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Hit a wall with my OC

post #1 of 7
Thread Starter 
System is my sig rig.

I've run Prime95 for 8hrs at 1.36v @ 3.36ghz. Perfectly stable.

Tried to bump up to 3.5ghz. Won't boot past BIOS.

HT and FSB at 2000. Stock voltages on them.

RAM; Tried dropping it down to 500ddr3 speed. No go. Loosened the timings from 6-6-6-15 to 9-9-9-27...still no go.

Tried bumping Vcore up from 1.36 all the way to 1.4...no dice Chicago.

Thoughts on where to go from here? Am I missing something simple? I'm a bit befuddled as to why there's a huge roadblock at 3.5ghz. Temps are fine (full load at 3.36ghz was 35c, so that shouldn't be the issue). Boost RAM volts maybe?

Any advice would be wonderful, and I thank you all in advance for any ideas.
Blue4u
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Blue4u
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post #2 of 7
may want to add more voltage on cpuand cpu north bridge, but cpu north bridge first as this is the thing that got me stable at 4.1
shably
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shably
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post #3 of 7
Not sure how different the 830s are from the 9xx's but upto 1.5v is np for me.
post #4 of 7
You are aware that you can safely go to at least 1.475v so just up the Vcore untill it works. I'm at 1.462v now . I would be rather suprised if you got it stable at 3.5 with only 1.36v.
Sandy Thunder
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QuickSilver X1
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Sandy Thunder
(18 items)
 
QuickSilver X1
(15 items)
 
 
CPUMotherboardGraphicsRAM
i7-3930k C1 4.6GHz @1.344v Sabertooth X79 2x EVGA GTX 560 Ti SC SLI 900/2106 Dominator 1866 16GB 9-10-9-27 
Hard DriveHard DriveCoolingOS
Crucial M4 64GB 'Cuda 320GB XSPC Rasa 750 RX240 push/pull + Alphacool UT60 ... Win 7 Pro x64 
MonitorMonitorMonitorKeyboard
Asus VE198D 19" Samsung 920NW 19" Samsung 906BW 19" Logitech G510s 
PowerCaseMouseMouse Pad
Corsair HX850M Carbide 400R Cyborg M.M.O. 7 Corsair MM200 
AudioOther
Bose Music Monitor Nuforce Icon HDP 
CPUMotherboardGraphicsRAM
Phenom II x6 1090T BE Sabertooth 990FX Radeon HD 5770 1GB Corsair Veangence Blue 
Hard DriveOptical DriveCoolingOS
WD Caviar Black 1TB  Lite ON 16x DVD-R/RW ThermalRight Silver Arrow Windows 7 Professional 64 bit 
MonitorKeyboardPowerCase
Syncmaster 921BW 19" & Syncmaster 965 19" and S... Apple aluminum wired keyboard Corsair TX650 Silverstone TJ05 with window and thermal contro... 
MouseMouse PadAudio
logitech mx air None Monsoon MM-700 
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post #5 of 7
Thread Starter 
Quote:
Originally Posted by DSP1 View Post
You are aware that you can safely go to at least 1.475v so just up the Vcore untill it works. I'm at 1.462v now . I would be rather suprised if you got it stable at 3.5 with only 1.36v.
I just worry about pumping too much voltage through my mobo...it's not as nice as the ones y'all have.
Blue4u
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Blue4u
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post #6 of 7
Thread Starter 
Well, I can get into Windows now by bumping up the RAM volts to 1.77....Don't really feel comfortable with them that high, and it's still not passing a Prime95 test. VCore at 1.42 atm. HT and NB at 2000.
Blue4u
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Blue4u
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post #7 of 7
Thread Starter 
No one has any suggestions? I've updated the link in my sig with the last stable OC settings. 3.36ghz is no problem...runs like a dream. 3.5ghz is the opposite. Only way I've even managed to get into windows is by upping RAM voltage to 1.77 (rated 1.5v...corsair sticks, can provide link to the product if necessary). I've raised NB volts from 1.2 stock to 1.35 to no avail (they're sitting at 1.3 currently at 3.36 OC), I've raised Vcore all the way up to 1.42 (sitting at 1.365 at 3.36ghz now) and no change, save the massive RAM volting will get me past BIOS.

I've loosened ram timings from the 6-6-6-15 that i'm running on the 3.36 oc to 9-9-9-27 to no avail. I've actually tried switching em back to auto, dropped the RAM speed manually to the lowest setting speed-wise (500mhz), and still stability eludes me.

I'm hesitant to continue to pump more voltage into the mobo, as it's a 4+1 power phase...especially since the jump from 1.36 to 1.42 has done absolutely nothing to improve stability at 3.5ghz. (at least I'm hesitant until I can assure myself that pumping more into it won't likely harm the board).

Temps are 35c under full Prime95 load, ambients are ~24c, so temperature isn't an issue right now.

Any ideas that I can try would be wonderful. I'd hate to think it's a "bad luck" chip that just isn't going to get any higher. (if that's the case, so be it...but i'm hoping it's not).

Thanks,

MrHyde
Blue4u
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Blue4u
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