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

Motherboard automatically drops voltage when running stress test ?

Joined
May 29, 2017
Messages
283 (0.11/day)
Location
Latvia
Processor AMD Ryzen™ 7 5700X
Motherboard ASRock B450M Pro4-F R2.0
Cooling Arctic Freezer A35
Memory Lexar Thor 32GB 3733Mhz CL16
Video Card(s) PURE AMD Radeon™ RX 7800 XT 16GB
Storage Lexar NM790 2TB + Lexar NS100 2TB
Display(s) HP X34 UltraWide IPS 165Hz
Case XPG Starker AIR
Audio Device(s) Airpulse SM200 + Volt 1 + Rode NT1 SS
Power Supply Cougar GEX 750
Mouse Cooler Master MM730
Keyboard Krux Atax PRO Gateron Yellow
Software Windows 10 Pro
Hi!

I had a small problem my gigabyte motherboard by default drops my CPU voltage when i'm running intel burn test. For example in bios i manually set my CPU core voltage to 1.35V but when i'm running stress test on desktop my CPU core voltage drops to 1.21V way is that ? Temps are ok.

Which feature in bios i had to change to resolve this issue ?
 

eidairaman1

The Exiled Airman
Joined
Jul 2, 2007
Messages
40,435 (6.58/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
Hi!

I had a small problem my gigabyte motherboard by default drops my CPU voltage when i'm running intel burn test. For example in bios i manually set my CPU core voltage to 1.35V but when i'm running stress test on desktop my CPU core voltage drops to 1.21V way is that ? Temps are ok.

Which feature in bios i had to change to resolve this issue ?

Is it becoming unstable?

Please Fill out your System Specs Page in your profile to include your cpu cooler too.
 
Joined
May 29, 2017
Messages
283 (0.11/day)
Location
Latvia
Processor AMD Ryzen™ 7 5700X
Motherboard ASRock B450M Pro4-F R2.0
Cooling Arctic Freezer A35
Memory Lexar Thor 32GB 3733Mhz CL16
Video Card(s) PURE AMD Radeon™ RX 7800 XT 16GB
Storage Lexar NM790 2TB + Lexar NS100 2TB
Display(s) HP X34 UltraWide IPS 165Hz
Case XPG Starker AIR
Audio Device(s) Airpulse SM200 + Volt 1 + Rode NT1 SS
Power Supply Cougar GEX 750
Mouse Cooler Master MM730
Keyboard Krux Atax PRO Gateron Yellow
Software Windows 10 Pro

Solaris17

Super Dainty Moderator
Staff member
Joined
Aug 16, 2005
Messages
25,879 (3.79/day)
Location
Alabama
System Name Rocinante
Processor I9 14900KS
Motherboard EVGA z690 Dark KINGPIN (modded BIOS)
Cooling EK-AIO Elite 360 D-RGB
Memory 64GB Gskill Trident Z5 DDR5 6000 @6400
Video Card(s) MSI SUPRIM Liquid X 4090
Storage 1x 500GB 980 Pro | 1x 1TB 980 Pro | 1x 8TB Corsair MP400
Display(s) Odyssey OLED G9 G95SC
Case Lian Li o11 Evo Dynamic White
Audio Device(s) Moondrop S8's on Schiit Hel 2e
Power Supply Bequiet! Power Pro 12 1500w
Mouse Lamzu Atlantis mini (White)
Keyboard Monsgeek M3 Lavender, Akko Crystal Blues
VR HMD Quest 3
Software Windows 11
Benchmark Scores I dont have time for that.
Hi!

I had a small problem my gigabyte motherboard by default drops my CPU voltage when i'm running intel burn test. For example in bios i manually set my CPU core voltage to 1.35V but when i'm running stress test on desktop my CPU core voltage drops to 1.21V way is that ? Temps are ok.

Which feature in bios i had to change to resolve this issue ?

First while current technology makes them pretty close you shouldn’t rely on software sensors. If your not crashing I would leave it at that.

Second this isn’t actually mysterious and almost all electronic devices do it. The option you are looking for in bios is called (most likely) vdroop and will help stabilize the drop.
 

