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Fixed Voltage or Offset Voltage? (i5-2500K)

post #1 of 3
Thread Starter 
So I have had my 2500K running at 4.8GHz @ 1.365V for a while now but have been noticing people saying you can get more stable overclock by using offset voltage and actually achieve lower VCore than with Fixed Voltage.

So was wondering if there is any truth to this? I'm not exactly happy with this as I started with 1.35V, stable in Prime etc but had a few 124 BSODs at random times while gaming etc.

So I wanna start tweaking the settings again to find out the absolute minimums again.

According to my piece of paper here these are the settings I'm running atm:
- VCore 1.365V
- Memory: 1.5V (Stock)
- PLL Voltage: 1.586V
- Spread Spectrum: On (Seems to give a huge increase in stability by having it "On", also drops BLCK by 0.2MHz??? (99.8MHz))
- VTT/VCCIO/VCCSA: Auto
Gaming Rig
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Gaming Rig
(14 items)
 
  
CPUMotherboardGraphicsRAM
I5-6600K @ 4.7GHz MSI Z170A Gaming Pro Carbon ASUS Radeon R9 390 (1200/1650) 2x4GB 2666MHz 
Hard DriveCoolingOSMonitor
Samsung 830 128GB Phobya Custom Water Windows 10 QNIX QX2710 @ 120Hz 
KeyboardPowerCaseMouse
QPAD MK-50, Blue Switches Rosewill TACHYON 650W Xigmatek Elysium G400 
Mouse PadAudio
MSI Gaming Xonar U7 + AKG Q701 
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post #2 of 3
hrmm..well ..you get lower vcore when it clocks down lachen.gif:
wow your pll voltage is low
why so?
 
Thuban Powah!
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cheap! Newegg box panel ibeats with onboard. 
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Thuban Powah!
(14 items)
 
 
CPUMotherboardGraphicsRAM
Xeon X5650 Asus P6X58D-E Sapphire HD 7950 G.Skill Trident-X 2600 CL10 
Hard DriveCoolingPowerCase
Samsung 840 pro Bong cooler / RASA waterblock Rosewill Capstone Gold 750 None 
MouseMouse PadAudio
cheap! Newegg box panel ibeats with onboard. 
CPUMotherboardGraphicsRAM
AMD Phenom II X6 1075T w/2 cores locked @ 4.2+ M4a89GTD-Pro XFX Radeon HD 5870 8gb Samsung ddr3 1600 11-11-11-28@ 8-8-8-24 
Hard DriveHard DriveOptical DriveCooling
OCZ Agility2 40gb WD Blue 500GB Lite-On RASA waterblock 
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Windows & Linux Samsung 1080p 2 ms Dell Thermaltake TR2-800 
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Cooler Master Elite 330 (was) cheap 
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post #3 of 3

I personally use fixed voltage as for some reason I have issues getting stable with variable voltage. 

 
Gsvlip Dudyrm
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Oda'maksv
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Windows 10 Asus MG279Q - 24" 144Hz 1080p Filco Majestic II w/ Cherry Reds Seasonic X 760W 
CaseMouseMouse PadAudio
Bitfelix Prodigy Logitech G400 Razer Goliath AKG A701 
AudioAudio
JDS Labs Objective 2 JDS Labs ODAC 
CPUMotherboardGraphicsRAM
Core i5 750 3.99 (190x21) 1.376v Load ASUS P7P55d-E Pro GTX 670 FTW <- Poor overclocker :( 8GB (4x2GB) G.Skill DDR3 1600 
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Gsvlip Dudyrm
(15 items)
 
Oda'maksv
(9 items)
 
CPUMotherboardGraphicsRAM
3770k @ 4.5 1.312 load Zotac Z77 ITX Wifi GTX 1070 Gaming 2126/2249 w/ Hybrid cooler TridentX 16GB 2400MHz 
Hard DriveHard DriveCoolingCooling
Samsung 850 Pro 1TB Seagate 2TB H105 EVGA Hybrid GPU cooler 
OSMonitorKeyboardPower
Windows 10 Asus MG279Q - 24" 144Hz 1080p Filco Majestic II w/ Cherry Reds Seasonic X 760W 
CaseMouseMouse PadAudio
Bitfelix Prodigy Logitech G400 Razer Goliath AKG A701 
AudioAudio
JDS Labs Objective 2 JDS Labs ODAC 
CPUMotherboardGraphicsRAM
Core i5 750 3.99 (190x21) 1.376v Load ASUS P7P55d-E Pro GTX 670 FTW <- Poor overclocker :( 8GB (4x2GB) G.Skill DDR3 1600 
Hard DriveHard DriveOptical DriveOS
Samsung 830 Evo 128GB 2x 2TB  Some DVD drive OSX 10.10.4 
MonitorPowerCaseMouse
Asus 1080P Crap TX 750 HAF 922 G400s 
Mouse PadOther
Apple Keyboard Xbox One controler 
CPURAMHard DriveHard Drive
C2D 2,26GHz under volted @ .978v 8GB  Crucial M4 64GB SSD 500GB Scorpio Black 
OSMonitorKeyboardMouse
OS X 10.0 1280x800 Built-in Trackpad 
Audio
Built-in 
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