kelkel1
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Friday, September 27, 2019 10:50 PM
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CPU-Z validation - https://valid.x86.fr/glgb24 As you can see, 75°C with less than 1.3VCore. This is with custom loop. Normal or too high?
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Sajin
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Re: CPU temps advice
Friday, September 27, 2019 10:55 PM
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Cool GTX
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Re: CPU temps advice
Friday, September 27, 2019 11:20 PM
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kelkel1 CPU-Z validation - https://valid.x86.fr/glgb24 As you can see, 75°C with less than 1.3VCore. This is with custom loop. Normal or too high?
Not too high - TJUNCTION = 100°C for that CPU ---> but not really much info in your post Room Temp ? Radiator & fans on loop ? What else is in the loop (GPU?) was it also under load & for how long Case How where you loading the CPU & for how long ?
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kelkel1
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Re: CPU temps advice
Friday, September 27, 2019 11:44 PM
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Cool GTX
kelkel1 CPU-Z validation - https://valid.x86.fr/glgb24 As you can see, 75°C with less than 1.3VCore. This is with custom loop. Normal or too high?
Not too high - TJUNCTION = 100°C for that CPU
---> but not really much info in your post
Room Temp ? Radiator & fans on loop ? What else is in the loop (GPU?) was it also under load & for how long Case How where you loading the CPU & for how long ?
23°C-25°C ambient. External 3 x 140 radiator with 95CFM fans. Only CPU in loop. I was referring to the CPU-Z validator, which takes a few seconds. Stress tests such as LinX or P95 cause thermal throttling (+100°C) unless AVX offset is 3. The CPU-Z validation was run with AVX offset at 0.
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d.burnette
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Re: CPU temps advice
Saturday, September 28, 2019 0:20 PM
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9900k running at 5.2 GHz on all 8 cores with a vcore of less than 1.3 under load and core temp of 75c is pretty sweet.
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kelkel1
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Re: CPU temps advice
Saturday, September 28, 2019 11:31 AM
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d.burnette 9900k running at 5.2 GHz on all 8 cores with a vcore of less than 1.3 under load and core temp of 75c is pretty sweet.
But 75°C in CPU-Z validation?
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rjohnson11
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Re: CPU temps advice
Saturday, September 28, 2019 11:49 AM
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Personally if this were my rig I would bump down the clock to about 5.1GHZ and if the temps stay at 75C under load then you're fine.
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kelkel1
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Re: CPU temps advice
Saturday, September 28, 2019 1:11 PM
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rjohnson11 Personally if this were my rig I would bump down the clock to about 5.1GHZ and if the temps stay at 75C under load then you're fine.
I actually use 4900MHz CPU and 4500MHz memory clocks as my 24/7.
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kelkel1
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Re: CPU temps advice
Sunday, September 29, 2019 1:26 PM
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Is there any comprehensive (and I mean detailed, step-by step, hold my hand all the way) overclocking guide for the Z390 Dark? I believe I should be getting better temps, I must have something set wrong in BIOS, probably voltage wise.
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bob16314
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Re: CPU temps advice
Sunday, September 29, 2019 2:23 PM
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kelkel1
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Re: CPU temps advice
Sunday, September 29, 2019 4:58 PM
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d.burnette
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Re: CPU temps advice
Sunday, September 29, 2019 11:11 PM
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Seems toasty for a custom cooling loop. As previously suggested I would back it down to 5 or 5.1 on all cores and see if you can get that cpu vcore lowered a little more. Also it appears you running with HT (Hyperthreading) enabled in the bios. If so try disabling it, would lower your core temps a few degrees. I personally have mine disabled as my main focus is on gaming, which HT really does not do much for.
post edited by d.burnette - Sunday, September 29, 2019 11:29 PM
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bob16314
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Re: CPU temps advice
Monday, September 30, 2019 5:28 AM
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From reading reviews, those processors do seem to run hot. What CPU cooler are you using? The only things I can say is try to get the Vcore down or change the Load Line Calibration (Vdroop) so that the Vcore doesn't increase much, or at all, under load. Get a better CPU cooler and/or apply some liquid metal TIM like Thermal Grizzy Conductonaut between the cooler and processor IHS..And if you really want to, delid the (soldered on) IHS from the CPU die and use liquid metal TIM there too. Or don't worry about it, the cores won't throttle until 100C, that's the TjMax temp, anything less than that is fine but it's generally accepted that anything more than 10C below TjMax is good. Nothing you can do about it getting hot when running AVX except to increase the AVX Offset so that it downclocks when running AVX. Also, just run IBT at a Standard Stress Level and not Maximum. And you should be running at maximum cooling, fans and pump at 100%.
post edited by bob16314 - Monday, September 30, 2019 5:44 AM
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kelkel1
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Re: CPU temps advice
Monday, September 30, 2019 8:08 PM
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d.burnette Seems toasty for a custom cooling loop. <SNIP>
That is what I thought.
post edited by kelkel1 - Monday, September 30, 2019 8:12 PM
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kelkel1
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Re: CPU temps advice
Monday, September 30, 2019 8:10 PM
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bob16314 From reading reviews, those processors do seem to run hot.
