Overclock.net › Forums › AMD › AMD CPUs › FX-8120: slight voltage issue
New Posts  All Forums:Forum Nav:

FX-8120: slight voltage issue

post #1 of 5
Thread Starter 
Hey guys.
I have a slight voltage issue when overclocking my FX-8120. (see sig for other specs)

Stock voltage: 1.41v

The issue is, I need to change the vcore settings in the BIOS to 1.48v to achieve 4.2GHz.
What's more is, at stock settings, all voltage monitoring software shows around 1.32v when the chip is under load, and anywhere from 0.9 to 1.47v when it is idle. This is with all the power saving features on.

HOWEVER, if I set it at 1.48v, 4.2GHz in the BIOS, it idles around 1.38v and drops to 1.28v under load according to HW Monitor and CPUZ. All power saving features are off at this point.

See the image below.
What do you guys think about this? Is this normal?

Apollo
(16 items)
 
Project Greyscale
(24 items)
 
Zeus
(16 items)
 
CPUMotherboardGraphicsRAM
Intel Core i7-5930K Asus Sabertooth X99 ASUS GeForce GTX 1080 8GB ROG STRIX  Corsair Vengeance 32GB (4x8GB) DDR4 3000 
Hard DriveHard DriveOptical DriveCooling
Samsung 850 EVO 500GB Samsung 850 EVO 1TB Samsung SH-224BB CM Hyper 212 EVO 
OSMonitorKeyboardPower
Windows 8.1 x64 Pro Asus PB278Q (1440p) Gigabyte Aivia Osmium (Cherry Red) Corsair AX850 
CaseMouseMouse PadAudio
Cooler Master HAF X Gigabyte Aivia Krypton Razer Goliathus Extended Speed Edition Realtek ALC1150 8-Channel + Logitech z906 + Sam... 
CPUMotherboardGraphicsGraphics
i7-4790K EVGA Z97 Classified EVGA GTX 780Ti EVGA GTX 780Ti 
RAMHard DriveHard DriveHard Drive
Dominator Platinum Spinpoint F3 Spinpoint F3 510 Series 
Hard DriveHard DriveCoolingCooling
510 Series 320 Series XSPC AX120 XSPC AX360 
CoolingCoolingCoolingOS
XSPC AX240 EK Supremacy EK FC780 GTX Ti WIndows 8.1 
OSMonitorPowerCase
OS X 10.9.3 Yamaski Catleap 120Hz HCP-1200 Air 540 
MouseMouse PadAudioAudio
Razer Deathadder Table Avid Fast Track Duo HiFIMan HE-400 
CPUMotherboardGraphicsRAM
AMD FX-8120 @4.5GHz GIGABYTE GA-990FXA-UD7 GIGABYTE Radeon RX 460 G.SKILL Sniper 1600MHz 2x4GB 
Hard DriveHard DriveOptical DriveCooling
Crucial 64GB m4 1TB WD Black Samsung SH-224BB CM Hyper 212+ 
OSMonitorKeyboardPower
Windows 8.1 x64 Pro Asus PB278Q (1440p) Gigabyte Aivia Osmium Corsair AX850 
CaseMouseMouse PadAudio
CM 690II Gigabyte Aivia Krypton Razer Goliathus Extended Speed Edition Realtek ALC889 + Logitech z906 + Samson SR850 
  hide details  
Reply
Apollo
(16 items)
 
Project Greyscale
(24 items)
 
Zeus
(16 items)
 
