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Overclocking 3930K

post #1 of 7
Thread Starter 
Hey,

I'm currently trying to get a nice 24/7 overclock going (As in I'm looking for a overclock that I can run with all the time, not something just to do a few benches) and I was wondering if I could get some advice biggrin.gif

At the moment I've quickly setup a 4.75Ghz overclock (cpu strap 125mhz, x38) at a vcore of 1.42v. Not played around too much with the voltage but if I drop it down to 1.4v then it bluescreens when I fire up prime95. It is under water and running at an average temp of 61c under prime95.

What is a safe voltage for 24/7 under water? Anyone got any tips on if/how I can push it further?

Thanks smile.gif
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post #2 of 7
Make sure you set things like Load Line Calibration to a higher setting to reduce the amount of Vdroop when under 100% load. Personally i wouldn't go beyond 1.45v for 24/7 use
Edited by Mhill2029 - 12/6/11 at 9:13am
 
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post #3 of 7
so far said 1.375v is the max with SB-E. I'm using 1.375v for 4.8ghz on my 3930k, but starting to play with the right offset to LLC ratio now. Are you using offset or manual Vcore. Do you want you Cpu to stay at 4.75ghz all the time with your Vcore at 1.42v all the time, or do you want it to drop to 1.2ghz and .9xx volts at idle? I choose to use offset so my chip lasts longer.
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post #4 of 7
Thread Starter 
Thanks. Forgot to mention I also set the CPU load line calibration to high and cpu current capability to 140%.
Quote:
Originally Posted by Mhill2029 View Post

Make sure you set things like Load Line Calibration to a higher setting to reduce the amount of Vdroop when under 100% load. Personally i wouldn't go beyond 1.45v for 24/7 use
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post #5 of 7
140% is pretty high. you don't need it that high. 130% will cover 5ghz no prob.
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post #6 of 7
Thread Starter 
I'd like to use offset mode but I can't seem to find any information as to what the default vcore values it uses so I know what offset vcore to use. Currently it is just set to 1.42v manual.
Quote:
Originally Posted by Hambone07si View Post

so far said 1.375v is the max with SB-E. I'm using 1.375v for 4.8ghz on my 3930k, but starting to play with the right offset to LLC ratio now. Are you using offset or manual Vcore. Do you want you Cpu to stay at 4.75ghz all the time with your Vcore at 1.42v all the time, or do you want it to drop to 1.2ghz and .9xx volts at idle? I choose to use offset so my chip lasts longer.

Okay, thanks. I'll have a play around with lowering it.
Quote:
Originally Posted by Hambone07si View Post

140% is pretty high. you don't need it that high. 130% will cover 5ghz no prob.
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Samsung 840 Pro 256GB SSD None EK Supreme HF Waterblock Windows 8.1 Pro 
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post #7 of 7
You should first find what cpu speed you want to run (4.75ghz) and what it takes to get stable (1.420v). Once you know that's stable, then move to offset voltage and set it to +.050v and boot into windows and run prime and see what the Vcore is at load. If it matches your 1.420v then your good. If it's hitting say 1.440v, then you would want to drop to +.030v offset. Also LLC play apart with offset too. You can control how much Idle Vcore you have by droppng LLC to raise or raise it to drop Idle Vcore.
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4790K @ 5ghz 1.350v 75c max load temps Asus Maximus VI Formula Evga Gtx Titan X @ 1500mhz / 7800mhz +112mv EK Acetal / Nickel / Nickel back plate 
RAMHard DriveHard DriveOptical Drive
Corsair Vengence Pro 32gig 2400mhz c11 red (4x8... 6x 256gig (1.5tb) in Raid 0 , OS / Gaming Drive 2 x Liteon 256gig (512gig) storage drives Asus Dvd-RW 
CoolingCoolingCoolingOS
2x 360mm Alphacool XT45 / 1x 480mm Alphacool Mo... EK X-Res 140 D5 vario Pump/Res combo + EK X-top... EK Supreme HF cpu / EK Acetal / Nickel with Nic... Windows 8.1 64bit 
MonitorMonitorKeyboardPower
Asus ROG Swift 27" 144hz with G-Sync Samsung 65" 7150  Logitech G510s Corsair AX1200 
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Thermaltake Core X9 custom painted Red and Black Logitech G602 Wireless Corsair Aluminum Core 2 sided  Bose Companion 5 
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Red X9
(20 items)
 
  
CPUMotherboardGraphicsGraphics
4790K @ 5ghz 1.350v 75c max load temps Asus Maximus VI Formula Evga Gtx Titan X @ 1500mhz / 7800mhz +112mv EK Acetal / Nickel / Nickel back plate 
RAMHard DriveHard DriveOptical Drive
Corsair Vengence Pro 32gig 2400mhz c11 red (4x8... 6x 256gig (1.5tb) in Raid 0 , OS / Gaming Drive 2 x Liteon 256gig (512gig) storage drives Asus Dvd-RW 
CoolingCoolingCoolingOS
2x 360mm Alphacool XT45 / 1x 480mm Alphacool Mo... EK X-Res 140 D5 vario Pump/Res combo + EK X-top... EK Supreme HF cpu / EK Acetal / Nickel with Nic... Windows 8.1 64bit 
MonitorMonitorKeyboardPower
Asus ROG Swift 27" 144hz with G-Sync Samsung 65" 7150  Logitech G510s Corsair AX1200 
CaseMouseMouse PadAudio
Thermaltake Core X9 custom painted Red and Black Logitech G602 Wireless Corsair Aluminum Core 2 sided  Bose Companion 5 
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