• Welcome to TechPowerUp Forums, Guest! Please check out our forum guidelines for info related to our community.

is it normal for i3 8100 have higher temp than i5 8400 ?

Joined
Aug 10, 2008
Messages
291 (0.06/day)
Location
Saigon city
System Name Kurise PC
Processor i7 5820k 4,7ghz / Ryzen 1700x 4ghz / 8700k
Motherboard Asus X99 deluxe / MSI x370 gaming pro carbon / z370i strix
Cooling EK evo, xspc slim 360 rad, D5 pump, dual alpha cool GPU mono block, dual xspc 240 radiator, DDC 18w
Memory Crucial sport white 16gb x 8 128gb 2666mhz/ Crucial sport white 16gb x 4 64gb 2933 / ddr4 chinese 32
Video Card(s) GTX 1080Ti SLI / HP gtx 1080 SLI 1850/1520 / 2080ti ref
Storage Lite on 512GB x 3 / Plextor m2 256gb / samsung 970 evo
Display(s) AOC I2769Vm, AOC U3477PQU, AOC I2769Vm / Koios 40''/ eizo EV2730QFX 1:1
Case Xigmatek Elysium / Corsair 750D / Bitfenix prodigy M
Audio Device(s) creative blaster ZX / Blaster ZXR / Blaster x7 lmt + burson v5i upgraded
Power Supply Be Quiet 1200 / Thermaltake toughpower 1200w / chinese 750w sfx PSU
Mouse Asus Echelon/ steelseries black ops II/ james donkey
Keyboard Cm storm quickfire pro / Fire rose steampunk kb/ corsair k70
Software Windows 10
I just tested last night and find it very strange that the i3 8100 give me 63*c prime95 while the i5 8400 only 58*c ,theoretically the the i5 have higher clock plus 2 more cores mean it will generate more heat ......
 
Joined
Aug 10, 2008
Messages
291 (0.06/day)
Location
Saigon city
System Name Kurise PC
Processor i7 5820k 4,7ghz / Ryzen 1700x 4ghz / 8700k
Motherboard Asus X99 deluxe / MSI x370 gaming pro carbon / z370i strix
Cooling EK evo, xspc slim 360 rad, D5 pump, dual alpha cool GPU mono block, dual xspc 240 radiator, DDC 18w
Memory Crucial sport white 16gb x 8 128gb 2666mhz/ Crucial sport white 16gb x 4 64gb 2933 / ddr4 chinese 32
Video Card(s) GTX 1080Ti SLI / HP gtx 1080 SLI 1850/1520 / 2080ti ref
Storage Lite on 512GB x 3 / Plextor m2 256gb / samsung 970 evo
Display(s) AOC I2769Vm, AOC U3477PQU, AOC I2769Vm / Koios 40''/ eizo EV2730QFX 1:1
Case Xigmatek Elysium / Corsair 750D / Bitfenix prodigy M
Audio Device(s) creative blaster ZX / Blaster ZXR / Blaster x7 lmt + burson v5i upgraded
Power Supply Be Quiet 1200 / Thermaltake toughpower 1200w / chinese 750w sfx PSU
Mouse Asus Echelon/ steelseries black ops II/ james donkey
Keyboard Cm storm quickfire pro / Fire rose steampunk kb/ corsair k70
Software Windows 10
Joined
Jun 15, 2016
Messages
1,041 (0.44/day)
Location
Pristina
System Name My PC
Processor 4670K@4.4GHz
Motherboard Gryphon Z87
Cooling CM 212
Memory 2x8GB+2x4GB @2400GHz
Video Card(s) XFX Radeon RX 580 GTS Black Edition 1425MHz OC+, 8GB
Storage Intel 530 SSD 480GB + Intel 510 SSD 120GB + 2x500GB hdd raid 1
Display(s) HP envy 32 1440p
Case CM Mastercase 5
Audio Device(s) Sbz ZXR
Power Supply Antec 620W
Mouse G502
Keyboard G910
Software Win 10 pro
And what temps you get if you disable avx extensions(in Prime95!) for both cpus?
 