CPUMotherboardGraphicsRAM
Intel Core i7-5930K Asus Sabertooth X99 ASUS GeForce GTX 1080 8GB ROG STRIX  Corsair Vengeance 32GB (4x8GB) DDR4 3000 
Hard DriveHard DriveOptical DriveCooling
Samsung 850 EVO 500GB Samsung 850 EVO 1TB Samsung SH-224BB CM Hyper 212 EVO 
OSMonitorKeyboardPower
Windows 8.1 x64 Pro Asus PB278Q (1440p) Gigabyte Aivia Osmium (Cherry Red) Corsair AX850 
CaseMouseMouse PadAudio
Cooler Master HAF X Gigabyte Aivia Krypton Razer Goliathus Extended Speed Edition Realtek ALC1150 8-Channel + Logitech z906 + Sam... 
CPUMotherboardGraphicsGraphics
i7-4790K EVGA Z97 Classified EVGA GTX 780Ti EVGA GTX 780Ti 
RAMHard DriveHard DriveHard Drive
Dominator Platinum Spinpoint F3 Spinpoint F3 510 Series 
Hard DriveHard DriveCoolingCooling
510 Series 320 Series XSPC AX120 XSPC AX360 
CoolingCoolingCoolingOS
XSPC AX240 EK Supremacy EK FC780 GTX Ti WIndows 8.1 
OSMonitorPowerCase
OS X 10.9.3 Yamaski Catleap 120Hz HCP-1200 Air 540 
MouseMouse PadAudioAudio
Razer Deathadder Table Avid Fast Track Duo HiFIMan HE-400 
CPUMotherboardGraphicsRAM
AMD FX-8120 @4.5GHz GIGABYTE GA-990FXA-UD7 GIGABYTE Radeon RX 460 G.SKILL Sniper 1600MHz 2x4GB 
Hard DriveHard DriveOptical DriveCooling
Crucial 64GB m4 1TB WD Black Samsung SH-224BB CM Hyper 212+ 
OSMonitorKeyboardPower
Windows 8.1 x64 Pro Asus PB278Q (1440p) Gigabyte Aivia Osmium Corsair AX850 
CaseMouseMouse PadAudio
CM 690II Gigabyte Aivia Krypton Razer Goliathus Extended Speed Edition Realtek ALC889 + Logitech z906 + Samson SR850 
  hide details  
Reply
post #2 of 5
Turn on LLC.
HTPC
(11 items)
 
  
CPUMotherboardRAMHard Drive
AMD A-3870K AsRock A75 Pro (FM1) HyperX DDR3 1866 8 GB SAMSUNG 830 256gb 
Hard DriveOptical DriveCoolingOS
SAMSUNG EcoGreen F4 2TB Plextor Black Blu-ray Burner Phenom II X4 stock Cooler Windows 10 
MonitorPowerCase
LG M2762D-PM Glossy Black 27" 5ms (1920x1080) Antec HG 900 Gerenic ATX Case 
  hide details  
Reply
HTPC
(11 items)
 
  
CPUMotherboardRAMHard Drive
AMD A-3870K AsRock A75 Pro (FM1) HyperX DDR3 1866 8 GB SAMSUNG 830 256gb 
Hard DriveOptical DriveCoolingOS
SAMSUNG EcoGreen F4 2TB Plextor Black Blu-ray Burner Phenom II X4 stock Cooler Windows 10 
MonitorPowerCase
LG M2762D-PM Glossy Black 27" 5ms (1920x1080) Antec HG 900 Gerenic ATX Case 
  hide details  
Reply
post #3 of 5
Thread Starter 
Quote:
Originally Posted by dixson01974 View Post

Turn on LLC.

This board does not have that.
Apollo
(16 items)
 
Project Greyscale
(24 items)
 
Zeus
(16 items)
 
