2700X temperature with CPB enabled
Printed From: ASRock.com
Category: Technical Support
Forum Name: AMD Motherboards
Forum Description: Question about ASRock AMD motherboards
URL: https://forum.asrock.com/forum_posts.asp?TID=11497
Printed Date: 05 Feb 2025 at 2:42pm
Software Version: Web Wiz Forums 12.04 - http://www.webwizforums.com
Topic: 2700X temperature with CPB enabled
Posted By: weekend7
Subject: 2700X temperature with CPB enabled
Date Posted: 16 May 2019 at 10:04pm
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I'm using Ryzen 2700X on X470 Master SLI(BIOS ver is 3.20). When enabling "Core Performance Boost (CPB)", temperature of CPU changes like sawtooth wave (fig.1). Is this behavior normal? fig.1 CPU temp with CPB ENABLED  fig.2 CPU temp with CPB DISABLED  |
Replies:
Posted By: xhue
Date Posted: 17 May 2019 at 12:26am
| What kind of work is your PC doing during both scenarios? |
Posted By: weekend7
Date Posted: 17 May 2019 at 1:24am
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I didn't do any works during measuring the temperatures. PC was in IDLE state. |
Posted By: xhue
Date Posted: 17 May 2019 at 1:26am
| Hmm, or so you thought. CPU/core/thread utilization + core clocks are also needed. |
Posted By: alander
Date Posted: 17 May 2019 at 2:16am
| That looks like it could be normal with CPB. I decided to just overclock my 2700x to around 4050 MHz on B450 Pro4 since that's what mine was normally when I ran it at default setting. I also didn't like seeing it at +1.45V even though it may only have been for a second and fine for short periods. |
Posted By: paologab
Date Posted: 17 May 2019 at 3:08pm
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hi, in idle (or so supposed) I too I've the same behaviour. ------------- AMD Ryzen 7 2700X w/Wraith prism x470 Taichi bios 3.50 16gb HX432C16PB3K2/16 (hynix H5AN8G8NCJR-UHC) M.2 970 EVO, SATA SSD, 2 SATA HDD AMD Radeon RX 580 8G OC Linux Kernel 5.4 Manjaro Stable XFCE |
Posted By: gizmic
Date Posted: 21 May 2019 at 3:20pm
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should be normal as its always trying to get the highest speed without crashing the system i think it would be clearer if you graph includes cpu speed and voltage ------------- 
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Posted By: xhue
Date Posted: 21 May 2019 at 3:55pm
| Why would it try to reach its max speed in idle? |
Posted By: gizmic
Date Posted: 21 May 2019 at 9:57pm
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yes it will still try thats why the speed changes with or no load it will change speeds and voltage -------------
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Posted By: xhue
Date Posted: 21 May 2019 at 10:54pm
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My Ryzens and TRs (a couple of them) all have CnQ and CPB enabled. I see nothing like OP is posting. I'm idling at ~2GHz and there is no jigsaw temp pattern. I'm on different mobos, though. |