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q9400 max voltage

post #1 of 4
Thread Starter 
I no that the max voltge is 1.3265 for this chip, My ? is that considered at idle or after vdroop? Got a ep45-ud3r moob and getting some serious vdroop
post #2 of 4
Intel's max recommended safe op voltage for your CPU is NOT 1.3265. It is 1.3625.

That voltage is supposed to be read from CPUZ at Windows and with your cores under max load. Yes, this means that you can safely go higher than 1.3625 in BIOS.

Intel's absolute maximum VCORE for 45nm CPUS is 1.45V. Intel do not consider 1.45V to be safe op voltage, but in practise every overclocker runs their 45nm CPU around 1.40ish V Vcore in BIOS.

Here's, for example, my modest 4GHz OC on my Intel Core 2 Extreme QX9650:



VCore reads "1.385" but the VCORE at BIOS is 1.40625. You eliminate VDROOP by enabling your LLC (Loadline Calibration). My LLC is enabled, and I consider overclocking a 45nm CPU with LLC off a niche for masochists.
QX 9650: Retired
(17 items)
 
   
CPUMotherboardGraphicsRAM
Intel Core 2 Extreme QX9650 Asus P5Q DELUXE Gigabyte NVIDIA GeForce GTX 580 Super Overclock GSKILL Trident Extreme Performance Memory F2-88... 
RAMRAMRAMHard Drive
GSKILL Trident Extreme Performance Memory F2-88... GSKILL Trident Extreme Performance Memory F2-88... GSKILL Trident Extreme Performance Memory F2-88... Western Digital Caviar Blue 
Hard DriveCoolingOSMonitor
Western Digital Caviar Blue Thermaltake Frio Overclock King Windows 7 Professional  Philips FTV 32PFL5605H, 32'' 
KeyboardPowerCaseMouse
Microsoft Comfort Curve Silverstone Strider Gold, 850W Cooler Master Cosmos RC 1000 Microsoft Intelli Mouse 
Audio
SoundBlaster Audigy 
CPUMotherboardGraphicsRAM
Intel® Core™ i7-4770K Processor Asus Maximus VI Hero Gigabyte GTX 780 ti GHz edition G.SKILL ARES F3-2400C11Q-32GAB 
Hard DriveHard DriveHard DriveHard Drive
WD Blue 6TB Desktop Hard Disk Drive WD Blue 6TB Desktop Hard Disk Drive Samsung 840 Evo 500 GB Samsung 750 Evo 120 GB 
Optical DriveCoolingOSMonitor
LG GDR-H30N DVD-ROM DRIVE Thermaltake Frio Overclock King Windows 7 Professional  Acer Predator X34 
KeyboardPowerCaseMouse
Microsoft Comfort Curve Silverstone Strider Gold, 850W Corsair 780T Microsoft Intelli Mouse 
CPUMotherboardGraphicsRAM
Pentium 4 Northwood@3.06 GHz with HT Single Cor... Intel 845 PE Brookdale based Toshiba BTR80 on T... Nvidia GeForce4 460 Go DDR1 1GB 
RAMHard DriveOS
DDR1 1GB Western Digital Scorpio Blue WD2500BEVE 250GB Windows XP 32bit Home Edition 
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QX 9650: Retired
(17 items)
 
   
CPUMotherboardGraphicsRAM
Intel Core 2 Extreme QX9650 Asus P5Q DELUXE Gigabyte NVIDIA GeForce GTX 580 Super Overclock GSKILL Trident Extreme Performance Memory F2-88... 
RAMRAMRAMHard Drive
GSKILL Trident Extreme Performance Memory F2-88... GSKILL Trident Extreme Performance Memory F2-88... GSKILL Trident Extreme Performance Memory F2-88... Western Digital Caviar Blue 
Hard DriveCoolingOSMonitor
Western Digital Caviar Blue Thermaltake Frio Overclock King Windows 7 Professional  Philips FTV 32PFL5605H, 32'' 
KeyboardPowerCaseMouse
Microsoft Comfort Curve Silverstone Strider Gold, 850W Cooler Master Cosmos RC 1000 Microsoft Intelli Mouse 
Audio
SoundBlaster Audigy 
CPUMotherboardGraphicsRAM
Intel® Core™ i7-4770K Processor Asus Maximus VI Hero Gigabyte GTX 780 ti GHz edition G.SKILL ARES F3-2400C11Q-32GAB 
Hard DriveHard DriveHard DriveHard Drive
WD Blue 6TB Desktop Hard Disk Drive WD Blue 6TB Desktop Hard Disk Drive Samsung 840 Evo 500 GB Samsung 750 Evo 120 GB 
Optical DriveCoolingOSMonitor
LG GDR-H30N DVD-ROM DRIVE Thermaltake Frio Overclock King Windows 7 Professional  Acer Predator X34 
KeyboardPowerCaseMouse
Microsoft Comfort Curve Silverstone Strider Gold, 850W Corsair 780T Microsoft Intelli Mouse 
CPUMotherboardGraphicsRAM
Pentium 4 Northwood@3.06 GHz with HT Single Cor... Intel 845 PE Brookdale based Toshiba BTR80 on T... Nvidia GeForce4 460 Go DDR1 1GB 
RAMHard DriveOS
DDR1 1GB Western Digital Scorpio Blue WD2500BEVE 250GB Windows XP 32bit Home Edition 
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post #3 of 4
Thread Starter 
i appreciate your reply to help me understand. Now i no i can crank it up now. trying to get to 3.6 havent had much luck with stabily.
post #4 of 4
Unfortunately you have got a Gigabyte motherboard. I can't help you b/c I don't know how to OC a Gigabyte mobo and their BIOS is terribad for overclocking. I used to own a GA-P35-DS4 mobo which I got rid immediately after it became apparent that I could not OC my CPU on that board any higher than 3.79 GHz. In fact, my experience with Gigabyte's terribad BIOS was so bad, that I never bought another mobo from them since 2008, and in fact I recommend people who are interested in OC to buy ASUS motherboards only, due to their very extensive and OC friendly BIOS.