CPUMotherboardGraphicsRAM
Intel Core i7-5930K Asus Sabertooth X99 ASUS GeForce GTX 1080 8GB ROG STRIX  Corsair Vengeance 32GB (4x8GB) DDR4 3000 
Hard DriveHard DriveOptical DriveCooling
Samsung 850 EVO 500GB Samsung 850 EVO 1TB Samsung SH-224BB CM Hyper 212 EVO 
OSMonitorKeyboardPower
Windows 8.1 x64 Pro Asus PB278Q (1440p) Gigabyte Aivia Osmium (Cherry Red) Corsair AX850 
CaseMouseMouse PadAudio
Cooler Master HAF X Gigabyte Aivia Krypton Razer Goliathus Extended Speed Edition Realtek ALC1150 8-Channel + Logitech z906 + Sam... 
CPUMotherboardGraphicsGraphics
i7-4790K EVGA Z97 Classified EVGA GTX 780Ti EVGA GTX 780Ti 
RAMHard DriveHard DriveHard Drive
Dominator Platinum Spinpoint F3 Spinpoint F3 510 Series 
Hard DriveHard DriveCoolingCooling
510 Series 320 Series XSPC AX120 XSPC AX360 
CoolingCoolingCoolingOS
XSPC AX240 EK Supremacy EK FC780 GTX Ti WIndows 8.1 
OSMonitorPowerCase
OS X 10.9.3 Yamaski Catleap 120Hz HCP-1200 Air 540 
MouseMouse PadAudioAudio
Razer Deathadder Table Avid Fast Track Duo HiFIMan HE-400 
CPUMotherboardGraphicsRAM
AMD FX-8120 @4.5GHz GIGABYTE GA-990FXA-UD7 GIGABYTE Radeon RX 460 G.SKILL Sniper 1600MHz 2x4GB 
Hard DriveHard DriveOptical DriveCooling
Crucial 64GB m4 1TB WD Black Samsung SH-224BB CM Hyper 212+ 
OSMonitorKeyboardPower
Windows 8.1 x64 Pro Asus PB278Q (1440p) Gigabyte Aivia Osmium Corsair AX850 
CaseMouseMouse PadAudio
CM 690II Gigabyte Aivia Krypton Razer Goliathus Extended Speed Edition Realtek ALC889 + Logitech z906 + Samson SR850 
  hide details  
Reply
Apollo
(16 items)
 
Project Greyscale
(24 items)
 
Zeus
(16 items)
 
CPUMotherboardGraphicsRAM
Intel Core i7-5930K Asus Sabertooth X99 ASUS GeForce GTX 1080 8GB ROG STRIX  Corsair Vengeance 32GB (4x8GB) DDR4 3000 
Hard DriveHard DriveOptical DriveCooling
Samsung 850 EVO 500GB Samsung 850 EVO 1TB Samsung SH-224BB CM Hyper 212 EVO 
OSMonitorKeyboardPower
Windows 8.1 x64 Pro Asus PB278Q (1440p) Gigabyte Aivia Osmium (Cherry Red) Corsair AX850 
CaseMouseMouse PadAudio
Cooler Master HAF X Gigabyte Aivia Krypton Razer Goliathus Extended Speed Edition Realtek ALC1150 8-Channel + Logitech z906 + Sam... 
CPUMotherboardGraphicsGraphics
i7-4790K EVGA Z97 Classified EVGA GTX 780Ti EVGA GTX 780Ti 
RAMHard DriveHard DriveHard Drive
Dominator Platinum Spinpoint F3 Spinpoint F3 510 Series 
Hard DriveHard DriveCoolingCooling
510 Series 320 Series XSPC AX120 XSPC AX360 
CoolingCoolingCoolingOS
XSPC AX240 EK Supremacy EK FC780 GTX Ti WIndows 8.1 
OSMonitorPowerCase
OS X 10.9.3 Yamaski Catleap 120Hz HCP-1200 Air 540 
MouseMouse PadAudioAudio
Razer Deathadder Table Avid Fast Track Duo HiFIMan HE-400 
CPUMotherboardGraphicsRAM
AMD FX-8120 @4.5GHz GIGABYTE GA-990FXA-UD7 GIGABYTE Radeon RX 460 G.SKILL Sniper 1600MHz 2x4GB 
Hard DriveHard DriveOptical DriveCooling
Crucial 64GB m4 1TB WD Black Samsung SH-224BB CM Hyper 212+ 
OSMonitorKeyboardPower
Windows 8.1 x64 Pro Asus PB278Q (1440p) Gigabyte Aivia Osmium Corsair AX850 
CaseMouseMouse PadAudio
CM 690II Gigabyte Aivia Krypton Razer Goliathus Extended Speed Edition Realtek ALC889 + Logitech z906 + Samson SR850 
  hide details  
Reply
post #4 of 5
hello,
have you definitely got apm turned off please?, as it will play with your voltages.
yep, I have just got some new fans for my h100 and its not going well, I might just keep the 4ghz with the 1.284v.
i'll keep trying to hit the 4.2 or above, but I too cant seem to reach that, might be the cpu, mobo and psu I have.

i'm just trying out 4.2 with 1.37v, so its a big jump from 1.28v and 1.5v or above you would need would probably torch your mobo.
Edited by MrPerforations - 2/11/13 at 7:10am
    