Joined
Aug 18, 2017
Messages
340 (0.18/day)
i3 has fixed clock.
i5 has turbo, and it's actual frequency is dependent on number of loaded cores and platform configuration regarding turbo itself, power limits, etc.
Doublecheck that the i5 actually runs at reasonably high frequency during test. Prime95 heavily loads the cpu, and that's almost certain that you are not getting 3800MHz allcore turbo (unless you tweaked motherboard settings).
 
Joined
Dec 31, 2009
Messages
19,353 (4.10/day)
Benchmark Scores Faster than yours... I'd bet on it. :)
I just tested last night and find it very strange that the i3 8100 give me 63*c prime95 while the i5 8400 only 58*c ,theoretically the the i5 have higher clock plus 2 more cores mean it will generate more heat ......
Heat and temperature are different things. Both output the same amount of heat (tdp is 65w for both cpus). Temperatures will vary depending on several factors, so yes, it sure can have a higher temp even with less cores and threads.

Think of it this way, which is hotter? A lighter with a yellow flame, or a bonfire with yellow flames? The answer, they are both the same temperature (yellow flame(s)) but clearly the bonfire has more heat energy.
 
Joined
Aug 10, 2008
Messages
291 (0.06/day)
Location
Saigon city
System Name Kurise PC
Processor i7 5820k 4,7ghz / Ryzen 1700x 4ghz / 8700k
Motherboard Asus X99 deluxe / MSI x370 gaming pro carbon / z370i strix
Cooling EK evo, xspc slim 360 rad, D5 pump, dual alpha cool GPU mono block, dual xspc 240 radiator, DDC 18w
Memory Crucial sport white 16gb x 8 128gb 2666mhz/ Crucial sport white 16gb x 4 64gb 2933 / ddr4 chinese 32
Video Card(s) GTX 1080Ti SLI / HP gtx 1080 SLI 1850/1520 / 2080ti ref
Storage Lite on 512GB x 3 / Plextor m2 256gb / samsung 970 evo
Display(s) AOC I2769Vm, AOC U3477PQU, AOC I2769Vm / Koios 40''/ eizo EV2730QFX 1:1
Case Xigmatek Elysium / Corsair 750D / Bitfenix prodigy M
Audio Device(s) creative blaster ZX / Blaster ZXR / Blaster x7 lmt + burson v5i upgraded
Power Supply Be Quiet 1200 / Thermaltake toughpower 1200w / chinese 750w sfx PSU
Mouse Asus Echelon/ steelseries black ops II/ james donkey
Keyboard Cm storm quickfire pro / Fire rose steampunk kb/ corsair k70
Software Windows 10




my specs is
z370i strix
adata 8gb x 2 2666 low profile memory
corsair vs 550w
cpu i5 8400/i3 8100/i7 8700k
the picture above is with the id cooling se 214 pro, i test i3 8100 which is 4 cores , i5 8400 6 cores , i7 8700k ( oc + normal 6c/12t ) and 9900k ( for df most of the time i guess ). i still have some 7700k, 6700k , 7600k but idk will people still use these or not. Will do many test include air, htpc coolers, aio, custom loops and some aio mod into custom

my bios setting is all auto but i remove the power limit
 
Joined
Oct 21, 2005
Messages
6,477 (1.04/day)
Location
USA
System Name Computer of Theseus
Processor Intel i9-12900KS: 50x Pcore multi @ 1.18Vcore (target 1.275V -100mv offset)
Motherboard EVGA Z690 Classified
Cooling NH-D15S, ThermalRight TY-143 fans, Corsair SP120L fans, Aquacomputer Splitty 9Active PWM Fan Hub
Memory G-Skill Trident Z5 (32GB) DDR5-6000 C36 F5-6000J3636F16GX2-TZ5RK
Video Card(s) EVGA Geforce 3060 XC Black Gaming 12GB
Storage 1x Samsung 970 Pro 512GB NVMe (OS), 2x Samsung 970 Evo Plus 2TB (data 1 and 2)
Display(s) Dell S3220DGF 32" 2560x1440 165Hz Primary, Dell P2017H 19.5" 1600x900 Secondary, Ergotron LX arms.
Case Lian Li O11 Air Mini
Audio Device(s) Audiotechnica ATH M50X + Antlion ModMic, Behringer 302USB Mixer
Power Supply Super Flower Leadex Platinum SE 1000W 80+ Platinum White
Mouse Zowie EC3-C
Keyboard Filco Majestouch 2 Tenkeyless Red
Software Win 10 LTSC 21H2
The gap between the metal heat spreader (lid) and the die varies from processor to processor. Some have a big gap, some don't. Your temperatures are perfectly normal. The maximum Intel specified temperature (TJunction) is 100 degrees C.
 
