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x79 Rampage IV Extreme Question, can a CPU PLL Voltage too low damage my 3930k?

post #1 of 7
Thread Starter 
My title says it all.

These days, I'm messing a lot with my 3930k and trying to achive many clocks.

I'm actually working on one ( max temps is 65'C)

4684 Mhz
120.125 Mhz FSB
1.25 Strap
Ratio 39x
Ram Freq : 2242 Mhz 10-11-11-28

Vcore 1.36v
DRAM ABCD 1.5v
VCCSA: 1.17 (LLC Enabled )
PLL 1.475v
VTT : 1.25v
2nd vtt 1.05099


My Question, is it bad to have a very low PLL?

I remember with my old R3E, I was using 1.55 v PLL and my 4.3 Ghz OC was very stable with only 1.33125vcore, I don't know if I can do the same with SB-e???

Thank you
Edited by KaRLiToS - 3/20/12 at 5:52pm
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Intel i7 4930k @ 4.6Ghz Asus Rampage IV Extreme (Koolance Full WB) 2 x GTX 1080ti FE in SLI (EK WATERBLOCK) Corsair Dominator GT 2133 MHz (16GB) 
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CPUMotherboardGraphicsRAM
Intel i7 4930k @ 4.6Ghz Asus Rampage IV Extreme (Koolance Full WB) 2 x GTX 1080ti FE in SLI (EK WATERBLOCK) Corsair Dominator GT 2133 MHz (16GB) 
Hard DriveHard DriveHard DriveHard Drive
3 TB Seagate OCZ Vertex 4 256GB Crucial M4 128GB ADATA SX900 128GB 
CoolingCoolingCoolingCooling
RIVE Koolance Waterblock (VRM and PCH) Feser X-Changer 360 Feser X-Changer 240 Feser X-Changer 480 
CoolingCoolingCoolingOS
WaterCool MoRA3 Pro with Gentle Typhoon 3 x MCP 655 pumps (With EK top...all serial) 2 x EK FC 1080ti Blocks Windows 7 Ultimate x64 
MonitorMonitorKeyboardPower
Asus ROG Swift PG348Q (3440x1440 @100hz) CrossOver 27Q Led-P Logitech G15 EVGA SuperNova 1600T2 (Titanium) 
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Corsair Obsidian Heavily Modded Logitech G700 RocketFish Speed/Control M-audio AV-40 (Logitech G-35) 
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post #2 of 7
Lowering CPU pll voltage won't damage your CPU, it might make it unstable though.
post #3 of 7
That PLL you have there, 1.475v, is fine imo.

I've ran 1.2v on my 990x 24/7 without issue. The key is to find the sweet spot with the PLL to find your perfect OC.
    
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CPUMotherboardGraphicsRAM
8700k Apex X TITAN X (Pascal)  Trident Z 4400MHz 
Hard DriveCoolingCoolingOS
750 NVMe 1.2TB EK HF/rx360/rx120 EK FC/GTs/mcp655 Windows 10 Pro  
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post #4 of 7
CPU PLL by default is 1.8 volts if I remember correctly. Most top overclocks (5G+) on SB-E usually leave it at 1.8V or lower it to 1.74 V. 1.475 volts seems too low.

Having it too low shouldn't damage your CPU, it'll just make it a bit more unstable.
post #5 of 7
Thread Starter 
Thank you all for your help. I was just trying to lower my Vcore ,

I'm at 4683 Mhz
using the 125 strap
with 120.125 mhz BCLK
and 2242 Mhz RAM

And I can't go under
1.385vcore
1.25 VTT
1.17 VCSSA

Is it normal? Temps don't go above 67'C under IBT so temps are no issue until 5Ghz 5.1Ghz
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(24 items)
 
  
CPUMotherboardGraphicsRAM
Intel i7 4930k @ 4.6Ghz Asus Rampage IV Extreme (Koolance Full WB) 2 x GTX 1080ti FE in SLI (EK WATERBLOCK) Corsair Dominator GT 2133 MHz (16GB) 
Hard DriveHard DriveHard DriveHard Drive
3 TB Seagate OCZ Vertex 4 256GB Crucial M4 128GB ADATA SX900 128GB 
CoolingCoolingCoolingCooling
RIVE Koolance Waterblock (VRM and PCH) Feser X-Changer 360 Feser X-Changer 240 Feser X-Changer 480 
CoolingCoolingCoolingOS
WaterCool MoRA3 Pro with Gentle Typhoon 3 x MCP 655 pumps (With EK top...all serial) 2 x EK FC 1080ti Blocks Windows 7 Ultimate x64 
MonitorMonitorKeyboardPower
Asus ROG Swift PG348Q (3440x1440 @100hz) CrossOver 27Q Led-P Logitech G15 EVGA SuperNova 1600T2 (Titanium) 
CaseMouseMouse PadAudio
Corsair Obsidian Heavily Modded Logitech G700 RocketFish Speed/Control M-audio AV-40 (Logitech G-35) 
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Reply
Quad Damage
(24 items)
 