FireFox

The Power Of Intel
Joined
Feb 19, 2014
Messages
7,507 (2.02/day)
Location
Germany
Processor Intel i7 10700K
Motherboard Asus ROG Maximus XII Hero
Cooling 2x Black Ice Nemesis GTX 480 - 1x Black Ice Nemesis GTX 420 - D5 VPP655P - 13x Corsair LL120 - LL140
Memory 32GB G.SKILL Trident Z RGB 3600Hz
Video Card(s) EVGA GEFORCE RTX 3080 XC3 Ultra
Storage Samsung 970 EVO PLUS 500GB/1TB - WD Blue SN550 1TB - 2 X WD Blue 1TB - 3 X WD Black 1TB
Display(s) Asus ROG PG278QR 2560x1440 144Hz (Overclocked 165Hz )/ Samsung
Case Corsair Obsidian 1000D
Audio Device(s) I prefer Gaming-Headset
Power Supply Enermax MaxTytan 1250W 80+ Titanium
Mouse Logitech G502 spectrum
Keyboard Virtuis Advanced Gaming Keyboard ( Batboard )
Software Windows 10 Enterprise/Windows 10 Pro/Windows 11 Pro
Benchmark Scores My PC runs FiFA
by default drops my CPU voltage when i'm running intel burn test. For example in bios i manually set my CPU core voltage to 1.35V but when i'm running stress test on desktop my CPU core voltage drops to 1.21V

Try

1 - updating Bios if motherboard is new
2 - check for any power saver in bios if enabled or disabled
3 - reseting the bios
4 - Load line calibration ( vdroop )
 

eidairaman1

The Exiled Airman
Joined
Jul 2, 2007
Messages
40,435 (6.58/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
First while current technology makes them pretty close you shouldn’t rely on software sensors. If your not crashing I would leave it at that.

Second this isn’t actually mysterious and almost all electronic devices do it. The option you are looking for in bios is called (most likely) vdroop and will help stabilize the drop.
Try

1 - updating Bios if motherboard is new
2 - check for any power saver in bios if enabled or disabled
3 - reseting the bios
4 - Load line calibration ( vdroop )

Do as what these 2 have said to do. As what @Solaris17 and I said, if it is not bsoding or freezing you are ok. Electronic are not perfect and at times it will pull less or more power within ATX 2.2-2.32 tolerance specifications.

On my rig the board boosts power on its own to 1.524 from 1.476 under Max Load.
 

FireFox

The Power Of Intel
Joined
Feb 19, 2014
Messages
7,507 (2.02/day)
Location
Germany
Processor Intel i7 10700K
Motherboard Asus ROG Maximus XII Hero
Cooling 2x Black Ice Nemesis GTX 480 - 1x Black Ice Nemesis GTX 420 - D5 VPP655P - 13x Corsair LL120 - LL140
Memory 32GB G.SKILL Trident Z RGB 3600Hz
Video Card(s) EVGA GEFORCE RTX 3080 XC3 Ultra
Storage Samsung 970 EVO PLUS 500GB/1TB - WD Blue SN550 1TB - 2 X WD Blue 1TB - 3 X WD Black 1TB
Display(s) Asus ROG PG278QR 2560x1440 144Hz (Overclocked 165Hz )/ Samsung
Case Corsair Obsidian 1000D
Audio Device(s) I prefer Gaming-Headset
Power Supply Enermax MaxTytan 1250W 80+ Titanium
Mouse Logitech G502 spectrum
Keyboard Virtuis Advanced Gaming Keyboard ( Batboard )
Software Windows 10 Enterprise/Windows 10 Pro/Windows 11 Pro
Benchmark Scores My PC runs FiFA
On my rig the board boosts power on its own to 1.524 from 1.476 under Max Load.

From 1.476 to 1.524 that's ok but a big drop from 1.35V to 1.21V and the system it's stable for me that means that the CPU doesn't need all that voltage and at this point i would decrease it and run the CPU at 1.22V with maybe a boost under max load to 1.248V./1.26V
 
Top