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Hit a wall, can't reach 4ghz [Phenom 955]

post #1 of 46
Thread Starter 
See sig rig for current overclock (Stable)

I have tried a million different combinations to reach 4ghz, all to no avail. I bluescreen constantly but i have no real way of knowing what is causing it.

NB: I can't go over 1.470 vCore because of high temperatures.

Please can anyone offer information as to why i am getting bluescreens. Also can somebody explain the effects of HT link Multiplier and NB (IMC) Multiplier

I am losing patience ;_;
Nihilus
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Nihilus
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post #2 of 46
You're most likely getting blue screens due to a lack of voltage. It gets exponentially harder to hit higher clock speeds as your approach the upper limits of your CPU's capabilities. You might really have to crank up the voltage if you want to reach the 4GHz barrier. If you aren't willing to because of heat, then it isn't too terrible to have 3.9GHz.

How long did you do a stress test at your current setup?
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post #3 of 46
I have to say that its your Cooling thats holding you back, I notice that these Phenom II's overclock so much better with good cooling. The colder the CPU is the less voltage it actually takes to overclock them_

Example, I could do 3.8ghz on air with 1.4volts as my Max
But with this Corsair H70 I can do 4.0ghz with 1.4volts as my Max

Its your cooling thats holding you back, Some people can do 4.0ghz on air but thats with the big ole expensive air coolers like the ever so popular DH-14
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My System
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post #4 of 46
Thread Starter 
Hmm. I may have to look into getting an H70 when i get my new case and PSU. I'm pretty sure i can hold 3.9 on 1.39 vCore but i can't remember. I'll retest
Nihilus
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Nihilus
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WD Caviar Green - 1TB Plextor M3 - 128GB Custom Water Windows 7 Professonal - x64 
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post #5 of 46
Thread Starter 
Well that wasn't very helpful..
Nihilus
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Nihilus
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i7 3820 - 4.5GHz Rampage IV Formula EVGA GTX680 - 1.25GHz Samsung Green - 2000MHz/CL10/4x4GB 
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WD Caviar Green - 1TB Plextor M3 - 128GB Custom Water Windows 7 Professonal - x64 
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post #6 of 46
Are you ocing by the multipiler or FSB?
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post #7 of 46
Thread Starter 
I'm using both. I have tried combinations of the two as well. For example i have tried 250*16 and 236*17
Nihilus
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i7 3820 - 4.5GHz Rampage IV Formula EVGA GTX680 - 1.25GHz Samsung Green - 2000MHz/CL10/4x4GB 
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Nihilus
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i7 3820 - 4.5GHz Rampage IV Formula EVGA GTX680 - 1.25GHz Samsung Green - 2000MHz/CL10/4x4GB 
Hard DriveHard DriveCoolingOS
WD Caviar Green - 1TB Plextor M3 - 128GB Custom Water Windows 7 Professonal - x64 
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post #8 of 46
Keep your HT link below 2000mhz (I seem to notice more BSOD's when I pass 2100mhz & the higher the HT link goes the more it'll hinder performance so keep it low)
2000mhz is the sweet spot (even 1800 won't affect nothing at all)

NB Frequency has to be around 2600-2800mhz to help stablize the overclock more_ Its strange but I found out that with a higher NB Frequency I was able to acquire a much better stable overclock than with 2000mhz NB Frequency, *& the plus side is that raising the NB Frequency increases performance tremendously_

Most people can do NB Frequency of 2600-2800 with 1.25-1.35volts

I/E I can do 2800 with just 1.256volts CPU/NB Voltage

I know thats not much information, but I hope it helps
My System
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My System
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i72600K Sandybridge @ 4.8ghz MSi P67A-GD65 Galaxy GTX 580 @930mhz GSkill CL7 2x4gb 1333 @ 1866 9-10-9-24-1T 
Hard DriveOptical DriveOSMonitor
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post #9 of 46
What revision is your 955BE?
Some of them just wont do 4.0Ghz
Moar cores!
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Moar cores!
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post #10 of 46
Thread Starter 
Quote:
Originally Posted by Heavy MG View Post
What revision is your 955BE?
Some of them just wont do 4.0Ghz
Its C3. That's bull**** because in the 9x5 club there are plenty of people with the same chip that have achieved 4ghz
Nihilus
(14 items)
 
  
CPUMotherboardGraphicsRAM
i7 3820 - 4.5GHz Rampage IV Formula EVGA GTX680 - 1.25GHz Samsung Green - 2000MHz/CL10/4x4GB 
Hard DriveHard DriveCoolingOS
WD Caviar Green - 1TB Plextor M3 - 128GB Custom Water Windows 7 Professonal - x64 
MonitorKeyboardPowerCase
Dell U2312HM Ducky G2 Pro Seasonic 660XP - 660W Define R4 - Pearl Black 
MouseMouse Pad
Kone Pure Goliathus Control 
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Nihilus
(14 items)
 
  
CPUMotherboardGraphicsRAM
i7 3820 - 4.5GHz Rampage IV Formula EVGA GTX680 - 1.25GHz Samsung Green - 2000MHz/CL10/4x4GB 
Hard DriveHard DriveCoolingOS
WD Caviar Green - 1TB Plextor M3 - 128GB Custom Water Windows 7 Professonal - x64 
MonitorKeyboardPowerCase
Dell U2312HM Ducky G2 Pro Seasonic 660XP - 660W Define R4 - Pearl Black 
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Kone Pure Goliathus Control 
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Reply
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