Increasing Ambient Temps Effects - Overclock.net - An Overclocking Community

Forum Jump: 

Increasing Ambient Temps Effects

 
Thread Tools
post #1 of 10 (permalink) Old 10-11-2019, 03:22 AM - Thread Starter
AMD Overclocker
 
Alastair's Avatar
 
Join Date: Mar 2012
Location: Benoni (South Africa)
Posts: 6,139
Rep: 260 (Unique: 163)
Increasing Ambient Temps Effects

So I am busy chilling at home. Messing with my Rig trying to get some overclock runs in. And I am noticing something odd to me. Today I am doing my benching in 20C ambient temps. And during my TimeSpy runs. My Vega64 only hit around 32C on the core (stock clocks getting a baseline measurement)


However yesterday. I was benching in a 25C ambient. And my temps were at 42C on the core for stock clocks. Why are my deltas 5C over and above the ambient temps? I have 640mmX45mm of radiator space. I dunno surely my delta should remain roughly the same? So 12c delta would mean +-37c?



On my CPU I am seeing even larger jumps in the Delta. I decided to do a stress test at 20C on my FX 8370 (5GHz @ 1.5v). And I hit around 50C-55C core. But if I run the same stress test at 25C ambient my core hits the 70C limit. Why am I jumping nearly 20C for only a 5C ambient increase?

If You Can Cool It! You Can Clock It! (AMD's Vishera)
GHOST rev 3.5
(26 items)
Rura Penthe
(12 items)
CPU
AMD FX-8370 DELIDDED @ 5050MHz 1.535V 2660MHz NB/2925MHz HTT
Motherboard
ASUS M5A99FX PRO R2.0
GPU
Sapphire RX Vega 64 (stock)
RAM
Corsair Dominator Platinum 2666 32GB @ 2127 9-10-9-27
Hard Drive
Samsung 850 PRO 1TB
Hard Drive
WD Blue 500GB
Hard Drive
WD Blue 1 TB
Hard Drive
Samsung Spinpoint HD502HI
Power Supply
Antec High Current Pro Platinum 1300W
Cooling
XSPC D5 Bay Res
Cooling
1x CoolerMaster Storm Force 200
Cooling
XSPC Raystorm CPU Block
Cooling
EKWB Coolstream PE360
Cooling
6x CoolerMaster Jetflo's 120mm
Cooling
XSPC D5 Vario
Cooling
EKWB Coolstream CE280
Cooling
6 Corsair ML140's
Cooling
Barrow Vega 64 full cover waterblock.
Case
NZXT Phantom 820 Black
Operating System
Windows 10 Pro 64-Bit
Monitor
Dell SE2717H
Keyboard
Roccat Ryos MK Pro
Mouse
Mionix Naos 7000
Mouse
Mionix Alioth
Audio
GX Gaming SW-G2.1 3000
Audio
Kingston Hyper X Cloud Core
CPU
AMD Athlon 860K
Motherboard
Asus A88X-Pro
GPU
MSI R6850 Cyclone Power Edition
GPU
MSI R6850 Cyclone Power Edition
RAM
G-Skill Ares 2133 CL10 8GB (2x4GB)
Hard Drive
Seagate ST1000VX003
Optical Drive
Samsung HD502HI
Power Supply
Seagate M12II 620W
Cooling
Arctic Cooling Freezer A30
Case
Corsair Carbide SPEC-02
Operating System
Windows 10 Home Edition 64bit
Keyboard
Razer Lycrosa
CPU
Intel Celeron G1840
Motherboard
MSI Z97-Guard Pro
GPU
Gigabyte RX580 Gaming 4G
GPU
Gigabyte RX570 Gaming 4G
GPU
XFX RX480 reference edition 8G
GPU
Gigabyte RX570 Gaming 4g
GPU
Gigabyte RX570 Gaming 4G
RAM
G-Skill Ares F3-1600C9D
Hard Drive
Samsung 750 Evo 120GB
Power Supply
Gigabyte XP1200M
Cooling
Stock
Operating System
Windows 10 Pro
▲ hide details ▲
Alastair is online now  
Sponsored Links
Advertisement
 
