X399 Taichi High VRM Temps
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=8025
Printed Date: 18 Jul 2025 at 12:16pm
Software Version: Web Wiz Forums 12.04 - http://www.webwizforums.com
Topic: X399 Taichi High VRM Temps
Posted By: Tbonephile
Subject: X399 Taichi High VRM Temps
Date Posted: 12 Mar 2018 at 6:09am
| " rel="nofollow - I have a X399 Taichi running a 1950x Threadripper at 1.375v at 4ghz, LLC is at level 3 SOC is at 1.05 and when I run Prime 95 Blender I hit 109c when it does small 8K FFT test and around 86c for the rest of the test. My CPUs Tdie are around 60c and do not exceed 80c for the small FFT test but my VRMs are super toasty. Is this normal? What are the limits of the VRM? I am running in a Corsair 540 with a Enermax Liqtech 360 infront as intake and ambient temperature is around 20c. |
Replies:
Posted By: TANWare
Date Posted: 12 Mar 2018 at 6:58am
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I can say no that is not normal. Highest I see @4GHz 1.35v on P95 is 55C for the VRM. I took CB R15 and for 30 minutes bashed the CPU and max VRM was 45C. At 1.35v P95 set to just small FTT crashed so I set to 1.375. After 15 minutes this was the result;  ------------- x399 Taichi, 1950x, 32GB 3466 DDR4 2x500GB 960EVO,Asus 1080TI http://www.pcambrosia.com/images/PassmarkEVO960_e.jpg" rel="nofollow - Passmark |
Posted By: Tbonephile
Date Posted: 12 Mar 2018 at 8:00am
| I just checked CPUID HWmonitor and I am also getting 49c, however in HWInfo64 I get those high temperatures (Highest 115 after 10 min Prime Small FFT) under VR T1 and VR T2. Now which is correct... |
Posted By: Tbonephile
Date Posted: 12 Mar 2018 at 8:11am
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" rel="nofollow - Seems like the reading from HWInfo64 are for the IR35201, or the digital multiphase controller, how is the VRM controller temperatures so much higher then the VRM? Any idea how high it can go? http://www.irf.com/product-info/datasheets/data/pb-ir35201.pdf |
Posted By: TANWare
Date Posted: 12 Mar 2018 at 8:25am
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" rel="nofollow -
HWinfo64 does not list the ir35201, which value are you looking at? my VR1 and VR2 only get in the 80c or so range. Nothing in the 100c or so except 107c on the CPU under ASRock x399 Taichi also (tctl) and that is the offset the CPU will display as AMD uses that plus value there of what seems to be +27c.
Ok, edit now did a 10 minute run and VRT1 and T2 got to 95c. I think CPU id reads the entire VRM and all rails where as the T! and T2 are just for the CPU rail.  ------------- x399 Taichi, 1950x, 32GB 3466 DDR4 2x500GB 960EVO,Asus 1080TI http://www.pcambrosia.com/images/PassmarkEVO960_e.jpg" rel="nofollow - Passmark |
Posted By: Tbonephile
Date Posted: 12 Mar 2018 at 8:31am
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Right here, I have the newest version of HWInfo64 and cupid hwmonitor, both downloaded today |
Posted By: TANWare
Date Posted: 12 Mar 2018 at 8:46am
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Can't see your pic, see my edit above though.
------------- x399 Taichi, 1950x, 32GB 3466 DDR4 2x500GB 960EVO,Asus 1080TI http://www.pcambrosia.com/images/PassmarkEVO960_e.jpg" rel="nofollow - Passmark |
Posted By: Tbonephile
Date Posted: 12 Mar 2018 at 8:47am
| I have hit as high as 110 now, running Prime 95 at 1.388v, I am sure people have run 1.40v in Prime for longer so I won't worry about it for now, but still a bit hot for my liking... |
Posted By: ssateneth
Date Posted: 12 Mar 2018 at 9:30am
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I have absolutely zero airflow in my PC (except for 1 exhaust as part of the power supply) and I'm looking at 100C VRM after about 10 minutes of prime95 small inplace fft, 4.1GHz @ 1.35v, no LLC (about 1.29v under P95), ~310 watts across CPU. With moderate airflow, it'd be in the area of 80-90C. So yeah if you are overclocking and using a lot of power, it's going to get hot. Like I said, I don't use LLC (don't believe in it, causes more dangers than it solves) so my load temperatures are lower.  ------------- MB: X399 Taichi, UEFI L3.32 VGA: EVGA 1080 Ti FTW3 PSU: Seasonic PRIME 1300 W PLATINUM CPU: AMD Ryzen Threadripper 2950X MEM: 4x16GB, 3600MHz G.Skill Trident Z F4-3600C17Q-64GTZKW |
Posted By: wardog
Date Posted: 12 Mar 2018 at 10:03am
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If either is using water cooling, it is REQUIRED to place an aux fan over the VRM section of the board. Most AiO Kit manuals I have read state so. AMD does also. |
Posted By: TANWare
Date Posted: 12 Mar 2018 at 12:04pm
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I had a spare 40mm fan I put right on top of the VRM and the VR T1 and T2 went from 95C max to 90C. Not much but I will take the reduction. Not that I even normally put the system through this stress day to day. ------------- x399 Taichi, 1950x, 32GB 3466 DDR4 2x500GB 960EVO,Asus 1080TI http://www.pcambrosia.com/images/PassmarkEVO960_e.jpg" rel="nofollow - Passmark |
Posted By: freakyyyy
Date Posted: 01 Mar 2019 at 11:16pm
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Hi bro I have VRM temp at 92C as soon as I boot my PC why? I have the same mobo! no O.C at all cause my CPU to drop speeds to 0.60Ghz! what should I do? |