop is working and also allows you to control your fans based on water temp.

As for the green in the radiators, I'm not 100% sure but I think a little bit isn't unusual, but a lot might be copper corrosion or oxidisation? I notice that when I buy a new radiator the inside normally has a slight amount of greenish discoloration in some areas when I look through the ports, but not much. It might be worth trying something like Mayhems Blitz Part 1 if it's severe. I could be wrong about this though.

Primary System Specs: Lian Li PC-O11 DX - ROG Maximus XI Formula - Watercooled Intel 9900k (4.9Ghz) - Watercooled RTX 2080 Ti FE - G.Skill Trident Z RGB 3200Mhz CL16 32GB - Corsair RM1000i PSU - Samsung 970 EVO 2TB NVME SSD

Secondary System Specs: Fractal Design Define S2 - ROG Maximus X Code - Watercooled Intel 8700k (5Ghz) - Watercooled Strix GTX 1080Ti OC - G.Skill Trident Z RGB 3200Mhz CL16 16GB - Seasonic X-1050W PSU - Intel 600P NVME SSD

Last edited by Zammin; 01-23-2019 at 04:29 AM.
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post #5 of 18 (permalink) Old 01-23-2019, 04:27 AM
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Quote: Originally Posted by BradleyW View Post
If the heat can't escape the die fast enough, that will be bottlenecking the loop's performance to a degree.

As for the inside of my radiators, they have turned green like the statue of liberty. I assume this is oxidation and won't effect thermal performance?

I don't have a water temperature sensor fitted.
Hmmm, I don't have experience with oxidation in radiators. I bet it will affect thermal performance to some degree, but I don't know how much.
Mayhems blitz should clean this up. Or a vinegar + salt mix if you don't want to buy Blitz. Just make sure to rinse it very good after the process.

My Rig
(18 items)
CPU
Intel i7 8700k
Motherboard
Asus Hero X
GPU
MSI 1080TI Gaming X
RAM
Corsair Vengeance LPX 3000C15
Hard Drive
Samsung 970 EVO
Hard Drive
Samsung 850 EVO
Power Supply
Corsair RM850X
Cooling
EK Supremacy EVO
Cooling
Dual Hardware Labs Nemesis 360GTS with FD Venturi HP-12 PWM fans
Cooling
EK D5 PWM
Cooling
EK 1080 Strix waterblock + backplate
Case
Fractal Design Define R6
Operating System
Windows Pro 10
Monitor
Acer XB271HU 1440p 165hz IPS
Keyboard
Corsair K70
Mouse
Zowie FK-2
Mousepad
Steel Series QCK Heavy
Audio
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post #6 of 18 (permalink) Old 01-23-2019, 07:30 AM
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those temps are fine, in fact rather good given the voltage. I hit similar temps at 1.31v 5.1ghz non avx small fft p95 on my 9900k. 23c ambient. This is with an EK velocity block and 2 EK PE 360 rads.

btw, don't test your 9900k with p95 avx small fft, way too stressful for any real world scenarios. Use 1344k in place ffts for avx testing in p95 and use in place small fft with avx disabled for non avx testing.

Singularity Cases Spectre
Intel 9900k @ 5.2ghz 1.365v
Nvidia 2080 TI SLI @ 2130mhz
G.Skill Trident Z memory 2x8gb 4000mhz 16-17-17-28 1.45v
Gigabyte z390 Aorus Master Motherboard
EVGA 1200w P2 psu
Custom waterloop
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post #7 of 18 (permalink) Old 01-23-2019, 08:30 AM
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Hi,
Yeah I'd use a more realist test
Real bench is okay

I'd use Blender and it's free demo rendering files classroom is a very good 10-14 minute test that can be repeated if one uses render animation instead of render image and cancel when ever one wants too more stressful that cinebench.
https://www.blender.org/