In short terms, Yorkfield overclocking is based on manipulation of FSB Termination Voltage, CPU PLL voltage, and Northbridge Voltage.

ANANDTECH's recommended maximum voltages are here:



Good luck in deciphering your BIOS. Sorry I can't help.
QX 9650: Retired
(17 items)
 
   
CPUMotherboardGraphicsRAM
Intel Core 2 Extreme QX9650 Asus P5Q DELUXE Gigabyte NVIDIA GeForce GTX 580 Super Overclock GSKILL Trident Extreme Performance Memory F2-88... 
RAMRAMRAMHard Drive
GSKILL Trident Extreme Performance Memory F2-88... GSKILL Trident Extreme Performance Memory F2-88... GSKILL Trident Extreme Performance Memory F2-88... Western Digital Caviar Blue 
Hard DriveCoolingOSMonitor
Western Digital Caviar Blue Thermaltake Frio Overclock King Windows 7 Professional  Philips FTV 32PFL5605H, 32'' 
KeyboardPowerCaseMouse
Microsoft Comfort Curve Silverstone Strider Gold, 850W Cooler Master Cosmos RC 1000 Microsoft Intelli Mouse 
Audio
SoundBlaster Audigy 
CPUMotherboardGraphicsRAM
Intel® Core™ i7-4770K Processor Asus Maximus VI Hero Gigabyte GTX 780 ti GHz edition G.SKILL ARES F3-2400C11Q-32GAB 
Hard DriveHard DriveHard DriveHard Drive
WD Blue 6TB Desktop Hard Disk Drive WD Blue 6TB Desktop Hard Disk Drive Samsung 840 Evo 500 GB Samsung 750 Evo 120 GB 
Optical DriveCoolingOSMonitor
LG GDR-H30N DVD-ROM DRIVE Thermaltake Frio Overclock King Windows 7 Professional  Acer Predator X34 
KeyboardPowerCaseMouse
Microsoft Comfort Curve Silverstone Strider Gold, 850W Corsair 780T Microsoft Intelli Mouse 
CPUMotherboardGraphicsRAM
Pentium 4 Northwood@3.06 GHz with HT Single Cor... Intel 845 PE Brookdale based Toshiba BTR80 on T... Nvidia GeForce4 460 Go DDR1 1GB 
RAMHard DriveOS
DDR1 1GB Western Digital Scorpio Blue WD2500BEVE 250GB Windows XP 32bit Home Edition 
  hide details  
Reply
QX 9650: Retired
(17 items)
 
   
CPUMotherboardGraphicsRAM
Intel Core 2 Extreme QX9650 Asus P5Q DELUXE Gigabyte NVIDIA GeForce GTX 580 Super Overclock GSKILL Trident Extreme Performance Memory F2-88... 
RAMRAMRAMHard Drive
GSKILL Trident Extreme Performance Memory F2-88... GSKILL Trident Extreme Performance Memory F2-88... GSKILL Trident Extreme Performance Memory F2-88... Western Digital Caviar Blue 
Hard DriveCoolingOSMonitor
Western Digital Caviar Blue Thermaltake Frio Overclock King Windows 7 Professional  Philips FTV 32PFL5605H, 32'' 
KeyboardPowerCaseMouse
Microsoft Comfort Curve Silverstone Strider Gold, 850W Cooler Master Cosmos RC 1000 Microsoft Intelli Mouse 
Audio
SoundBlaster Audigy 
CPUMotherboardGraphicsRAM
Intel® Core™ i7-4770K Processor Asus Maximus VI Hero Gigabyte GTX 780 ti GHz edition G.SKILL ARES F3-2400C11Q-32GAB 
Hard DriveHard DriveHard DriveHard Drive
WD Blue 6TB Desktop Hard Disk Drive WD Blue 6TB Desktop Hard Disk Drive Samsung 840 Evo 500 GB Samsung 750 Evo 120 GB 
Optical DriveCoolingOSMonitor
LG GDR-H30N DVD-ROM DRIVE Thermaltake Frio Overclock King Windows 7 Professional  Acer Predator X34 
KeyboardPowerCaseMouse
Microsoft Comfort Curve Silverstone Strider Gold, 850W Corsair 780T Microsoft Intelli Mouse 
CPUMotherboardGraphicsRAM
Pentium 4 Northwood@3.06 GHz with HT Single Cor... Intel 845 PE Brookdale based Toshiba BTR80 on T... Nvidia GeForce4 460 Go DDR1 1GB 
RAMHard DriveOS
DDR1 1GB Western Digital Scorpio Blue WD2500BEVE 250GB Windows XP 32bit Home Edition 
  hide details  
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