post #2 of 10 (permalink) Old 10-11-2019, 04:44 AM
Hardware Princess
 
Hydroplane's Avatar
 
Join Date: Aug 2011
Location: Buffalo
Posts: 1,618
Rep: 28 (Unique: 25)
For me ambient temp makes roughly a linear difference. So if I drop the ambient 5C, my CPU temps might drop 4-6c. But this is on an open test bench. Heat can build up in cases. Same thing goes for cooling water in a custom loop. My temps are slightly lower when I first fire up versus running for a few hours.

CHILLER DESTRUCTION
Build Log - White Voodoo
Z390 Station
(11 items)
White Voodoo
(15 items)
CPU
9900K @ 5.4 1.50v
Motherboard
EVGA Z390 Dark
GPU
Titan RTX 2085/8500
RAM
Trident Z 3200c14 @ 4133c16 1.5v
Hard Drive
970 Evo Plus 250gb
Power Supply
silverstone 1200 from 2008 (other one exploded)
Cooling
HWLabs GTX 360 Rad (in RED)
Cooling
3x EK Vader 120mm 2200rpm Fans
Case
Dimastech Test Bench
Monitor
AOC Agon AG251FZ 240Hz
Audio
Built-in Monitor Speakers (3 watt)
CPU
7980XE @ 4.3 GHz 1.10v
Motherboard
Asus Rampage VI Apex
GPU
2 x Aorus Waterforce WB 1080 Ti @ 2037/6318
RAM
Trident Z 16gb 3200c14 @ 3800c16 1.50V (the other two sticks were sacrificed)
Hard Drive
960 Evo 1TB
Power Supply
EVGA 1600 T2
Cooling
HWLabs GTR 420+280 Rads
Cooling
7 x Noctua Industrial 140mm 3000 RPM Fans
Cooling
EK D5 Pump/Res (with RGB!)
Case
LD Cooling PC-V7
Operating System
Windows 10 LTSB
Monitor
NEC PA271W
Keyboard
Razer Blackwidow Chroma V2
Mouse
Logitech M510
Mousepad
anime tiddy mousepad
CPU
Dual Intel Xeon L5520 2.26 GHz
RAM
48 GB Samsung DDR3-1066
Hard Drive
120 GB Samsung 750 Evo SSD
Hard Drive
2 TB Western Digital Green
Hard Drive
2 TB Hitachi 7200 RPM
Power Supply
650W Delta PSU
Case
1U Rackmount
Operating System
Ubuntu Server 16.04
▲ hide details ▲
Hydroplane is offline  
post #3 of 10 (permalink) Old 10-14-2019, 08:18 AM
New to Overclock.net
 
broodro0ster's Avatar
 
Join Date: Jan 2016
Posts: 607
Rep: 3 (Unique: 3)
Quote: Originally Posted by Hydroplane View Post
For me ambient temp makes roughly a linear difference. So if I drop the ambient 5C, my CPU temps might drop 4-6c. But this is on an open test bench. Heat can build up in cases. Same thing goes for cooling water in a custom loop. My temps are slightly lower when I first fire up versus running for a few hours.
Same for me.

When my room heats up by 5°C, my water heats up by 5°C and my components also heat up by 5°C.
But what can happen if that the warm air stays trapped around the computer case if it sits in a corner so you're pulling constantly warmer and warmer air in the case.

My ambient temp around my PC case is usually 2°C higher than roomtemp, but when I open a window, the difference is gone because there is air circulation in the room and around the PC case.