Joined
Aug 10, 2008
Messages
291 (0.06/day)
Location
Saigon city
System Name Kurise PC
Processor i7 5820k 4,7ghz / Ryzen 1700x 4ghz / 8700k
Motherboard Asus X99 deluxe / MSI x370 gaming pro carbon / z370i strix
Cooling EK evo, xspc slim 360 rad, D5 pump, dual alpha cool GPU mono block, dual xspc 240 radiator, DDC 18w
Memory Crucial sport white 16gb x 8 128gb 2666mhz/ Crucial sport white 16gb x 4 64gb 2933 / ddr4 chinese 32
Video Card(s) GTX 1080Ti SLI / HP gtx 1080 SLI 1850/1520 / 2080ti ref
Storage Lite on 512GB x 3 / Plextor m2 256gb / samsung 970 evo
Display(s) AOC I2769Vm, AOC U3477PQU, AOC I2769Vm / Koios 40''/ eizo EV2730QFX 1:1
Case Xigmatek Elysium / Corsair 750D / Bitfenix prodigy M
Audio Device(s) creative blaster ZX / Blaster ZXR / Blaster x7 lmt + burson v5i upgraded
Power Supply Be Quiet 1200 / Thermaltake toughpower 1200w / chinese 750w sfx PSU
Mouse Asus Echelon/ steelseries black ops II/ james donkey
Keyboard Cm storm quickfire pro / Fire rose steampunk kb/ corsair k70
Software Windows 10
Joined
Oct 21, 2005
Messages
6,477 (1.04/day)
Location
USA
System Name Computer of Theseus
Processor Intel i9-12900KS: 50x Pcore multi @ 1.18Vcore (target 1.275V -100mv offset)
Motherboard EVGA Z690 Classified
Cooling NH-D15S, ThermalRight TY-143 fans, Corsair SP120L fans, Aquacomputer Splitty 9Active PWM Fan Hub
Memory G-Skill Trident Z5 (32GB) DDR5-6000 C36 F5-6000J3636F16GX2-TZ5RK
Video Card(s) EVGA Geforce 3060 XC Black Gaming 12GB
Storage 1x Samsung 970 Pro 512GB NVMe (OS), 2x Samsung 970 Evo Plus 2TB (data 1 and 2)
Display(s) Dell S3220DGF 32" 2560x1440 165Hz Primary, Dell P2017H 19.5" 1600x900 Secondary, Ergotron LX arms.
Case Lian Li O11 Air Mini
Audio Device(s) Audiotechnica ATH M50X + Antlion ModMic, Behringer 302USB Mixer
Power Supply Super Flower Leadex Platinum SE 1000W 80+ Platinum White
Mouse Zowie EC3-C
Keyboard Filco Majestouch 2 Tenkeyless Red
Software Win 10 LTSC 21H2
i intend to open a modding pc or cpu heatsink store.....
Well no need to spend any money or time on cooling, it is perfectly fine for these CPUs to run in the 60s while under artificial load.
 
Joined
Dec 31, 2009
Messages
19,353 (4.10/day)
Benchmark Scores Faster than yours... I'd bet on it. :)
i intend to open a modding pc or cpu heatsink store.....
Wow.. GOod luck with that! :toast:

That said, your processes and procedures need to be tightened up a bit. Don't be the blind leading the blind. All of quite elementary questions are asked from an 11 year member about the process/other things... makes me nervous for you.
 