CPUCPUMotherboardGraphics
AMD™ Ryzen™ 1700 3.75ghz Cool Laboratory™ Liquid Copper MSI™ X370 Gaming Pro Carbon™ Gigabyte™ Radeon™ R9 280 950/1070 Crossfire 
GraphicsRAMRAMHard Drive
Gigabyte™ Radeon™ R9 280 950/1070 Crossfire Avexir™ Blitz™ 3200 CL16 @ 3200 Crucial Ballistix™ Active Cooling fan Seagate™ 2TB Barracuda™ 
Optical DriveCoolingCoolingOS
ASUS™ DRW-24D5MT XSPC™ Raystorm™ 750 2x EX360 Radiators 5x Coo... Triple QX De-ionised Water and WCUK™ KIll Coil Windows™ 10 x64 
MonitorKeyboardPowerCase
Acer™ V243HL 24" Element™ Thorium™ 200 EVGA™ Supernova™ 1000 G2 Coolermaster™ Cosmos Pure Black  
MouseMouse PadAudioAudio
Corsair™ M45  World of Tanks™ giant 6mm Creative labs™ sb x-fi titanium  Logitech™ 540x 5.1 
  hide details  
Reply
    
CPUCPUMotherboardGraphics
AMD™ Ryzen™ 1700 3.75ghz Cool Laboratory™ Liquid Copper MSI™ X370 Gaming Pro Carbon™ Gigabyte™ Radeon™ R9 280 950/1070 Crossfire 
GraphicsRAMRAMHard Drive
Gigabyte™ Radeon™ R9 280 950/1070 Crossfire Avexir™ Blitz™ 3200 CL16 @ 3200 Crucial Ballistix™ Active Cooling fan Seagate™ 2TB Barracuda™ 
Optical DriveCoolingCoolingOS
ASUS™ DRW-24D5MT XSPC™ Raystorm™ 750 2x EX360 Radiators 5x Coo... Triple QX De-ionised Water and WCUK™ KIll Coil Windows™ 10 x64 
MonitorKeyboardPowerCase
Acer™ V243HL 24" Element™ Thorium™ 200 EVGA™ Supernova™ 1000 G2 Coolermaster™ Cosmos Pure Black  
MouseMouse PadAudioAudio
Corsair™ M45  World of Tanks™ giant 6mm Creative labs™ sb x-fi titanium  Logitech™ 540x 5.1 
  hide details  
Reply
post #5 of 5
Thread Starter 
Quote:
Originally Posted by MrPerforations View Post

hello,
have you definitely got apm turned off please?, as it will play with your voltages.
yep, I have just got some new fans for my h100 and its not going well, I might just keep the 4ghz with the 1.284v.
i'll keep trying to hit the 4.2 or above, but I too cant seem to reach that, might be the cpu, mobo and psu I have.

i'm just trying out 4.2 with 1.37v, so its a big jump from 1.28v and 1.5v or above you would need would probably torch your mobo.

Yup. APM is turned off. 3.9GHz is the highest I can go on stock volts. Scratch what I said in the OP about needing 1.48v for 4200MHz, I actually need to set it at 1.51v in the BIOS.

The funny thing is, according to all the voltage monitoring software I'm using, the voltage is actually the same as the stock volts, both idle and stressed. In fact, it NEVER crosses 1.42v. I'm confused.
Apollo
(16 items)
 
Project Greyscale
(24 items)
 
Zeus
(16 items)
 
