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Is it bad while rendering on Cycles  at 300 my CPU goes up to 84-87c?

Setup

--------------

CPU: Intel I9-9900K [BCLK 100.80]

GPU: Gigabyte RTX 2070

MB: MSI - Z390 Gaming Pro

Memory: G.Skill - Ripjaws V Series 16 GB DDR4-3200 [XMP]

HDD: WD - Caviar Blue 1 TB 3.5" 7200RPM

SSD: SanDisk - Ultra 3D 500 GB 2.5"

M.2: Samsung 970 Evo Pro

Moniter: Asus - VG245H 75Hz

Moniter: Alienware - AW25148H 240Hz 

Moniter: Alienware - AW25148H 240Hz 

VR: Valve Index

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I try to run CPUs at under 85C sustained, but if it just peaks higher for very short periods it's fine.

What cooler are you using?

Desktop: Intel Core i9-9900K | ASUS Strix Z390-F | G.Skill Trident Z Neo 2x16GB 3200MHz CL14 | EVGA GeForce RTX 2070 SUPER XC Ultra | Corsair RM650x | Fractal Design Define R6

Laptop: 2018 Apple MacBook Pro 13"  --  i5-8259U | 8GB LPDDR3 | 512GB NVMe

Peripherals: Leopold FC660C w/ Topre Silent 45g | Logitech MX Master 3 & Razer Basilisk X HyperSpeed | HIFIMAN HE400se & iFi ZEN DAC | Audio-Technica AT2020USB+

Display: Gigabyte G34WQC

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Just now, Sauron said:

Depends on the cooler... it's a safe temperature either way

Rendering at 32 on Viewport just went up to 82 and my cooler is a https://www.arctic.ac/en/Liquid-Freezer-II-120/ACFRE00067A

Setup

--------------

CPU: Intel I9-9900K [BCLK 100.80]

GPU: Gigabyte RTX 2070

MB: MSI - Z390 Gaming Pro

Memory: G.Skill - Ripjaws V Series 16 GB DDR4-3200 [XMP]

HDD: WD - Caviar Blue 1 TB 3.5" 7200RPM

SSD: SanDisk - Ultra 3D 500 GB 2.5"

M.2: Samsung 970 Evo Pro

Moniter: Asus - VG245H 75Hz

Moniter: Alienware - AW25148H 240Hz 

Moniter: Alienware - AW25148H 240Hz 

VR: Valve Index

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Just now, ATK422 said:

Rendering at 32 on Viewport just went up to 82 and my cooler is a https://www.arctic.ac/en/Liquid-Freezer-II-120/ACFRE00067A

Ah, 120mm AIO. That's totally normal lol, if it worries you then swap to a 240/280mm AIO or chonky air cooler. But it's well below TjMax (typically 100C), and if you're running the chip stock it'll be fine doing that temp for extended periods. I never feel comfortable running an OCed chip hot, but stock ones will have 0 issues doing so, since they're well within the pretty conservative limits they're given. 

Gaming PC NAS Laptop Workstation

CPU: i5 12600KF 6P+4E Ryzen 7 3700X M4 SoC 4P+6E Xeon X5690 6c12t

Cooler: Noctua NH-D15S Wraith Stealth w/NF-A9 Passive Apple CPU Cooler

Motherboard: ASRock Z690 ITX/ax ASUS Pro B550M-C/CSM Apple J713AP Mac-F221BEC8 (Mac Pro 5,1)

RAM: 2x16GB 3600Mhz DDR4 2x16GB 2400MHz DDR4 24GB Micron LPDDR5 4x8GB 1333MHz ECC DDR3

GPU: Sapphire Pulse Radeon 9060 XT 16GB Radeon WX2100 M4 SoC 10C Radeon RX 5700

Storage: 1TB MP34 + 2TB P41 500GB SSD + 2x4TB IronWolf Pro in ZFS Mirror Apple AP0512Z 1TB Crucial MX500

ODD: LG WH14NS40 None LG GP65NB60 USB DVD Writer Don't know

PSU: EVGA 850W GM Silverstone SST-TX300 53.8Wh LiPo Battery Delta DPS-980BB

Case: Silverstone Sugo 14 Dell Inspiron 530S Mac16,12 chassis (13" MBA) 2009-2012 Mac Pro "Cheese Grater"

OS: Gentoo Linux TrueNAS Scale macOS 26 Tahoe Fedora Linux

 

Display: LG 27UK650-W (4K 60Hz IPS panel)

Mouse: EVGA X17

Keyboard: Corsair K55 RGB

 

Mobile/Work Devices: 14" M5P MacBook Pro (work) - iPhone 17 Pro - Apple Watch S11

 

Other Misc Devices: iPod Video (Gen 5.5E, iFlash Solo w/128GB SD Card, Rockbox), Nintendo Switch

 

Vehicles: 2002 Ford F150, 2003 Harley-Davidson Sportster 1200, 2022 Kawasaki KLR650, 1994 DR350SE

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Just now, Zando Bob said:

Ah, 120mm AIO. That's totally normal lol, if it worries you then swap to a 240/280mm AIO or chonky air cooler. But it's well below TjMax (typically 100C), and if you're running the chip stock it'll be fine doing that temp for extended periods. I never feel comfortable running an OCed chip hot, but stock ones will have 0 issues doing so, since they're well within the pretty conservative limits they're given. 