Last edited:
Joined
Aug 10, 2008
Messages
291 (0.06/day)
Location
Saigon city
System Name Kurise PC
Processor i7 5820k 4,7ghz / Ryzen 1700x 4ghz / 8700k
Motherboard Asus X99 deluxe / MSI x370 gaming pro carbon / z370i strix
Cooling EK evo, xspc slim 360 rad, D5 pump, dual alpha cool GPU mono block, dual xspc 240 radiator, DDC 18w
Memory Crucial sport white 16gb x 8 128gb 2666mhz/ Crucial sport white 16gb x 4 64gb 2933 / ddr4 chinese 32
Video Card(s) GTX 1080Ti SLI / HP gtx 1080 SLI 1850/1520 / 2080ti ref
Storage Lite on 512GB x 3 / Plextor m2 256gb / samsung 970 evo
Display(s) AOC I2769Vm, AOC U3477PQU, AOC I2769Vm / Koios 40''/ eizo EV2730QFX 1:1
Case Xigmatek Elysium / Corsair 750D / Bitfenix prodigy M
Audio Device(s) creative blaster ZX / Blaster ZXR / Blaster x7 lmt + burson v5i upgraded
Power Supply Be Quiet 1200 / Thermaltake toughpower 1200w / chinese 750w sfx PSU
Mouse Asus Echelon/ steelseries black ops II/ james donkey
Keyboard Cm storm quickfire pro / Fire rose steampunk kb/ corsair k70
Software Windows 10
Well no need to spend any money or time on cooling, it is perfectly fine for these CPUs to run in the 60s while under artificial load.
can i ask what to do when there is motherboard vr thermal throttling , this happen when i oc my 8700k to 4.7 the clock drop to 3.7 then back to 4.7 to keep the heat below 85 degree changing the vrm heatsink should solve this ?
 
Joined
Dec 31, 2009
Messages
19,353 (4.10/day)
Benchmark Scores Faster than yours... I'd bet on it. :)
Airflow around the power delivery area. Better heatsinks. The basics, yes.

What motherboard is doing this? 85C seems low temp for a quality vrm. I also thought vrm throttling knocked it back to 2.8 ghz. Are you sure it's the vrm doing this and not a current limit?
 
Joined
Aug 10, 2008
Messages
291 (0.06/day)
Location
Saigon city
System Name Kurise PC
Processor i7 5820k 4,7ghz / Ryzen 1700x 4ghz / 8700k
Motherboard Asus X99 deluxe / MSI x370 gaming pro carbon / z370i strix
Cooling EK evo, xspc slim 360 rad, D5 pump, dual alpha cool GPU mono block, dual xspc 240 radiator, DDC 18w
Memory Crucial sport white 16gb x 8 128gb 2666mhz/ Crucial sport white 16gb x 4 64gb 2933 / ddr4 chinese 32
Video Card(s) GTX 1080Ti SLI / HP gtx 1080 SLI 1850/1520 / 2080ti ref
Storage Lite on 512GB x 3 / Plextor m2 256gb / samsung 970 evo
Display(s) AOC I2769Vm, AOC U3477PQU, AOC I2769Vm / Koios 40''/ eizo EV2730QFX 1:1
Case Xigmatek Elysium / Corsair 750D / Bitfenix prodigy M
Audio Device(s) creative blaster ZX / Blaster ZXR / Blaster x7 lmt + burson v5i upgraded
Power Supply Be Quiet 1200 / Thermaltake toughpower 1200w / chinese 750w sfx PSU
Mouse Asus Echelon/ steelseries black ops II/ james donkey
Keyboard Cm storm quickfire pro / Fire rose steampunk kb/ corsair k70
Software Windows 10
Airflow around the power delivery area. Better heatsinks. The basics, yes.

What motherboard is doing this? 85C seems low temp for a quality vrm. I also thought vrm throttling knocked it back to 2.8 ghz. Are you sure it's the vrm doing this and not a current limit?
z370i strix asus the 85 degree is cpu temperature sorry my typing mistake. First i run into power limit show in intel XTU i go to bios set them to 4095 max all , this motherboard vr thermal throttling happen when i oc or whenever the cpu temp over 80*c ,
 
Joined
Dec 31, 2009
Messages
19,353 (4.10/day)
Benchmark Scores Faster than yours... I'd bet on it. :)
Does xtu show vrm thermal throttling?