  
CPUMotherboardGraphicsRAM
Intel i7 4930k @ 4.6Ghz Asus Rampage IV Extreme (Koolance Full WB) 2 x GTX 1080ti FE in SLI (EK WATERBLOCK) Corsair Dominator GT 2133 MHz (16GB) 
Hard DriveHard DriveHard DriveHard Drive
3 TB Seagate OCZ Vertex 4 256GB Crucial M4 128GB ADATA SX900 128GB 
CoolingCoolingCoolingCooling
RIVE Koolance Waterblock (VRM and PCH) Feser X-Changer 360 Feser X-Changer 240 Feser X-Changer 480 
CoolingCoolingCoolingOS
WaterCool MoRA3 Pro with Gentle Typhoon 3 x MCP 655 pumps (With EK top...all serial) 2 x EK FC 1080ti Blocks Windows 7 Ultimate x64 
MonitorMonitorKeyboardPower
Asus ROG Swift PG348Q (3440x1440 @100hz) CrossOver 27Q Led-P Logitech G15 EVGA SuperNova 1600T2 (Titanium) 
CaseMouseMouse PadAudio
Corsair Obsidian Heavily Modded Logitech G700 RocketFish Speed/Control M-audio AV-40 (Logitech G-35) 
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Reply
post #6 of 7
Put your Vcssa at 1.2v and your ram at 1.6v until you find a stable OC with the lowest possible vcore.

Then lower the voltage on the settings I meantioned a little after that and see how it goes.
    
CPUMotherboardGraphicsRAM
8700k Apex X TITAN X (Pascal)  Trident Z 4400MHz 
Hard DriveCoolingCoolingOS
750 NVMe 1.2TB EK HF/rx360/rx120 EK FC/GTs/mcp655 Windows 10 Pro  
MonitorPowerCaseAudio
BL3200PT 1600 T2 800d Pro Audio 2.1 + DragonFly Red 
  hide details  
Reply
    
CPUMotherboardGraphicsRAM
8700k Apex X TITAN X (Pascal)  Trident Z 4400MHz 
Hard DriveCoolingCoolingOS
750 NVMe 1.2TB EK HF/rx360/rx120 EK FC/GTs/mcp655 Windows 10 Pro  
MonitorPowerCaseAudio
BL3200PT 1600 T2 800d Pro Audio 2.1 + DragonFly Red 
  hide details  
Reply
post #7 of 7
Thread Starter 
Quote:
Originally Posted by MrTOOSHORT View Post

Put your Vcssa at 1.2v and your ram at 1.6v until you find a stable OC with the lowest possible vcore.
Then lower the voltage on the settings I meantioned a little after that and see how it goes.

Oh my OC is ROCK SOLID at that frequency, but I thought my Vcore could be lower and VTT too. But its the lowest I can go.

With the 100 Strap, and 48 Ratio, I have 4800mhz and I use the same vcore as my 4684 mhz profile, 1.38 in both case, I dont know if there is a good explanation to this ! I don't know if the 125mhz strap is more vcore demanding ?!?!?!
Quad Damage
(24 items)
 
  
CPUMotherboardGraphicsRAM
Intel i7 4930k @ 4.6Ghz Asus Rampage IV Extreme (Koolance Full WB) 2 x GTX 1080ti FE in SLI (EK WATERBLOCK) Corsair Dominator GT 2133 MHz (16GB) 
Hard DriveHard DriveHard DriveHard Drive
3 TB Seagate OCZ Vertex 4 256GB Crucial M4 128GB ADATA SX900 128GB 
CoolingCoolingCoolingCooling
RIVE Koolance Waterblock (VRM and PCH) Feser X-Changer 360 Feser X-Changer 240 Feser X-Changer 480 
CoolingCoolingCoolingOS
WaterCool MoRA3 Pro with Gentle Typhoon 3 x MCP 655 pumps (With EK top...all serial) 2 x EK FC 1080ti Blocks Windows 7 Ultimate x64 
MonitorMonitorKeyboardPower
Asus ROG Swift PG348Q (3440x1440 @100hz) CrossOver 27Q Led-P Logitech G15 EVGA SuperNova 1600T2 (Titanium) 
CaseMouseMouse PadAudio
Corsair Obsidian Heavily Modded Logitech G700 RocketFish Speed/Control M-audio AV-40 (Logitech G-35) 
  hide details  
Reply
Quad Damage
(24 items)
 
  
CPUMotherboardGraphicsRAM
Intel i7 4930k @ 4.6Ghz Asus Rampage IV Extreme (Koolance Full WB) 2 x GTX 1080ti FE in SLI (EK WATERBLOCK) Corsair Dominator GT 2133 MHz (16GB) 
Hard DriveHard DriveHard DriveHard Drive
3 TB Seagate OCZ Vertex 4 256GB Crucial M4 128GB ADATA SX900 128GB 
CoolingCoolingCoolingCooling
RIVE Koolance Waterblock (VRM and PCH) Feser X-Changer 360 Feser X-Changer 240 Feser X-Changer 480 
CoolingCoolingCoolingOS
WaterCool MoRA3 Pro with Gentle Typhoon 3 x MCP 655 pumps (With EK top...all serial) 2 x EK FC 1080ti Blocks Windows 7 Ultimate x64 
MonitorMonitorKeyboardPower
Asus ROG Swift PG348Q (3440x1440 @100hz) CrossOver 27Q Led-P Logitech G15 EVGA SuperNova 1600T2 (Titanium) 
CaseMouseMouse PadAudio
Corsair Obsidian Heavily Modded Logitech G700 RocketFish Speed/Control M-audio AV-40 (Logitech G-35) 
  hide details  
Reply
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