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
Sennheiser HD598 + ModMic 4.0
▲ hide details ▲
broodro0ster is offline  
Sponsored Links
Advertisement
 
post #4 of 10 (permalink) Old 10-14-2019, 09:18 AM
New to Overclock.net
 
Ashcroft's Avatar
 
Join Date: Oct 2016
Posts: 1,108
Rep: 87 (Unique: 70)
Measuring ambient temp can be tricky. Unless you have sensors right at the intakes there are lots of ways for air temp being drawn into the PC to be affected.

In my system the ambient intake temp closely tracks along with all other temps.
Ashcroft is offline  
post #5 of 10 (permalink) Old 10-14-2019, 02:01 PM - Thread Starter
AMD Overclocker
 
Alastair's Avatar
 
Join Date: Mar 2012
Location: Benoni (South Africa)
Posts: 6,139
Rep: 260 (Unique: 163)
I have a thermal probe in my case just in front of my HDD cages. I guess it measures a mix between Internal Case Temps or what I refer to as ICT and the ambient air coming in. My ICT temp is 29C. Ambient currently is 24C.this is during a CPU stress test.

If You Can Cool It! You Can Clock It! (AMD's Vishera)
GHOST rev 3.5
(26 items)
Rura Penthe
(12 items)
CPU
AMD FX-8370 DELIDDED @ 5050MHz 1.535V 2660MHz NB/2925MHz HTT
Motherboard
ASUS M5A99FX PRO R2.0
GPU
Sapphire RX Vega 64 (stock)
RAM
Corsair Dominator Platinum 2666 32GB @ 2127 9-10-9-27
Hard Drive
Samsung 850 PRO 1TB
Hard Drive
WD Blue 500GB
Hard Drive
WD Blue 1 TB
Hard Drive
Samsung Spinpoint HD502HI
Power Supply
Antec High Current Pro Platinum 1300W
Cooling
XSPC D5 Bay Res
Cooling
1x CoolerMaster Storm Force 200
Cooling
XSPC Raystorm CPU Block
Cooling
EKWB Coolstream PE360
Cooling
6x CoolerMaster Jetflo's 120mm
Cooling
XSPC D5 Vario
Cooling
EKWB Coolstream CE280
Cooling
6 Corsair ML140's
Cooling
Barrow Vega 64 full cover waterblock.
Case
NZXT Phantom 820 Black
Operating System
Windows 10 Pro 64-Bit
Monitor
Dell SE2717H
Keyboard
Roccat Ryos MK Pro
Mouse
Mionix Naos 7000
Mouse
Mionix Alioth
Audio
GX Gaming SW-G2.1 3000
Audio
Kingston Hyper X Cloud Core
CPU
AMD Athlon 860K
Motherboard
Asus A88X-Pro
GPU
MSI R6850 Cyclone Power Edition
GPU
MSI R6850 Cyclone Power Edition
RAM
G-Skill Ares 2133 CL10 8GB (2x4GB)
Hard Drive
Seagate ST1000VX003
Optical Drive
Samsung HD502HI
Power Supply
Seagate M12II 620W
Cooling
Arctic Cooling Freezer A30
Case
Corsair Carbide SPEC-02
Operating System
Windows 10 Home Edition 64bit
Keyboard
Razer Lycrosa
CPU
Intel Celeron G1840
Motherboard
MSI Z97-Guard Pro
GPU
Gigabyte RX580 Gaming 4G
GPU
Gigabyte RX570 Gaming 4G
GPU
XFX RX480 reference edition 8G
GPU
Gigabyte RX570 Gaming 4g
GPU
Gigabyte RX570 Gaming 4G
RAM
G-Skill Ares F3-1600C9D
Hard Drive
Samsung 750 Evo 120GB
Power Supply
Gigabyte XP1200M
Cooling
Stock
Operating System
Windows 10 Pro
▲ hide details ▲
Alastair is online now  
post #6 of 10 (permalink) Old 10-14-2019, 02:05 PM
New to Overclock.net
 
skupples's Avatar
 
Join Date: Apr 2012
Location: Fort Lauderdale
Posts: 19,654
Rep: 563 (Unique: 321)
lower ambient, lower peak temp, if you have enough cooling potential.