The CPU temperature shouldnt cause vrm throttling.

But yeah, point some airflow at it and see if it stops.
 
Joined
Aug 10, 2008
Messages
291 (0.06/day)
Location
Saigon city
System Name Kurise PC
Processor i7 5820k 4,7ghz / Ryzen 1700x 4ghz / 8700k
Motherboard Asus X99 deluxe / MSI x370 gaming pro carbon / z370i strix
Cooling EK evo, xspc slim 360 rad, D5 pump, dual alpha cool GPU mono block, dual xspc 240 radiator, DDC 18w
Memory Crucial sport white 16gb x 8 128gb 2666mhz/ Crucial sport white 16gb x 4 64gb 2933 / ddr4 chinese 32
Video Card(s) GTX 1080Ti SLI / HP gtx 1080 SLI 1850/1520 / 2080ti ref
Storage Lite on 512GB x 3 / Plextor m2 256gb / samsung 970 evo
Display(s) AOC I2769Vm, AOC U3477PQU, AOC I2769Vm / Koios 40''/ eizo EV2730QFX 1:1
Case Xigmatek Elysium / Corsair 750D / Bitfenix prodigy M
Audio Device(s) creative blaster ZX / Blaster ZXR / Blaster x7 lmt + burson v5i upgraded
Power Supply Be Quiet 1200 / Thermaltake toughpower 1200w / chinese 750w sfx PSU
Mouse Asus Echelon/ steelseries black ops II/ james donkey
Keyboard Cm storm quickfire pro / Fire rose steampunk kb/ corsair k70
Software Windows 10
Does xtu show vrm thermal throttling?

The CPU temperature shouldnt cause vrm throttling.

But yeah, point some airflow at it and see if it stops.
yes XTU show vrm thermal throttling
 
Joined
Dec 31, 2009
Messages
19,353 (4.10/day)
Benchmark Scores Faster than yours... I'd bet on it. :)
Tiny arse motherboard with MEH VRMs... in presumably a tiny arse case... airflow.
 
Joined
Aug 10, 2008
Messages
291 (0.06/day)
Location
Saigon city
System Name Kurise PC
Processor i7 5820k 4,7ghz / Ryzen 1700x 4ghz / 8700k
Motherboard Asus X99 deluxe / MSI x370 gaming pro carbon / z370i strix
Cooling EK evo, xspc slim 360 rad, D5 pump, dual alpha cool GPU mono block, dual xspc 240 radiator, DDC 18w
Memory Crucial sport white 16gb x 8 128gb 2666mhz/ Crucial sport white 16gb x 4 64gb 2933 / ddr4 chinese 32
Video Card(s) GTX 1080Ti SLI / HP gtx 1080 SLI 1850/1520 / 2080ti ref
Storage Lite on 512GB x 3 / Plextor m2 256gb / samsung 970 evo
Display(s) AOC I2769Vm, AOC U3477PQU, AOC I2769Vm / Koios 40''/ eizo EV2730QFX 1:1
Case Xigmatek Elysium / Corsair 750D / Bitfenix prodigy M
Audio Device(s) creative blaster ZX / Blaster ZXR / Blaster x7 lmt + burson v5i upgraded
Power Supply Be Quiet 1200 / Thermaltake toughpower 1200w / chinese 750w sfx PSU
Mouse Asus Echelon/ steelseries black ops II/ james donkey
Keyboard Cm storm quickfire pro / Fire rose steampunk kb/ corsair k70
Software Windows 10
Tiny arse motherboard with MEH VRMs... in presumably a tiny arse case... airflow.
i took pictures above as post #7 a mini bench table room temp is 29 though. Thank you for suggesting the fan cooling the clock is stable now
 
Joined
Dec 31, 2009
Messages
19,353 (4.10/day)
Benchmark Scores Faster than yours... I'd bet on it. :)
29C ambient? Heh, that doesnt help at all. Most reasonable room temps are 22-23c. So you are already have an uphill battle.