https://www.blender.org/download/demo-files/

CPU
i9-9940x With Heatkiller IV Pro and VRM Plexi-Copper water block
Motherboard
ASUS x299 Rampage VI Apex
GPU
Titan Xp with copper Water Block
RAM
Trident Z 3600C16 4x8gb's b-die default timings 16-16-16-36
Hard Drive
Samsung 970 Evo Plus 500gb M.2/ Samsung 850 Pro 256gb for os and 500gb evo for favorite games plus other wd hdd's for data and backup's
Optical Drive
LG Blu-Ray WH16NS40
Power Supply
evga 1200-P2
Cooling
2-280GTX Black Ice Nemesis rads with D5 pump-res combo and D5 top before and after rads.
Case
corsair 450D with added 2nd floor to house radiator on top
Operating System
Win-7 pro & 10 pro Win-7 Primary os.
Monitor
ASUS VG248QE 24" 144Hz
Keyboard
Logitech G910 Orion spectrum
Mouse
Redragon Perdition
Audio
Built in realtek and Insignia 2.0 soundbar HSB318
CPU
i7-5930k with Heatkiller IV Pro Plexi-Copper and koolance vrm water blocks
Motherboard
X99 Sabertooth
GPU
EVGA 1080ti FTW3 with Water block
RAM
Trident-Z 3200C14 4x8gb's b-die default timings 14-14-14-34
Hard Drive
Samsung 970 Evo 500gb M.2/ Samsung 850 Pro 256gb for os and 500gb evo for favorite games plus other wd hdd's for data and backup's
Power Supply
EVGA 1000-P2
Cooling
2-240 GTX Black Ice Nemesis rads/ D5 pump-res combo and D5 top before and after rads.
Case
Corsair 450D with added 2nd floor to house radiator on top
Operating System
Win-7 and 10 pro Win-7 Primary os.
Monitor
AOC G2460PG 24"G-Sync 144Hz
Mouse
Red Dragon Perdition
Audio
Built in realtek and Insignia 2.0 soundbar HSB318
Hard Drive
eLeaf MELO-3 4ml
Power Supply
SE US18650VTC6 3120mAh 30A 3.6V 18650 Li-ion Battery - GREENx4
Case
ANGIS Legion MOD 200w Geek Vape
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post #8 of 18 (permalink) Old 01-23-2019, 09:15 AM
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I use real bench and aida 64 I haven't used prime for years don't really see the point in it being it does not represent any kind of real world usage scenario for me. If it passes both of my tests I fire up some games and go from there.
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post #9 of 18 (permalink) Old 01-23-2019, 09:27 AM
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Quote: Originally Posted by ThrashZone View Post
Hi,
Yeah I'd use a more realist test
Real bench is okay

I'd use Blender and it's free demo rendering files classroom is a very good 10-14 minute test that can be repeated if one uses render animation instead of render image and cancel when ever one wants too more stressful that cinebench.
https://www.blender.org/

https://www.blender.org/download/demo-files/
Quote: Originally Posted by OutlawII View Post
I use real bench and aida 64 I haven't used prime for years don't really see the point in it being it does not represent any kind of real world usage scenario for me. If it passes both of my tests I fire up some games and go from there.
I'm with you two. I don't see the fascination with P95. It's like putting new tires on your car and testing them by repeatedly driving headlong into a telephone pole.

Yeah....the little girl hentai avatar is really creeping me out....
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post #10 of 18 (permalink) Old 01-23-2019, 09:36 AM
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Quote: Originally Posted by ciarlatano View Post
I'm with you two. I don't see the fascination with P95. It's like putting new tires on your car and testing them by repeatedly driving headlong into a telephone pole.
Hi,
I'd say buying new tires and burning them up and going no where

CPU
i9-9940x With Heatkiller IV Pro and VRM Plexi-Copper water block
Motherboard
ASUS x299 Rampage VI Apex
GPU
Titan Xp with copper Water Block
RAM
Trident Z 3600C16 4x8gb's b-die default timings 16-16-16-36
Hard Drive
Samsung 970 Evo Plus 500gb M.2/ Samsung 850 Pro 256gb for os and 500gb evo for favorite games plus other wd hdd's for data and backup's
Optical Drive
LG Blu-Ray WH16NS40
Power Supply
evga 1200-P2
Cooling
2-280GTX Black Ice Nemesis rads with D5 pump-res combo and D5 top before and after rads.
Case
corsair 450D with added 2nd floor to house radiator on top
Operating System
Win-7 pro & 10 pro Win-7 Primary os.
Monitor
ASUS VG248QE 24" 144Hz
Keyboard
Logitech G910 Orion spectrum
Mouse
Redragon Perdition
Audio
Built in realtek and Insignia 2.0 soundbar HSB318
CPU
i7-5930k with Heatkiller IV Pro Plexi-Copper and koolance vrm water blocks
Motherboard
X99 Sabertooth
GPU
EVGA 1080ti FTW3 with Water block
RAM
Trident-Z 3200C14 4x8gb's b-die default timings 14-14-14-34
Hard Drive
Samsung 970 Evo 500gb M.2/ Samsung 850 Pro 256gb for os and 500gb evo for favorite games plus other wd hdd's for data and backup's
Power Supply
EVGA 1000-P2
Cooling
2-240 GTX Black Ice Nemesis rads/ D5 pump-res combo and D5 top before and after rads.
Case
Corsair 450D with added 2nd floor to house radiator on top
Operating System
Win-7 and 10 pro Win-7 Primary os.
Monitor
AOC G2460PG 24"G-Sync 144Hz
Mouse
Red Dragon Perdition
Audio
Built in realtek and Insignia 2.0 soundbar HSB318
Hard Drive
eLeaf MELO-3 4ml
Power Supply
SE US18650VTC6 3120mAh 30A 3.6V 18650 Li-ion Battery - GREENx4
Case
ANGIS Legion MOD 200w Geek Vape
Operating System
VapeWild RazzleBerry 50-50-0mg nic
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