Okay thank's and yeah I am running it a bit OCed but like nothing at all since its for XMP [100.80 BCLK]

Setup

--------------

CPU: Intel I9-9900K [BCLK 100.80]

GPU: Gigabyte RTX 2070

MB: MSI - Z390 Gaming Pro

Memory: G.Skill - Ripjaws V Series 16 GB DDR4-3200 [XMP]

HDD: WD - Caviar Blue 1 TB 3.5" 7200RPM

SSD: SanDisk - Ultra 3D 500 GB 2.5"

M.2: Samsung 970 Evo Pro

Moniter: Asus - VG245H 75Hz

Moniter: Alienware - AW25148H 240Hz 

Moniter: Alienware - AW25148H 240Hz 

VR: Valve Index

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6 minutes ago, Mateyyy said:

I try to run CPUs at under 85C sustained, but if it just peaks higher for very short periods it's fine.

What cooler are you using?

https://www.arctic.ac/en/Liquid-Freezer-II-120/ACFRE00067A

 

Setup

--------------

CPU: Intel I9-9900K [BCLK 100.80]

GPU: Gigabyte RTX 2070

MB: MSI - Z390 Gaming Pro

Memory: G.Skill - Ripjaws V Series 16 GB DDR4-3200 [XMP]

HDD: WD - Caviar Blue 1 TB 3.5" 7200RPM

SSD: SanDisk - Ultra 3D 500 GB 2.5"

M.2: Samsung 970 Evo Pro

Moniter: Asus - VG245H 75Hz

Moniter: Alienware - AW25148H 240Hz 

Moniter: Alienware - AW25148H 240Hz 

VR: Valve Index

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Just now, ATK422 said:

Okay thank's and yeah I am running it a bit OCed but like nothing at all since its for XMP [100.80 BCLK]

Ah yeah, XMP shouldn't mess with CPU limits. If you have MCE (MultiCore Enhancement or something IIRC) on - some mobos enable it by default when XMP is enabled - that will OC your CPU, but otherwise XMP doesn't really touch the CPU itself. 

Gaming PC NAS Laptop Workstation

CPU: i5 12600KF 6P+4E Ryzen 7 3700X M4 SoC 4P+6E Xeon X5690 6c12t

Cooler: Noctua NH-D15S Wraith Stealth w/NF-A9 Passive Apple CPU Cooler

Motherboard: ASRock Z690 ITX/ax ASUS Pro B550M-C/CSM Apple J713AP Mac-F221BEC8 (Mac Pro 5,1)

RAM: 2x16GB 3600Mhz DDR4 2x16GB 2400MHz DDR4 24GB Micron LPDDR5 4x8GB 1333MHz ECC DDR3

GPU: Sapphire Pulse Radeon 9060 XT 16GB Radeon WX2100 M4 SoC 10C Radeon RX 5700

Storage: 1TB MP34 + 2TB P41 500GB SSD + 2x4TB IronWolf Pro in ZFS Mirror Apple AP0512Z 1TB Crucial MX500

ODD: LG WH14NS40 None LG GP65NB60 USB DVD Writer Don't know

PSU: EVGA 850W GM Silverstone SST-TX300 53.8Wh LiPo Battery Delta DPS-980BB

Case: Silverstone Sugo 14 Dell Inspiron 530S Mac16,12 chassis (13" MBA) 2009-2012 Mac Pro "Cheese Grater"

OS: Gentoo Linux TrueNAS Scale macOS 26 Tahoe Fedora Linux

 

Display: LG 27UK650-W (4K 60Hz IPS panel)

Mouse: EVGA X17

Keyboard: Corsair K55 RGB

 

Mobile/Work Devices: 14" M5P MacBook Pro (work) - iPhone 17 Pro - Apple Watch S11

 

Other Misc Devices: iPod Video (Gen 5.5E, iFlash Solo w/128GB SD Card, Rockbox), Nintendo Switch

 

Vehicles: 2002 Ford F150, 2003 Harley-Davidson Sportster 1200, 2022 Kawasaki KLR650, 1994 DR350SE

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Just now, ATK422 said:

Oh, that's actually better than expected then.

