F5F Stay Refreshed Hardware Desktop Inquiry regarding VRM temperature during a 10-minute cinebench R23 throttle test

Inquiry regarding VRM temperature during a 10-minute cinebench R23 throttle test

Inquiry regarding VRM temperature during a 10-minute cinebench R23 throttle test

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wouterretuow
Member
50
11-01-2022, 01:25 AM
#1
I recently upgraded to a new setup with these details: CPU model i5 13500, motherboard Gigabyte B760m DS3H, DDR4 RAM 16x2, CPU cooler Deepcool Ak400. I increased power limits from 65 to 90W and 120W for the first two cores. During Cinebench R23 on a 10-minute test, my CPU stayed below 78°C, but the VRM hit 100°C around the third minute, causing clock speeds to drop to 3.4GHz and power usage to fall to 65W. After lowering PL2 to 105W, clocks held steady at 4.3GHz with VRM temps reaching 95°C. Finally, setting PL2 to 101W caused VRM temps to rise to 92°C during the test. Is this typical? Or is the motherboard underperforming?
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wouterretuow
11-01-2022, 01:25 AM #1

I recently upgraded to a new setup with these details: CPU model i5 13500, motherboard Gigabyte B760m DS3H, DDR4 RAM 16x2, CPU cooler Deepcool Ak400. I increased power limits from 65 to 90W and 120W for the first two cores. During Cinebench R23 on a 10-minute test, my CPU stayed below 78°C, but the VRM hit 100°C around the third minute, causing clock speeds to drop to 3.4GHz and power usage to fall to 65W. After lowering PL2 to 105W, clocks held steady at 4.3GHz with VRM temps reaching 95°C. Finally, setting PL2 to 101W caused VRM temps to rise to 92°C during the test. Is this typical? Or is the motherboard underperforming?

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amberleenie
Member
174
11-01-2022, 10:11 PM
#2
Yes, this board features a very weak VRM. The fix is simply directing a fan to it, which improves airflow and resolves most issues with poorly designed VRMs. Additionally, VRM temperatures remain within safe limits up to 125°C—the maximum rating for its components—so reaching 100°C isn't a significant concern, provided the sensor is positioned in a hotspot area rather than at the edge.
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amberleenie
11-01-2022, 10:11 PM #2

Yes, this board features a very weak VRM. The fix is simply directing a fan to it, which improves airflow and resolves most issues with poorly designed VRMs. Additionally, VRM temperatures remain within safe limits up to 125°C—the maximum rating for its components—so reaching 100°C isn't a significant concern, provided the sensor is positioned in a hotspot area rather than at the edge.

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Pyroytic
Member
56
11-02-2022, 06:10 AM
#3
It's not uncommon for the CPU to temporarily slow down during testing. A temperature rise of 67°C suggests normal operation, but a sudden jump to 4GHz in just nine minutes could indicate a performance spike or thermal event. Monitor both speed and heat closely.
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Pyroytic
11-02-2022, 06:10 AM #3

It's not uncommon for the CPU to temporarily slow down during testing. A temperature rise of 67°C suggests normal operation, but a sudden jump to 4GHz in just nine minutes could indicate a performance spike or thermal event. Monitor both speed and heat closely.

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shanleighrose
Member
181
11-02-2022, 10:51 AM
#4
It relies on the board's configuration for the Tau cycle. Setting it up this way isn't unusual on budget systems.
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shanleighrose
11-02-2022, 10:51 AM #4

It relies on the board's configuration for the Tau cycle. Setting it up this way isn't unusual on budget systems.

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MegalyRetro
Junior Member
43
11-03-2022, 01:28 AM
#5
If a power part gets too hot like the VRM, it's just normal behavior—it's how it was made. As @RONOTHAN noted, the top choice is to ensure direct airflow reaches the VRM.
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MegalyRetro
11-03-2022, 01:28 AM #5

If a power part gets too hot like the VRM, it's just normal behavior—it's how it was made. As @RONOTHAN noted, the top choice is to ensure direct airflow reaches the VRM.

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Rodeen
Member
130
11-03-2022, 11:58 AM
#6
You can also try a 156watt CPU for up to 10 minutes maximum. The VRM temperature stays at around 86°C. I’m using thermal glue, a thermal pad, and a modified heatsink from another dead motherboard. I’m running the i7-12700, and I think my CPU won’t reach 156 watts during games anyway, but it gives me more confidence knowing the VRM MOSFETs are properly cooled.
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Rodeen
11-03-2022, 11:58 AM #6

You can also try a 156watt CPU for up to 10 minutes maximum. The VRM temperature stays at around 86°C. I’m using thermal glue, a thermal pad, and a modified heatsink from another dead motherboard. I’m running the i7-12700, and I think my CPU won’t reach 156 watts during games anyway, but it gives me more confidence knowing the VRM MOSFETs are properly cooled.