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FX8120 overclock: How are these voltages?

post #1 of 16
Thread Starter 
Hey guys.
Overclocking my FX8120 here.
I'm curious about these voltages.
On the BIOS it's set at 1.48v, but it never crosses 1.42v according to HWMonitor and drops to 1.28v under load.

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post #2 of 16
Looks good to me. You could probably get it higher! thumb.gif

The reason it shows lower voltages in windows is probably because of Vdroop, i dont know why it lowers even more under load though. Crank up the LLC if you want to compensate for Vdroop.
 
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post #3 of 16
Edit: Double post.
 
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post #4 of 16
those look pretty good.
have you tried for 4.5ghz +?

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post #5 of 16
Thread Starter 
Quote:
Originally Posted by Rangerjr1 View Post

Looks good to me. You could probably get it higher! thumb.gif

The reason it shows lower voltages in windows is probably because of Vdroop, i dont know why it lowers even more under load though. Crank up the LLC if you want to compensate for Vdroop.

Quote:
Originally Posted by l0max View Post

those look pretty good.
have you tried for 4.5ghz +?




I ended up having to up it a notch, but it's stable now at 4.1GHz. The idle voltage didn't change, but the voltage under load went to 1.31v.

It seems the vdroop in your UD3 isn't as terrible as my UD7. It's currently set at 1.51v in the BIOS, idles at 1.42v and drops to 1.31v under load. -.-

I'm going to try for higher clocks with these voltages later, I'll report back. Also, this revision of the UD7 doesn't have LLC. :\
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post #6 of 16
Quote:
I'll report back. Also, this revision of the UD7 doesn't have LLC. :\

Then your only solution is to increase Bios voltage to compensate for Vdroop. But be careful.
 
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post #7 of 16
Thread Starter 
4.2GHz 6hrs prime stable on the same volts! Yesh!

Time to try 4.3GHz.
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post #8 of 16
Quote:
Originally Posted by vinton13 View Post

4.2GHz 6hrs prime stable on the same volts! Yesh!

Time to try 4.3GHz.

Dont use Prime95, it hates FX cpus. it will make most FX CPUS crash at stock. use OCCT or LinX.
 
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post #9 of 16
Quote:
Originally Posted by vinton13 View Post

4.2GHz 6hrs prime stable on the same volts! Yesh!

Time to try 4.3GHz.

Dont use Prime95, it hates FX cpus. it will make most FX CPUS crash at stock. use OCCT or LinX.
 
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post #10 of 16
Thread Starter 
Quote:
Originally Posted by Rangerjr1 View Post

Dont use Prime95, it hates FX cpus. it will make most FX CPUS crash at stock. use OCCT or LinX.

Ran 75 tests at 4.3GHz with LinX. Stable, same volts. Trying 4.4GHz now.
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Dominator Platinum Spinpoint F3 Spinpoint F3 510 Series 
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510 Series 320 Series XSPC AX120 XSPC AX360 
CoolingCoolingCoolingOS
XSPC AX240 EK Supremacy EK FC780 GTX Ti WIndows 8.1 
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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 
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Apollo
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Zeus
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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 
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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 
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Overclock.net › Forums › AMD › AMD CPUs › FX8120 overclock: How are these voltages?