What CPU cooler are you using?
The only things I can say is try to get the Vcore down or change the Load Line Calibration (Vdroop) so that the Vcore doesn't increase much, or at all, under load.
Get a better CPU cooler and/or apply some liquid metal TIM like Thermal Grizzy Conductonaut between the cooler and processor IHS..And if you really want to, delid the (soldered on) IHS from the CPU die and use liquid metal TIM there too.
Or don't worry about it, the cores won't throttle until 100C, that's the TjMax temp, anything less than that is fine but it's generally accepted that anything more than 10C below TjMax is good.
Nothing you can do about it getting hot when running AVX except to increase the AVX Offset so that it downclocks when running AVX.
Also, just run IBT at a Standard Stress Level and not Maximum.
And you should be running at maximum cooling, fans and pump at 100%.
See post #4 above.
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kelkel1
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Re: CPU temps advice
Monday, September 30, 2019 8:11 PM
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What about VCCIO and VSA?
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kelkel1
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Re: CPU temps advice
Thursday, October 03, 2019 0:03 PM
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No-one thinks the VSA or VCCIO are too high? I had read somewhere that those voltages can affect CPU temps.
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Cool GTX
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Re: CPU temps advice
Thursday, October 03, 2019 1:39 AM
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kelkel1 No-one thinks the VSA or VCCIO are too high? I had read somewhere that those voltages can affect CPU temps.
What are your Values ? VSA Default = 1.05 VCCIO Default = 0.95 Good Read: https://xdevs.com/guide/e399ocg/
(excerpt) Usually good rule of thumb is to use around 1.20 … 1.35 V on VCCIO and VSA rails. These voltage levels provide enough margin to maximize memory overclocking for common CoffeeLake CPU. For 24/7 daily use optimal to use 1.25 V or below, given this is enough for desired memory and CPU clocks. If you having stability issues DDR4 overclocking, worth to try various settings, in range from 1.15 to 1.35 V to isolate bottleneck. Some CPUs and memory configurations actually may become unstable when VCCSA voltage is over 1.30 V, so testing both of these voltage might take some time to reach a sweetspot. Memory voltage is also important factor to the system stability. Because this finetuning is dependent on particular CPU sample and memory used we cannot give one set of settings that will work for every case. It’s bit of a process here.
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kelkel1
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Re: CPU temps advice
Thursday, October 03, 2019 8:14 PM
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Cool GTX
kelkel1 No-one thinks the VSA or VCCIO are too high? I had read somewhere that those voltages can affect CPU temps.
What are your Values ?
VSA Default = 1.05 VCCIO Default = 0.95 Good Read: https://xdevs.com/guide/e399ocg/
(excerpt) Usually good rule of thumb is to use around 1.20 … 1.35 V on VCCIO and VSA rails. These voltage levels provide enough margin to maximize memory overclocking for common CoffeeLake CPU. For 24/7 daily use optimal to use 1.25 V or below, given this is enough for desired memory and CPU clocks. If you having stability issues DDR4 overclocking, worth to try various settings, in range from 1.15 to 1.35 V to isolate bottleneck. Some CPUs and memory configurations actually may become unstable when VCCSA voltage is over 1.30 V, so testing both of these voltage might take some time to reach a sweetspot. Memory voltage is also important factor to the system stability. Because this finetuning is dependent on particular CPU sample and memory used we cannot give one set of settings that will work for every case. It’s bit of a process here.
I had posted the screenshot of HWiNFO showing every sensor reading in post #11 above. On AUTO, in BIOS they are: VSA=1.41V, VCCIO=1.408V.
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Cool GTX
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Re: CPU temps advice
Thursday, October 03, 2019 8:19 PM
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yes, I saw the eye test you posted the numbers did not Jump out, though it easier to ask according to xdevs 1.4xxx V - is on the high side, time to try stability testing at lower range 1.15 - 1.35 V [Daily use 1.25 V or less] If you do Not know - that article on xdevs was written by the EE on the EVGA Dark Development Team - TiN_EE EVGA Z390 DARK toolbox - OC software, tips and tricks, BIOS profiles, etc
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kelkel1
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Re: CPU temps advice
Thursday, October 03, 2019 9:09 PM
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Cool GTX yes, I saw the eye test you posted  the numbers did not Jump out, though it easier to ask
according to xdevs 1.4xxx V - is on the high side, time to try stability testing at lower range 1.15 - 1.35 V [Daily use 1.25 V or less] If you do Not know - that article on xdevs was written by the EE on the EVGA Dark Development Team - TiN_EE EVGA Z390 DARK toolbox - OC software, tips and tricks, BIOS profiles, etc
Thanks for the tip. Lowed both to 1.3V, currently running HCI Memtest, 16 instances with 1000MB each. Hopefully, it will pass 1000% with no errors.
