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Try to OC my PII 965 and may reached a bottleneck...

post #1 of 3
Thread Starter 
Hi everyone,

I'm a newbie at OC so hopefully you guys could give me some suggestions. I just got the new mobo from newegg, the latest asrock 990fx extreme9 and it boasts 12+2 phases...I use CM 212+ cooler, and may consider upgrade that. Well, I just know how to raise multipliers on the 965 while running at stock voltage. Now the max frequency that the PC runs is 4.2 GHz (21x multiplier) at 1.475V (stock). Anything more would make the system unstable. While running prime 95, the temperature may reach a max of 60 C, but most of the time hang around 55 C. The voltage (according to HW monitor) increased up to 1.568 which is definitely too high. BTW the LLC is turned off (it says so in the UEFI if I want to OC manually), as well as CnQ. Is it possible to push the chip a bit higher by increase the voltage or changing FSB frequency? Thank you.
post #2 of 3
Try to increase the LLC in stages, that much vDroop is amazingly unaceptable
     
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CPUMotherboardGraphicsRAM
Intel Core i7 3820 @ 4.3GHz ASUS Rampage IV Formula X79 EVGA GTX 980 Ti Hybrid @ 1.45GHz/1.9GHz Corsair Dominator 16gb @ 2.2GHz C9 
Hard DriveHard DriveHard DriveHard Drive
Samsung 850 EVO 250GB WD Caviar Blue 1tb 7200RPM WD Caviar Blue 1tb 7200RPM WD Caviar Blue 500gb 7200RPM 
CoolingOSMonitorKeyboard
120.5 Custom Loop Windows 10 Pro x64 LG D2343P-BN 3D Monitor @ 70Hz Corsair K70 (MX Brown) 
PowerCaseMouseAudio
Corsair AX Series 850w 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 
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post #3 of 3
1.568v, that's very high. Deneb can knock out from temperature, try to keep it under 60c at all times.


Also, it could be your internal multiplier has hit a wall, in which raising the PLL voltage can help slightly, +VDDA voltage is the internal circuity so upping this can help. I wouldn't suggest increasing these but they're the voltages for higher multiplier so you know.

You could try learning how to raise the FSB which can show better results and sometimes better stability.

Raise FSB in increments of 10 until you cannot POST. The way to do it is to ensure DRAM, HT link and CPU/NB frequency are all at stock settings.

So you get the FSB as high as possible then you start on the multiplier overclock. CPU/NB is the last part and Deneb really benefits from a CPU/NB overclock in terms of performance. Stability wise you should get it at 2700mhz for about 4Ghz.
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