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Less heat = more stability?

Hi!!! I have a cpu at 5.3ghz which at the voltage I want, is a tad unstable (seems to bluescreen after a few hours of any type of load, and then will continue bluescreening until I leave it a while).

 

Is this because the cpu is heating up more and more over time and reaching a temperature where it decreases the stability of the overclock? 

 

So basically could it be that my cpu is more unstable at 80 degrees than it is at 70? And will keeping it at a max of 70 keep the system from bluescreening? (all theoretical of course)

i5 7600k @5.2ghz 1.39v i7 7700k @5.1ghz 1.39v / Strix z270h / 16gb Trident z RGB 3200mhz CL16 1.35v (2400mhz CL15 kit overclocked) / GTX 1070ti sli both with Arctic Accelero Xtreme iv coolers / EVGA 750w Gold PSU

Samsung cf791 3440x1440 100hz Quantum Dot

 

Haven't broken something with an OC yet... YET.

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yeah, lower temps more stability. Not sure why though.

CPU: i7-2600K 4751MHz 1.44V (software) --> 1.47V at the back of the socket Motherboard: Asrock Z77 Extreme4 (BCLK: 103.3MHz) CPU Cooler: Noctua NH-D15 RAM: Adata XPG 2x8GB DDR3 (XMP: 2133MHz 10-11-11-30 CR2, custom: 2203MHz 10-11-10-26 CR1 tRFC:230 tREFI:14000) GPU: Asus GTX 1070 Dual (Super Jetstream vbios, +70(2025-2088MHz)/+400(8.8Gbps)) SSD: Samsung 840 Pro 256GB (main boot drive), Transcend SSD370 128GB PSU: Seasonic X-660 80+ Gold Case: Antec P110 Silent, 5 intakes 1 exhaust Monitor: AOC G2460PF 1080p 144Hz (150Hz max w/ DP, 121Hz max w/ HDMI) TN panel Keyboard: Logitech G610 Orion (Cherry MX Blue) with SteelSeries Apex M260 keycaps Mouse: BenQ Zowie FK1

 

Model: HP Omen 17 17-an110ca CPU: i7-8750H (0.125V core & cache, 50mV SA undervolt) GPU: GTX 1060 6GB Mobile (+80/+450, 1650MHz~1750MHz 0.78V~0.85V) RAM: 8+8GB DDR4-2400 18-17-17-39 2T Storage: HP EX920 1TB PCIe x4 M.2 SSD + Crucial MX500 1TB 2.5" SATA SSD, 128GB Toshiba PCIe x2 M.2 SSD (KBG30ZMV128G) gone cooking externally, 1TB Seagate 7200RPM 2.5" HDD (ST1000LM049-2GH172) left outside Monitor: 1080p 126Hz IPS G-sync

 

Desktop benching:

Cinebench R15 Single thread:168 Multi-thread: 833 

SuperPi (v1.5 from Techpowerup, PI value output) 16K: 0.100s 1M: 8.255s 32M: 7m 45.93s

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Just now, Jurrunio said:

yeah, lower temps more stability. Not sure why though.

Thanks!!!

 

Can anyone explain why?

i5 7600k @5.2ghz 1.39v i7 7700k @5.1ghz 1.39v / Strix z270h / 16gb Trident z RGB 3200mhz CL16 1.35v (2400mhz CL15 kit overclocked) / GTX 1070ti sli both with Arctic Accelero Xtreme iv coolers / EVGA 750w Gold PSU

Samsung cf791 3440x1440 100hz Quantum Dot

 

Haven't broken something with an OC yet... YET.

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Just now, rfcokilljoy said:

Thanks!!!

 

Can anyone explain why?

its at least partly because the material properties change with temperature, from one side the lower the temp the better the cpu interconnects conduct current and with lower temps also come lower leakage on the transistors themselves which leads to less power usage and better frequency performance, this is the reason for people being able to overclock further on water as it cools the cpus a bit better

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8 minutes ago, rfcokilljoy said:

Thanks!!!

 

Can anyone explain why?