R.I.P. Zawarudo, may you OC angels' wings in heaven.
If something appears too good to be true, it probably is.
skupples is online now  
post #7 of 10 (permalink) Old 10-14-2019, 05:27 PM
New to Overclock.net
 
D-EJ915's Avatar
 
Join Date: Aug 2011
Posts: 188
Rep: 4 (Unique: 4)
Lower ambient also means it takes more time for the pc running to heat up the room which leads to temperatures going up in the pc as well. This is why for torture tests companies use "hot boxes" so components heat soak quickly.

Kanna
(13 items)
Dark X299
(7 items)
Mitty
(11 items)
CPU
Intel i7-7820X
Motherboard
Asrock X299 OC Formula
GPU
Asus Strix 1080 Ti
RAM
G.Skill DDR C14 3200MHz XMP 4x8GB
Hard Drive
Intel P3520 NVMe PCIE AIC 1.2TB
Power Supply
Seasonic X-1250 1250 Watt PSU
Cooling
NZXT Kraken 62
Case
NZXT S340
Operating System
Windows 10 x64
Monitor
Asus PA329Q 32" 4k 60Hz
Keyboard
Corsair K70 RGB Lux
Mouse
Logitech G600
Audio
HDMI to my Yamaha CX-A5000 preamplifier and studio monitors.
CPU
Intel i9-9900X
Motherboard
EVGA X299 Dark
GPU
EVGA Geforce GTX 1080 Ti
RAM
G.Skill 4x8GB C14 3200MHz
Hard Drive
Samsung Pro 840 250 GB
Power Supply
EVGA Supernova G3 1300
Cooling
Phanteks PH-TC14PE
CPU
Intel i7-3930k
Motherboard
Asrock Fatal1ty X79 Champion
GPU
EVGA GTX 780 Ti
RAM
Mushkin Redline
Hard Drive
WD Velociraptor
Optical Drive
Asus DVD±RW
Power Supply
Seasonic X-1250
Cooling
Corsair H100i V2
Case
Fractal ARC MIDI
Operating System
Windows 7 Pro x64
Audio
Asus Xonar DX
▲ hide details ▲
D-EJ915 is offline  
post #8 of 10 (permalink) Old 10-14-2019, 06:50 PM
Overclocker in training
 
ThrashZone's Avatar
 
Join Date: Apr 2017
Posts: 7,788
Rep: 78 (Unique: 59)
Hi,
If you can control ambient you rule the day

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
▲ hide details ▲
ThrashZone is offline  
post #9 of 10 (permalink) Old 10-15-2019, 01:44 AM - Thread Starter
AMD Overclocker
 
Alastair's Avatar
 
Join Date: Mar 2012
Location: Benoni (South Africa)
Posts: 6,139
Rep: 260 (Unique: 163)
Quote: Originally Posted by ThrashZone View Post
Hi,
If you can control ambient you rule the day
Well I'm getting an AC installed. So yeah
South African summer is coming and we already hitting mid 30s Celsius so its gonna be a hot summer.

I have also delidded my FX cpu and gone direct to die cooling with conductonaut as my Tim. Which shaved 20C off the package