Desktop: Intel Core i9-9900K | ASUS Strix Z390-F | G.Skill Trident Z Neo 2x16GB 3200MHz CL14 | EVGA GeForce RTX 2070 SUPER XC Ultra | Corsair RM650x | Fractal Design Define R6

Laptop: 2018 Apple MacBook Pro 13"  --  i5-8259U | 8GB LPDDR3 | 512GB NVMe

Peripherals: Leopold FC660C w/ Topre Silent 45g | Logitech MX Master 3 & Razer Basilisk X HyperSpeed | HIFIMAN HE400se & iFi ZEN DAC | Audio-Technica AT2020USB+

Display: Gigabyte G34WQC

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7 minutes ago, ATK422 said:

Yea with a 120 that's perfectly fine. 

PC: Motherboard: ASUS B550M TUF-Plus, CPU: Ryzen 3 3100, CPU Cooler: Arctic Freezer 34, GPU: GIGABYTE WindForce GTX1650S, RAM: HyperX Fury RGB 2x8GB 3200 CL16, Case, CoolerMaster MB311L ARGB, Boot Drive: 250GB MX500, Game Drive: WD Blue 1TB 7200RPM HDD.

 

Peripherals: GK61 (Optical Gateron Red) with Mistel White/Orange keycaps, Logitech G102 (Purple), BitWit Ensemble Grey Deskpad. 

 

Audio: Logitech G432, Moondrop Starfield, Mic: Razer Siren Mini (White).

 

Phone: Pixel 3a (Purple-ish).

 

Build Log: 

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Just now, Zando Bob said:

Ah yeah, XMP shouldn't mess with CPU limits. If you have MCE (MultiCore Enhancement or something IIRC) on - some mobos enable it by default when XMP is enabled - that will OC your CPU, but otherwise XMP doesn't really touch the CPU itself. 

MSI Z390 Gaming Plus [MSI Click Bios 5]

Setup

--------------

CPU: Intel I9-9900K [BCLK 100.80]

GPU: Gigabyte RTX 2070

MB: MSI - Z390 Gaming Pro

Memory: G.Skill - Ripjaws V Series 16 GB DDR4-3200 [XMP]

HDD: WD - Caviar Blue 1 TB 3.5" 7200RPM

SSD: SanDisk - Ultra 3D 500 GB 2.5"

M.2: Samsung 970 Evo Pro

Moniter: Asus - VG245H 75Hz

Moniter: Alienware - AW25148H 240Hz 

Moniter: Alienware - AW25148H 240Hz 

VR: Valve Index

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19 minutes ago, Sauron said:

Depends on the cooler... it's a safe temperature either way

 

15 minutes ago, Zando Bob said:

Ah, 120mm AIO. That's totally normal lol, if it worries you then swap to a 240/280mm AIO or chonky air cooler. But it's well below TjMax (typically 100C), and if you're running the chip stock it'll be fine doing that temp for extended periods. I never feel comfortable running an OCed chip hot, but stock ones will have 0 issues doing so, since they're well within the pretty conservative limits they're given. 

What would you consider unsafe?

 

Setup

--------------

CPU: Intel I9-9900K [BCLK 100.80]

GPU: Gigabyte RTX 2070

MB: MSI - Z390 Gaming Pro

Memory: G.Skill - Ripjaws V Series 16 GB DDR4-3200 [XMP]

HDD: WD - Caviar Blue 1 TB 3.5" 7200RPM

SSD: SanDisk - Ultra 3D 500 GB 2.5"

M.2: Samsung 970 Evo Pro

Moniter: Asus - VG245H 75Hz

Moniter: Alienware - AW25148H 240Hz 

Moniter: Alienware - AW25148H 240Hz 

VR: Valve Index

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3 minutes ago, ATK422 said:

 

What would you consider unsafe?

 

considering how often people just don't monitor temps and nothing blows up for years, anything under 95C is fine, wouldn't worry about it unless it's 24/7 usage like that.

5950x 1.33v 5.05 4.5 88C 195w ll R20 12k ll drp4 ll x570 dark hero ll gskill 4x8gb 3666 14-14-14-32-320-24-2T (zen trfc)  1.45v 45C 1.15v soc ll 6950xt gaming x trio 325w 60C ll samsung 970 500gb nvme os ll sandisk 4tb ssd ll 6x nf12/14 ippc fans ll tt gt10 case ll evga g2 1300w ll w10 pro ll 34GN850B ll AW3423DW

 