Complicated Science: https://www.quora.com/Why-does-increasing-exothermicity-mean-less-stability

CPU: Intel Core i7-950 Motherboard: Gigabyte GA-X58A-UD3R CPU Cooler: NZXT HAVIK 140 RAM: Corsair Dominator DDR3-1600 (1x2GB), Crucial DDR3-1600 (2x4GB), Crucial Ballistix Sport DDR3-1600 (1x4GB) GPU: ASUS GeForce GTX 770 DirectCU II 2GB SSD: Samsung 860 EVO 2.5" 1TB HDDs: WD Green 3.5" 1TB, WD Blue 3.5" 1TB PSU: Corsair AX860i & CableMod ModFlex Cables Case: Fractal Design Meshify C TG (White) Fans: 2x Dynamic X2 GP-12 Monitors: LG 24GL600F, Samsung S24D390 Keyboard: Logitech G710+ Mouse: Logitech G502 Proteus Spectrum Mouse Pad: Steelseries QcK Audio: Bose SoundSport In-Ear Headphones

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12 minutes ago, Jurrunio said:

yeah, lower temps more stability. Not sure why though.

Because the Silicon works more reliable at lower temperatures...

And of course the resistance of materials usually increases with higher temperature as well.

"Hell is full of good meanings, but Heaven is full of good works"

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Thanks for all the answers guys!!! I will be lowering the voltage of my RAM then so my IMC produces less heat.

i5 7600k @5.2ghz 1.39v i7 7700k @5.1ghz 1.39v / Strix z270h / 16gb Trident z RGB 3200mhz CL16 1.35v (2400mhz CL15 kit overclocked) / GTX 1070ti sli both with Arctic Accelero Xtreme iv coolers / EVGA 750w Gold PSU

Samsung cf791 3440x1440 100hz Quantum Dot

 

Haven't broken something with an OC yet... YET.

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15 minutes ago, rfcokilljoy said:

Thanks for all the answers guys!!! I will be lowering the voltage of my RAM then so my IMC produces less heat.

You'll want to reduce the uncore voltage of your cpu (uncore is the part of the cpu that is "everything not a core", so things like pci express controller, memory controller, etc) to reduce your IMC heat generation; the ram voltage only determines how much voltage is used to power your ram modules themselves.

 

This is assuming you're referring to the i5-7600K listed in your signature; some earlier intel chips had memory voltage routed via the IMC, but that isn't the case any more.

 

However, worth noting that the amount of heat generated by the memory controller is very low compared to the actual cores, so even a large reduction in voltage isn't likely to reduce your overall heat generation. IF your CPU is running  a lot hotter than you'd like, you'd be better served trying to reduce your core voltage, but that might not be possible in your case as you have a very aggressive overclock in place.

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2 hours ago, Tabs said:

You'll want to reduce the uncore voltage of your cpu (uncore is the part of the cpu that is "everything not a core", so things like pci express controller, memory controller, etc) to reduce your IMC heat generation; the ram voltage only determines how much voltage is used to power your ram modules themselves.

 

This is assuming you're referring to the i5-7600K listed in your signature; some earlier intel chips had memory voltage routed via the IMC, but that isn't the case any more.

 

However, worth noting that the amount of heat generated by the memory controller is very low compared to the actual cores, so even a large reduction in voltage isn't likely to reduce your overall heat generation. IF your CPU is running  a lot hotter than you'd like, you'd be better served trying to reduce your core voltage, but that might not be possible in your case as you have a very aggressive overclock in place.

i do have to disagree with you disagreeing with me lowering the dram voltage, not necessarily disagreeing that its the imc heating up though, as I had just always assumed. Anyways, having a DRAM voltage of 1.2 vs 1.5 makes my cpu drop around 20 degrees in prime95/when rendering in 3ds max. I once actually was running my ram at 1.025v and my cpu temps were at around 55 in prime. This may sound made up but i will provide screenshots if you wish.

 

since my post i have reduced it from 1.375v to 1.2v and it's dropped from spikes of 84 degrees to 72 degrees.

 

I will also drop uncore though after looking into it! so thankyou. Edit - this is just cache right? I think I might leave it at the multiplier of 48 and the power limit maxed as it affects performance

i5 7600k @5.2ghz 1.39v i7 7700k @5.1ghz 1.39v / Strix z270h / 16gb Trident z RGB 3200mhz CL16 1.35v (2400mhz CL15 kit overclocked) / GTX 1070ti sli both with Arctic Accelero Xtreme iv coolers / EVGA 750w Gold PSU

Samsung cf791 3440x1440 100hz Quantum Dot

 

Haven't broken something with an OC yet... YET.

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