I'd wait sometime to start your business...you have a lot to learn. :)
 

eidairaman1

The Exiled Airman
Joined
Jul 2, 2007
Messages
37,594 (6.68/day)
Location
Republic of Texas (True Patriot)
System Name PCGOD
Processor AMD FX 8350@ 5.0GHz
Motherboard Asus TUF 990FX Sabertooth R2 2901 Bios
Cooling Scythe Ashura, 2×BitFenix 230mm Spectre Pro LED (Blue,Green), 2x BitFenix 140mm Spectre Pro LED
Memory 16 GB Gskill Ripjaws X 2133 (2400 OC, 10-10-12-20-20, 1T, 1.65V)
Video Card(s) AMD Radeon 290 Sapphire Vapor-X
Storage Samsung 840 Pro 256GB, WD Velociraptor 1TB
Display(s) NEC Multisync LCD 1700V (Display Port Adapter)
Case AeroCool Xpredator Evil Blue Edition
Audio Device(s) Creative Labs Sound Blaster ZxR
Power Supply Seasonic 1250 XM2 Series (XP3)
Mouse Roccat Kone XTD
Keyboard Roccat Ryos MK Pro
Software Windows 7 Pro 64
It boils down to ihs and die quality and what heat transferring material is used between the die, IHS and HSF.

Remember core i3s are defective core i5/7s.
 
Joined
Aug 10, 2008
Messages
291 (0.06/day)
Location
Saigon city
System Name Kurise PC
Processor i7 5820k 4,7ghz / Ryzen 1700x 4ghz / 8700k
Motherboard Asus X99 deluxe / MSI x370 gaming pro carbon / z370i strix
Cooling EK evo, xspc slim 360 rad, D5 pump, dual alpha cool GPU mono block, dual xspc 240 radiator, DDC 18w
Memory Crucial sport white 16gb x 8 128gb 2666mhz/ Crucial sport white 16gb x 4 64gb 2933 / ddr4 chinese 32
Video Card(s) GTX 1080Ti SLI / HP gtx 1080 SLI 1850/1520 / 2080ti ref
Storage Lite on 512GB x 3 / Plextor m2 256gb / samsung 970 evo
Display(s) AOC I2769Vm, AOC U3477PQU, AOC I2769Vm / Koios 40''/ eizo EV2730QFX 1:1
Case Xigmatek Elysium / Corsair 750D / Bitfenix prodigy M
Audio Device(s) creative blaster ZX / Blaster ZXR / Blaster x7 lmt + burson v5i upgraded
Power Supply Be Quiet 1200 / Thermaltake toughpower 1200w / chinese 750w sfx PSU
Mouse Asus Echelon/ steelseries black ops II/ james donkey
Keyboard Cm storm quickfire pro / Fire rose steampunk kb/ corsair k70
Software Windows 10
29C ambient? Heh, that doesnt help at all. Most reasonable room temps are 22-23c. So you are already have an uphill battle.


I'd wait sometime to start your business...you have a lot to learn. :)
actually i'm in saigon south vietnam temperature here is quite high compare to EU or america , normally around 33-36 degree and not so many people use air conditioning though. I have few months to test around and learn more .
It boils down to ihs and die quality and what heat transferring material is used between the die, IHS and HSF.

Remember core i3s are defective core i5/7s.
oh........this remind me of amd phenom 2 3 cores
 
Last edited:
Joined
Aug 18, 2017
Messages
340 (0.18/day)
Remember core i3s are defective core i5/7s.
With few exceptions aside, this is simply not true.

Up to 7th gen, i3s used 2 core die, and i5/i7s used 4 core die.
8th gen i5/i7 use 6 core die (U0). 8th gen i3s use 4 core die (B0 - the same thing as 7th gen i7/i5s were).

Only recently - due to intel's cpu shortages - we can find on MB support pages that some specific i3/pentium models might come in U0 flavor.
But, since OP's i3 cpuid is 906EB, it is B0 die - the full, non-defective 4 core.
 
Top