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bob16314
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Re: CPU temps advice
Friday, October 04, 2019 4:50 AM
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kelkel1 No-one thinks the VSA or VCCIO are too high? I had read somewhere that those voltages can affect CPU temps.
Yes and no. Your VCCIO and VCCSA is much more than is probably needed, but won't affect CPU temp any (doesn't for me at least)..My VCCIO and VCCSA on [Auto] run 1.424/1.416 respectively..I set them down to 1.20/1.25 respectively and still maintain stability (much less pass POST) for my CPU/RAM overclock of 5.2GHz/4000MHz. I see your Vcore is hitting 1.4 Max under load in HWiNFO, that's probably more than needed too and why your CPU/Core temps are higher..Try to get that down as much as you can by either changing the Load-line Calibration and/or the Vcore Offset.
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kelkel1
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Re: CPU temps advice
Friday, October 04, 2019 8:01 PM
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bob16314
kelkel1 No-one thinks the VSA or VCCIO are too high?
I had read somewhere that those voltages can affect CPU temps.
Yes and no.
Your VCCIO and VCCSA is much more than is probably needed, but won't affect CPU temp any (doesn't for me at least)..My VCCIO and VCCSA on [Auto] run 1.424/1.416 respectively..I set them down to 1.20/1.25 respectively and still maintain stability (much less pass POST) for my CPU/RAM overclock of 5.2GHz/4000MHz.
I see your Vcore is hitting 1.4 Max under load in HWiNFO, that's probably more than needed too and why your CPU/Core temps are higher..Try to get that down as much as you can by either changing the Load-line Calibration and/or the Vcore Offset.
OK, I will try the VCore adjustment. The Memtest ran overnight, 1300% with no errors, so 1.3V is stable for 4500MHz RAM frequency it appears. Other than VCore, what else would help with temps?
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bob16314
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Re: CPU temps advice
Friday, October 04, 2019 8:29 PM
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kelkel1 Other than VCore, what else would help with temps?
In your situation, with liquid cooling already, I would grab some liquid metal TIM like in my Post #13 above, the stuff is marvelous..But you need to watch the Vcore under load, that's what matters most as far as voltage goes.
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kelkel1
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Re: CPU temps advice
Saturday, October 05, 2019 1:07 PM
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bob16314
kelkel1 Other than VCore, what else would help with temps?
In your situation, with liquid cooling already, I would grab some liquid metal TIM like in my Post #13 above, the stuff is marvelous..But you need to watch the Vcore under load, that's what matters most as far as voltage goes.
OK, thanks. I have already relidded the CPU with a RockitCool copper IHS, using Conductonaut between it and the die. Kryonaut on the waterblock. I hesitate to use LM on the copper IHS and waterblock, after reading about it sometimes 'gluing' the two together after some time. I just ordered a Heatkiller IV PRO Nickel block and a RockitCool direct die kit. Going to try without the IHS and see if that does any better. Still working on adjusting the VCore.
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bob16314
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Re: CPU temps advice
Saturday, October 05, 2019 3:01 PM
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kelkel1 I have already relidded the CPU with a RockitCool copper IHS, using Conductonaut between it and the die. Kryonaut on the waterblock. I hesitate to use LM on the copper IHS and waterblock, after reading about it sometimes 'gluing' the two together after some time.
Good very good/informative video here from Gamers Nexus about How Liquid Metal Affects Copper, Nickel, and Aluminum (Corrosion Test) kelkel1 I just ordered a Heatkiller IV PRO Nickel block and a RockitCool direct die kit. Going to try without the IHS and see if that does any better. Still working on adjusting the VCore.
Cool, been thinking of going direct-die myself one of these days when I get motivated, heheh..Hope it works out good, let us know..And yeah, get the Vcore down as much as possible under load.
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kelkel1
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Re: CPU temps advice
Thursday, October 17, 2019 9:45 PM
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So, Got the HK IV block, RockitCool direct die kit. Running LinX 0.9.5 at 5000 MHz, 1.31 VCore, HT on, AVX offset at 0, maximum memory used, I previously was getting 72°C CPU Core Max. Today, it is 66°C.
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Cool GTX
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Re: CPU temps advice
Thursday, October 17, 2019 10:38 PM
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 nice numbers
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