Overclock.net › Forums › Intel › Intel CPUs › i7 990x Overclocking Help
New Posts  All Forums:Forum Nav:

i7 990x Overclocking Help

post #1 of 5
Thread Starter 
Hi there, I need some help to overclock this CPU. I've tried one of the pre-set overclock configurations in the BIOS, the 4.0 GHz one, but it has the VCore too high; 1,375V.
I've taken it down to 1.25V manually, also in the BIOS. I'll let you see an image of ROG CPU-Z. What I really need is some general help, step by step recomendations, etc.
Now it works fine, but I want it to be more optimized. My goal is 4.0 GHz, but I want to have the best settings so I won't damage the CPU or something. Temps are fine, @ 22-23ºC room temp -> CPU is @ 30ºC idle, 50ºC load.


Thanks.
post #2 of 5
To be honest, 1.375 is a tad high for just 4GHz, but it won't kill it, they should be good for 1.4V+, course the lower the better.

Just raise Multi and fine tune with FSB or BLCK, i think your supposed to leave BLCK alone, but I'm not sure if that rule holds for the 1st i7's? lol

Start with 4Ghz and 1.25V and see if she boots, then Run IBT for 10-15 rounds or PRIME95 for a few hours, if stable, down the Vcore one or two notches and try again, once you Freeze or BSOD, go back up 1-2 Notches and be happy smile.gif Keep her below 70C though and don't go over 1.385 unless you have to for the last bit if tuning.

I don't see why you couldn't hit 4.5Ghz at around 1.325V or less, maybe 1.350V Max. But every CPU is a Lottery, so don't take my numbers to heart.

Good luck and anything else? smile.gif
 
Folding Skyline
(16 items)
 
SkylineServer
(17 items)
 
CPUMotherboardGraphicsRAM
Intel i7 5820K @ (Not Stock) ASUS X99-A Nvidia EVGA GTX 1080 Ti FE @ 2,000+ Kingston HyperX DDR4 3200Mhz (4x4GB) 
Hard DriveHard DriveHard DriveOptical Drive
Crucial MX100 128GB SATA III SSD (OS) Western Digital 2TB SATA III (Data) Crucial MX300 275GB SATA III SSD (Game) LG SATA Light-Scribe DVD+/-RW Drive 
CoolingOSMonitorMonitor
Corsair H100i Pull x2 Windows 10 Pro 64 Bit SP2 Vizio 40" 1920x1080 60/120Hz TV/Monitor Dell SX2210 DVI 1920x1080 
KeyboardPowerCaseMouse
Logitech G11 Gaming Keyboard  Corsair Professional Series HX850W Rosewill Thor V2 Black/White L.E. Full Tower Case Logitech Ball Pro 
Mouse PadAudio
What Pad? >_< Logitech Z4 2.1 Stereo System  
CPUMotherboardGraphicsRAM
Intel Q6600 @ ~3Ghz MSI 775 Aftermarket Mobo Nvida GTX 770 LE 2GB @ ~1,300+ 2x2GB (4GB) 800Mhz DDR2 RAM 
Hard DriveOptical DriveCoolingOS
Seagate 160GB DVD/CD Writer/Burner Cooler Master 92mm Windows 7 64 Bit Ultimate Basic 
MonitorKeyboardPowerCase
Dell 18" LCD DVI Dell QWERTY Corsair CX500 500W PSU Spartan Series 
MouseMouse PadAudioOther
Dell Laser N/A Internal Speaker 240mm Fan to Cool GPU 
CPUCPUMotherboardGraphics
Intel E5410 2.33Ghz Intel E5410 2.33Ghz Dell T7400 Dual Xeon Nvidia Quadro 290 
RAMHard DriveOptical DriveCooling
16GB Samsung ECC RAM DDR2 800Mhz Seagate Barrcuda 500GB 7,200RPM (OS) DVD/CD Writer/Burner Dual Intel Xeon Heatsinks w/ 200mm Delta Fan 
OSMonitorKeyboardPower
Windows 7 64 Bit Ultimate Dell Precision 18" LCD DVI  Dell Precision 104 QWERTY Dell/Delta 850W Dual Rail PSU 
CaseMouseMouse PadAudio
Dell Precision T7400 Server Case  Dell Precision Laser N/A Internal Speaker 
Other
Linksys Gigabit Ehternet Card 
  hide details  
Reply
 
Folding Skyline
(16 items)
 
SkylineServer
(17 items)
 