9900k 1.36v 5.1avx 4.9ring 85C 195w (daily) 1.02v 4.3ghz 80w 50C R20 temps score=5500 ll D15 ll Z390 taichi ult 1.60 bios ll gskill 4x8gb 14-14-14-30-280-20 ddr3666bdie 1.45v 45C 1.22sa/1.18 io  ll EVGA 30 non90 tie ftw3 1920//10000 0.85v 300w 71C ll  6x nf14 ippc 2000rpm ll 500gb nvme 970 evo ll l sandisk 4tb sata ssd +4tb exssd backup ll 2x 500gb samsung 970 evo raid 0 llCorsair graphite 780T ll EVGA P2 1200w ll w10p ll NEC PA241w ll pa32ucg-k

 

prebuilt 5800 stock ll 2x8gb ddr4 cl17 3466 ll oem 3080 0.85v 1890//10000 290w 74C ll 27gl850b ll pa272w ll w11

 

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3 minutes ago, ATK422 said:

What would you consider unsafe?

For a stock chip? 99-100C. My mid-2012 MacBook Pro is 8 years old now, the CPUs in those regularly sit at 70-80, up to 97C under load, had 0 issues. And that's a mobile chip, the desktop lads are a bit beefier. Stock chips can run really close to TjMax for a really long time before giving out. It's only once you're pushing them beyond stock limits that I'd start worrying about temps a bunch. For me, I don't like to have OCed chips ever get over 80C, but it's acceptable if they hit 85 or so on some hotter chips. This is also in Prime95 though, normal workloads are far, far cooler. For example, my 6950X maxes out at 80C, but in actual use it rarely breaks 60C. 

Gaming PC NAS Laptop Workstation

CPU: i5 12600KF 6P+4E Ryzen 7 3700X M4 SoC 4P+6E Xeon X5690 6c12t

Cooler: Noctua NH-D15S Wraith Stealth w/NF-A9 Passive Apple CPU Cooler

Motherboard: ASRock Z690 ITX/ax ASUS Pro B550M-C/CSM Apple J713AP Mac-F221BEC8 (Mac Pro 5,1)

RAM: 2x16GB 3600Mhz DDR4 2x16GB 2400MHz DDR4 24GB Micron LPDDR5 4x8GB 1333MHz ECC DDR3

GPU: Sapphire Pulse Radeon 9060 XT 16GB Radeon WX2100 M4 SoC 10C Radeon RX 5700

Storage: 1TB MP34 + 2TB P41 500GB SSD + 2x4TB IronWolf Pro in ZFS Mirror Apple AP0512Z 1TB Crucial MX500

ODD: LG WH14NS40 None LG GP65NB60 USB DVD Writer Don't know

PSU: EVGA 850W GM Silverstone SST-TX300 53.8Wh LiPo Battery Delta DPS-980BB

Case: Silverstone Sugo 14 Dell Inspiron 530S Mac16,12 chassis (13" MBA) 2009-2012 Mac Pro "Cheese Grater"

OS: Gentoo Linux TrueNAS Scale macOS 26 Tahoe Fedora Linux

 

Display: LG 27UK650-W (4K 60Hz IPS panel)

Mouse: EVGA X17

Keyboard: Corsair K55 RGB

 

Mobile/Work Devices: 14" M5P MacBook Pro (work) - iPhone 17 Pro - Apple Watch S11

 

Other Misc Devices: iPod Video (Gen 5.5E, iFlash Solo w/128GB SD Card, Rockbox), Nintendo Switch

 

Vehicles: 2002 Ford F150, 2003 Harley-Davidson Sportster 1200, 2022 Kawasaki KLR650, 1994 DR350SE

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6 minutes ago, ATK422 said:

 

What would you consider unsafe?

 

Max for Intel is 105C. You obviously don't want to actually push it that far, but you're well under the thermal limits.

CPU: AMD Ryzen 9 9950X3D · Cooler: Noctua NH-D15S Chromax.black · Motherboard: Gigabyte Auros X670 Elite AX · RAM: G.Skill Flare X5 64GB (2 x 32GB) DDR5 6000MHz CL30 · Graphics Card: Zotac NVIDIA GeForce RTX 4070 Super Twin Edge OC 12GB · Boot Drive: 1TB XPG Gammix S70 Blade NVMe SSD · Game Drive: 2TB WD SN850X NVMe SSD · PSU: Seasonic Focus GX V3 1000W 80+ Gold · Case: Fractal Design North Mesh · Monitor: MSI Optix MAG342CQR 34” UWQHD 3440x1440 144Hz · Keyboard: EPOMAKER x Aula F99 Wireless Mechanical Keyboard · Mouse: Logitech G309 Lightspeed Wireless Gaming Mouse

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22 minutes ago, ATK422 said:

 

What would you consider unsafe?

 

Over 96°, as per the official spec. You can go up to 105° before the pc shuts itself down to prevent damage but at 96° you start throttling and losing performance really quickly.

Don't ask to ask, just ask... please 🤨

sudo chmod -R 000 /*

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