If You Can Cool It! You Can Clock It! (AMD's Vishera)
GHOST rev 3.5
(26 items)
Rura Penthe
(12 items)
CPU
AMD FX-8370 DELIDDED @ 5050MHz 1.535V 2660MHz NB/2925MHz HTT
Motherboard
ASUS M5A99FX PRO R2.0
GPU
Sapphire RX Vega 64 (stock)
RAM
Corsair Dominator Platinum 2666 32GB @ 2127 9-10-9-27
Hard Drive
Samsung 850 PRO 1TB
Hard Drive
WD Blue 500GB
Hard Drive
WD Blue 1 TB
Hard Drive
Samsung Spinpoint HD502HI
Power Supply
Antec High Current Pro Platinum 1300W
Cooling
XSPC D5 Bay Res
Cooling
1x CoolerMaster Storm Force 200
Cooling
XSPC Raystorm CPU Block
Cooling
EKWB Coolstream PE360
Cooling
6x CoolerMaster Jetflo's 120mm
Cooling
XSPC D5 Vario
Cooling
EKWB Coolstream CE280
Cooling
6 Corsair ML140's
Cooling
Barrow Vega 64 full cover waterblock.
Case
NZXT Phantom 820 Black
Operating System
Windows 10 Pro 64-Bit
Monitor
Dell SE2717H
Keyboard
Roccat Ryos MK Pro
Mouse
Mionix Naos 7000
Mouse
Mionix Alioth
Audio
GX Gaming SW-G2.1 3000
Audio
Kingston Hyper X Cloud Core
CPU
AMD Athlon 860K
Motherboard
Asus A88X-Pro
GPU
MSI R6850 Cyclone Power Edition
GPU
MSI R6850 Cyclone Power Edition
RAM
G-Skill Ares 2133 CL10 8GB (2x4GB)
Hard Drive
Seagate ST1000VX003
Optical Drive
Samsung HD502HI
Power Supply
Seagate M12II 620W
Cooling
Arctic Cooling Freezer A30
Case
Corsair Carbide SPEC-02
Operating System
Windows 10 Home Edition 64bit
Keyboard
Razer Lycrosa
CPU
Intel Celeron G1840
Motherboard
MSI Z97-Guard Pro
GPU
Gigabyte RX580 Gaming 4G
GPU
Gigabyte RX570 Gaming 4G
GPU
XFX RX480 reference edition 8G
GPU
Gigabyte RX570 Gaming 4g
GPU
Gigabyte RX570 Gaming 4G
RAM
G-Skill Ares F3-1600C9D
Hard Drive
Samsung 750 Evo 120GB
Power Supply
Gigabyte XP1200M
Cooling
Stock
Operating System
Windows 10 Pro
▲ hide details ▲
Alastair is online now  
post #10 of 10 (permalink) Old 10-15-2019, 09:10 AM
New to Overclock.net
 
broodro0ster's Avatar
 
Join Date: Jan 2016
Posts: 607
Rep: 3 (Unique: 3)
Quote: Originally Posted by Ashcroft View Post
Measuring ambient temp can be tricky. Unless you have sensors right at the intakes there are lots of ways for air temp being drawn into the PC to be affected.

In my system the ambient intake temp closely tracks along with all other temps.
Yes, my temp sensor sits outside the case about 3cm away from the intake fans so it isn't affected by the internal components. My PC and desk is located in the living room which has a pretty big volume and it doesn't heat up a lot from the PC under load. But in the area of 30cm around my PC case, there is trapped air that's about 2-3°C warmer than at the other side of my desk. So this means that hot exhausted air from my radiators is partially sucked back into the intake of my PC. Once I close my game, I see the temps of the air around my PC drop for 2-3°C. My PC is sitting along a wall, but not in a corner. If the PC was in corner, this effect would be worse.

And when I open 2 windows in my room so there is a constant circulation of air inside the room, my intake temps drop 2-3°C and it's equal to the ambient temp at the other side of my desk. So in summer when I open my windows, my roomtemp is 25°C, but I'm seeing the same component temps as in winter in a 22°C warm room without ventilation.
I bet having an AC inside the room that circulates air, gives the same results but with the benefits of a controlled environment.

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
Sennheiser HD598 + ModMic 4.0
▲ hide details ▲
broodro0ster is offline  
Reply

Quick Reply
Message:
Options

Register Now

In order to be able to post messages on the Overclock.net - An Overclocking Community forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.
User Name:
If you do not want to register, fill this field only and the name will be used as user name for your post.
Password
Please enter a password for your user account. Note that passwords are case-sensitive.
Password:
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:

Log-in



Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page


Forum Jump: 

Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off