CPUMotherboardGraphicsRAM
Intel i7 5820K @ (Not Stock) ASUS X99-A Nvidia EVGA GTX 1080 Ti FE @ 2,000+ Kingston HyperX DDR4 3200Mhz (4x4GB) 
Hard DriveHard DriveHard DriveOptical Drive
Crucial MX100 128GB SATA III SSD (OS) Western Digital 2TB SATA III (Data) Crucial MX300 275GB SATA III SSD (Game) LG SATA Light-Scribe DVD+/-RW Drive 
CoolingOSMonitorMonitor
Corsair H100i Pull x2 Windows 10 Pro 64 Bit SP2 Vizio 40" 1920x1080 60/120Hz TV/Monitor Dell SX2210 DVI 1920x1080 
KeyboardPowerCaseMouse
Logitech G11 Gaming Keyboard  Corsair Professional Series HX850W Rosewill Thor V2 Black/White L.E. Full Tower Case Logitech Ball Pro 
Mouse PadAudio
What Pad? >_< Logitech Z4 2.1 Stereo System  
CPUMotherboardGraphicsRAM
Intel Q6600 @ ~3Ghz MSI 775 Aftermarket Mobo Nvida GTX 770 LE 2GB @ ~1,300+ 2x2GB (4GB) 800Mhz DDR2 RAM 
Hard DriveOptical DriveCoolingOS
Seagate 160GB DVD/CD Writer/Burner Cooler Master 92mm Windows 7 64 Bit Ultimate Basic 
MonitorKeyboardPowerCase
Dell 18" LCD DVI Dell QWERTY Corsair CX500 500W PSU Spartan Series 
MouseMouse PadAudioOther
Dell Laser N/A Internal Speaker 240mm Fan to Cool GPU 
CPUCPUMotherboardGraphics
Intel E5410 2.33Ghz Intel E5410 2.33Ghz Dell T7400 Dual Xeon Nvidia Quadro 290 
RAMHard DriveOptical DriveCooling
16GB Samsung ECC RAM DDR2 800Mhz Seagate Barrcuda 500GB 7,200RPM (OS) DVD/CD Writer/Burner Dual Intel Xeon Heatsinks w/ 200mm Delta Fan 
OSMonitorKeyboardPower
Windows 7 64 Bit Ultimate Dell Precision 18" LCD DVI  Dell Precision 104 QWERTY Dell/Delta 850W Dual Rail PSU 
CaseMouseMouse PadAudio
Dell Precision T7400 Server Case  Dell Precision Laser N/A Internal Speaker 
Other
Linksys Gigabit Ehternet Card 
  hide details  
Reply
post #3 of 5
Start back at stock, then slowly up the multiplier to 30, in between multi adjustments, make sure to test P95 for 5Minutes, if it passes, go back and up it again, do this until you cant boot or fail P95, at this point, you may need to reset the CMOS, if that is the case then do so. Then restore the last known good settings, and add one for step in the CPU vCore, and repeat. See how far you can go using this method.

Dony forget to turn off any power saving options and set the LLC to medium or High
     
CPUMotherboardGraphicsRAM
Intel Core i7 3820 @ 4.5Ghz ASUS Rampage IV Formula X79 EVGA GTX 980 Ti Hybrid @ 1450/1900 Corsair Dominator 16gb @ 2.2GHz C9 
Hard DriveHard DriveHard DriveCooling
WD Caviar Blue 1tb 7200RPM WD Caviar Blue 1tb 7200RPM WD Caviar Blue 500gb 7200RPM 120.5 Custom Loop 
OSMonitorKeyboardPower
Windows 10 Pro x64 LG D2343P-BN 3D Monitor @ 70Hz Corsair K70 (MX Brown) Corsair AX Series 850w 
CaseMouseAudio
NZXT Switch 810 Black (Heavily Modded) Logitech G502 Proteus Spectrum Sennheiser HD 598 Cs 
CPUMotherboardGraphicsRAM
AMD FX-6300 @ 4.5Ghz Gigabyte 970A UD3 AMD HD8490 (OEM) @ 1.1Ghz Core/Mem Patriot Viper Xtreme 8gb @1600MHz 8-8-8-24 
Optical DriveCoolingCoolingOS
LiteOn Bluray Player Corsair Hydro Series H100i Zalman 120mm Led Fans x4 Windows 10 Pro x64 
MonitorKeyboardPowerCase
Hitachi 24" 70Hz Monitor Logitech EX110 OCZ ZT 550w Full Modular Zalman Z9 Plus 
MouseAudioOther
DELL Wireless Mouse Logitech 5.1 Sound System TP-Link TL-WN781ND Wireless Card 
  hide details  
Reply
     
CPUMotherboardGraphicsRAM
Intel Core i7 3820 @ 4.5Ghz ASUS Rampage IV Formula X79 EVGA GTX 980 Ti Hybrid @ 1450/1900 Corsair Dominator 16gb @ 2.2GHz C9 
Hard DriveHard DriveHard DriveCooling
WD Caviar Blue 1tb 7200RPM WD Caviar Blue 1tb 7200RPM WD Caviar Blue 500gb 7200RPM 120.5 Custom Loop 
OSMonitorKeyboardPower
Windows 10 Pro x64 LG D2343P-BN 3D Monitor @ 70Hz Corsair K70 (MX Brown) Corsair AX Series 850w 
CaseMouseAudio
NZXT Switch 810 Black (Heavily Modded) Logitech G502 Proteus Spectrum Sennheiser HD 598 Cs 
CPUMotherboardGraphicsRAM
AMD FX-6300 @ 4.5Ghz Gigabyte 970A UD3 AMD HD8490 (OEM) @ 1.1Ghz Core/Mem Patriot Viper Xtreme 8gb @1600MHz 8-8-8-24 
Optical DriveCoolingCoolingOS
LiteOn Bluray Player Corsair Hydro Series H100i Zalman 120mm Led Fans x4 Windows 10 Pro x64 
MonitorKeyboardPowerCase
Hitachi 24" 70Hz Monitor Logitech EX110 OCZ ZT 550w Full Modular Zalman Z9 Plus 
MouseAudioOther
DELL Wireless Mouse Logitech 5.1 Sound System TP-Link TL-WN781ND Wireless Card 
  hide details  
Reply
post #4 of 5
Thread Starter 
Thanks guys, I've followed Pedro's steps, and I've put it back to the stock settings (multi x25). Then I touched (always in BIOS) the multiplier ONLY. I took the multi firstly to x28 (stock I think is 25x-26x), and then x30 and ran Prime95 for 5 min on both. Now, the BIOS has automatically increased core voltage to 1.296V.