CPUMotherboardGraphicsRAM
Intel Core i7-5930K Asus Sabertooth X99 ASUS GeForce GTX 1080 8GB ROG STRIX  Corsair Vengeance 32GB (4x8GB) DDR4 3000 
Hard DriveHard DriveOptical DriveCooling
Samsung 850 EVO 500GB Samsung 850 EVO 1TB Samsung SH-224BB CM Hyper 212 EVO 
OSMonitorKeyboardPower
Windows 8.1 x64 Pro Asus PB278Q (1440p) Gigabyte Aivia Osmium (Cherry Red) Corsair AX850 
CaseMouseMouse PadAudio
Cooler Master HAF X Gigabyte Aivia Krypton Razer Goliathus Extended Speed Edition Realtek ALC1150 8-Channel + Logitech z906 + Sam... 
CPUMotherboardGraphicsGraphics
i7-4790K EVGA Z97 Classified EVGA GTX 780Ti EVGA GTX 780Ti 
RAMHard DriveHard DriveHard Drive
Dominator Platinum Spinpoint F3 Spinpoint F3 510 Series 
Hard DriveHard DriveCoolingCooling
510 Series 320 Series XSPC AX120 XSPC AX360 
CoolingCoolingCoolingOS
XSPC AX240 EK Supremacy EK FC780 GTX Ti WIndows 8.1 
OSMonitorPowerCase
OS X 10.9.3 Yamaski Catleap 120Hz HCP-1200 Air 540 
MouseMouse PadAudioAudio
Razer Deathadder Table Avid Fast Track Duo HiFIMan HE-400 
CPUMotherboardGraphicsRAM
AMD FX-8120 @4.5GHz GIGABYTE GA-990FXA-UD7 GIGABYTE Radeon RX 460 G.SKILL Sniper 1600MHz 2x4GB 
Hard DriveHard DriveOptical DriveCooling
Crucial 64GB m4 1TB WD Black Samsung SH-224BB CM Hyper 212+ 
OSMonitorKeyboardPower
Windows 8.1 x64 Pro Asus PB278Q (1440p) Gigabyte Aivia Osmium Corsair AX850 
CaseMouseMouse PadAudio
CM 690II Gigabyte Aivia Krypton Razer Goliathus Extended Speed Edition Realtek ALC889 + Logitech z906 + Samson SR850 
  hide details  
Reply
Apollo
(16 items)
 
Project Greyscale
(24 items)
 
Zeus
(16 items)
 
CPUMotherboardGraphicsRAM
Intel Core i7-5930K Asus Sabertooth X99 ASUS GeForce GTX 1080 8GB ROG STRIX  Corsair Vengeance 32GB (4x8GB) DDR4 3000 
Hard DriveHard DriveOptical DriveCooling
Samsung 850 EVO 500GB Samsung 850 EVO 1TB Samsung SH-224BB CM Hyper 212 EVO 
OSMonitorKeyboardPower
Windows 8.1 x64 Pro Asus PB278Q (1440p) Gigabyte Aivia Osmium (Cherry Red) Corsair AX850 
CaseMouseMouse PadAudio
Cooler Master HAF X Gigabyte Aivia Krypton Razer Goliathus Extended Speed Edition Realtek ALC1150 8-Channel + Logitech z906 + Sam... 
CPUMotherboardGraphicsGraphics
i7-4790K EVGA Z97 Classified EVGA GTX 780Ti EVGA GTX 780Ti 
RAMHard DriveHard DriveHard Drive
Dominator Platinum Spinpoint F3 Spinpoint F3 510 Series 
Hard DriveHard DriveCoolingCooling
510 Series 320 Series XSPC AX120 XSPC AX360 
CoolingCoolingCoolingOS
XSPC AX240 EK Supremacy EK FC780 GTX Ti WIndows 8.1 
OSMonitorPowerCase
OS X 10.9.3 Yamaski Catleap 120Hz HCP-1200 Air 540 
MouseMouse PadAudioAudio
Razer Deathadder Table Avid Fast Track Duo HiFIMan HE-400 
CPUMotherboardGraphicsRAM
AMD FX-8120 @4.5GHz GIGABYTE GA-990FXA-UD7 GIGABYTE Radeon RX 460 G.SKILL Sniper 1600MHz 2x4GB 
Hard DriveHard DriveOptical DriveCooling
Crucial 64GB m4 1TB WD Black Samsung SH-224BB CM Hyper 212+ 
OSMonitorKeyboardPower
Windows 8.1 x64 Pro Asus PB278Q (1440p) Gigabyte Aivia Osmium Corsair AX850 
CaseMouseMouse PadAudio
CM 690II Gigabyte Aivia Krypton Razer Goliathus Extended Speed Edition Realtek ALC889 + Logitech z906 + Samson SR850 
  hide details  
Reply
New Posts  All Forums:Forum Nav:
  Return Home
  Back to Forum: AMD CPUs
Overclock.net › Forums › AMD › AMD CPUs › FX-8120: slight voltage issue