Let me explain myself:

-I firstly enabled my BIOS' pre-set configuration of 4.0 GHz; multiplier was 30x, bus was 133,5 MHz, and VCore was 1,375V, all did it the BIOS alone, I just enabled the 4.0 GHz OC option.
-Now, I've restored everything on auto and took ONLY the multiplier to 30x; bus is 133,5 MHz, and VCore is 1.296V.

Both voltages are automatically increased or decreased JUST A LITTLE BIT (less than -0.01V+) by the system, but as you can see, now the voltage is lower if I only touch the multiplier.

What I want to know is: Is the voltage still high or it is fine?

Cause it's the BIOS AUTO voltage setting for that multi (x30), not sure if I should touch modify it.

Thanks again.

post #5 of 5
Sorry, I should have said to set the voltage to manual and just input the stock one and go from there, it has been a looong day
     
CPUMotherboardGraphicsRAM
Intel Core i7 3820 @ 4.5Ghz ASUS Rampage IV Formula X79 EVGA GTX 980 Ti Hybrid @ 1450/1900 Corsair Dominator 16gb @ 2.2GHz C9 
Hard DriveHard DriveHard DriveCooling
WD Caviar Blue 1tb 7200RPM WD Caviar Blue 1tb 7200RPM WD Caviar Blue 500gb 7200RPM 120.5 Custom Loop 
OSMonitorKeyboardPower
Windows 10 Pro x64 LG D2343P-BN 3D Monitor @ 70Hz Corsair K70 (MX Brown) Corsair AX Series 850w 
CaseMouseAudio
NZXT Switch 810 Black (Heavily Modded) Logitech G502 Proteus Spectrum Sennheiser HD 598 Cs 
CPUMotherboardGraphicsRAM
AMD FX-6300 @ 4.5Ghz Gigabyte 970A UD3 AMD HD8490 (OEM) @ 1.1Ghz Core/Mem Patriot Viper Xtreme 8gb @1600MHz 8-8-8-24 
Optical DriveCoolingCoolingOS
LiteOn Bluray Player Corsair Hydro Series H100i Zalman 120mm Led Fans x4 Windows 10 Pro x64 
MonitorKeyboardPowerCase
Hitachi 24" 70Hz Monitor Logitech EX110 OCZ ZT 550w Full Modular Zalman Z9 Plus 
MouseAudioOther
DELL Wireless Mouse Logitech 5.1 Sound System TP-Link TL-WN781ND Wireless Card 
  hide details  
Reply
     
CPUMotherboardGraphicsRAM
Intel Core i7 3820 @ 4.5Ghz ASUS Rampage IV Formula X79 EVGA GTX 980 Ti Hybrid @ 1450/1900 Corsair Dominator 16gb @ 2.2GHz C9 
Hard DriveHard DriveHard DriveCooling
WD Caviar Blue 1tb 7200RPM WD Caviar Blue 1tb 7200RPM WD Caviar Blue 500gb 7200RPM 120.5 Custom Loop 
OSMonitorKeyboardPower
Windows 10 Pro x64 LG D2343P-BN 3D Monitor @ 70Hz Corsair K70 (MX Brown) Corsair AX Series 850w 
CaseMouseAudio
NZXT Switch 810 Black (Heavily Modded) Logitech G502 Proteus Spectrum Sennheiser HD 598 Cs 
CPUMotherboardGraphicsRAM
AMD FX-6300 @ 4.5Ghz Gigabyte 970A UD3 AMD HD8490 (OEM) @ 1.1Ghz Core/Mem Patriot Viper Xtreme 8gb @1600MHz 8-8-8-24 
Optical DriveCoolingCoolingOS
LiteOn Bluray Player Corsair Hydro Series H100i Zalman 120mm Led Fans x4 Windows 10 Pro x64 
MonitorKeyboardPowerCase
Hitachi 24" 70Hz Monitor Logitech EX110 OCZ ZT 550w Full Modular Zalman Z9 Plus 
MouseAudioOther
DELL Wireless Mouse Logitech 5.1 Sound System TP-Link TL-WN781ND Wireless Card 
  hide details  
Reply
New Posts  All Forums:Forum Nav:
  Return Home
  Back to Forum: Intel CPUs
Overclock.net › Forums › Intel › Intel CPUs › i7 990x Overclocking Help