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4.5 GHz 3930K Overclocking Input/Help/Feedback

post #1 of 12
Thread Starter 
Hello,

I was hoping that I could get some feedback on my current setup for overclocking my 3930K to 4.5 GHz for daily use (VMware, Gamining, and regular web browsing).

This is my first attempt at overclocking.

Setup:
Case: Corsair 650D (stock front fan, stock rear fan, both set to high on the case controller)

Cooler: Corsair H100 (stock fans, pulling in cold air, set to medium speed)

Motherboard: ASUS Rampage IV Formula (BIOS Version 1005)

RAM: G.SKILL F3-17000CL9Q-16GBZH Ripjawz PC3-17000 16GB 4X4GB DDR3-2133 CL9-11-10-28 1.65V (2133 MHz enabled with X.M.P Enabled as per https://docs.google.com/document/pub?id=17VKzOB5CL5EtIelw5tGsj2CqjBk3O0OU5VPe6CUoFso&pli=1)

CPU: Intel Core i7-3930K C2 (Overclocked to 4.5GHz) - Using the stock Thermal Interface Material (TIM) from the H100 (all screws are as tight as I can make them)

Video Card: EVGA GeForce GTX 580 3GB

Hard Drive: Western Digital Caviar Black 2TB 64MB Cache 7200RPM

Operating System: Windows 7 Ultimate SP1 64-Bit

Temperatures and VCore
Temperatures (in degrees Celsius) are reported using Real Temp GT 3.70 (Core Temp and CPUID read the same)

Idle:
Idle Temperatures: 40-33-26-35-33-32
Asus Probe II – 31
Motherboard – 33

Idle VCore (in CPU-Z): 0.816V

Load:
Load Temperatures: 78-71-65-70-73-74
Asus Probe II – 70
Motherboard – 33

Load VCore (in CPU-Z): 1.336V, 1.344V, and 1.352V

BIOS Settings:
450

450

450

450

450

450

450

450

450

450

450

450

450

450

450

I would like any input and feedback that I can get. If you think I should change some settings, or if I should overclock it more, or anything else, please let me know!

I had to set the CPU Load-line Calibration to high from medium (is that safe for 24/7 use?), or else it would fail in LinX (it must need the higher voltage).

I would like to keep the temperatures down, but I am not sure how to get lower voltages that are stable.

Thanks!
post #2 of 12
Disable speedstep

Download prime 95 and keep running it until you are 24 hour stable to find out, if it fails add 0.005 voltage each time
Edited by Hellish - 3/10/12 at 3:07pm
350D RIVG 3930K
(25 items)
 
  
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Intel Core i7-3930k @ 4.3 GHz Asus Rampage IV Gene MSI GTX 680 Lightning Corsair Vengeance 16GB 1866MHz 
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Intel 520 Series Cherryville 480GB Western Digital Caviar Black 2TB Corsair H100i Windows 7 Ultimate 
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3x BenQ XL2420T (120hz Surround) + Ergotron LX ... Samsung PN59D550 59" 3D TV Filco Majestouch 2 Ninja Cherry MX Black Switch... Corsair AX 760i 
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Corsair 350D Logitech G9X + Razer Mouse Bungee Mionix Propus 380 Genelec 6010 SurroundPak Nearfield 5.1 Speaker ... 
AudioAudioAudioAudio
Sennheiser PC 300 Steelseries Siberia V2 Asus Xonar Essence One ASUS Xonar HDAV1.3 + Xonar H6 
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350D RIVG 3930K
(25 items)
 
  
CPUMotherboardGraphicsRAM
Intel Core i7-3930k @ 4.3 GHz Asus Rampage IV Gene MSI GTX 680 Lightning Corsair Vengeance 16GB 1866MHz 
Hard DriveHard DriveCoolingOS
Intel 520 Series Cherryville 480GB Western Digital Caviar Black 2TB Corsair H100i Windows 7 Ultimate 
MonitorMonitorKeyboardPower
3x BenQ XL2420T (120hz Surround) + Ergotron LX ... Samsung PN59D550 59" 3D TV Filco Majestouch 2 Ninja Cherry MX Black Switch... Corsair AX 760i 
CaseMouseMouse PadAudio
Corsair 350D Logitech G9X + Razer Mouse Bungee Mionix Propus 380 Genelec 6010 SurroundPak Nearfield 5.1 Speaker ... 
AudioAudioAudioAudio
Sennheiser PC 300 Steelseries Siberia V2 Asus Xonar Essence One ASUS Xonar HDAV1.3 + Xonar H6 
AudioAudioOtherOther
Beyerdynamic DT 990 600Ω Sennheiser PC 360 Herman Miller Embody + Envelop Lamptron FC5V2 
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post #3 of 12
Thread Starter 
SpeedStep allows the CPU to idle down, correct? But are you saying that if I disable it, that I will be able to run at a lower voltage (1.29 or so range), but the CPU would be at 100% speed (4.5) all of the time?

Is there any downside to this?
post #4 of 12
Quote:
Originally Posted by SoldierJAW View Post

SpeedStep allows the CPU to idle down, correct? But are you saying that if I disable it, that I will be able to run at a lower voltage (1.29 or so range), but the CPU would be at 100% speed (4.5) all of the time?
Is there any downside to this?

It will be at 4.5ghz all the time & speed-step supposedly causes instability, I have no idea what your chip can do, but I doubt 1.29 will be 24 hour stable at 4.5ghz.

there is a huge difference between posting / playing games at a low voltage and being stable for 24 hours in prime 95, I can validate 4.8ghz at 1.3 but it failed after 2 hours in prime at 1.38
Edited by Hellish - 3/10/12 at 3:12pm
350D RIVG 3930K
(25 items)
 
  
CPUMotherboardGraphicsRAM
Intel Core i7-3930k @ 4.3 GHz Asus Rampage IV Gene MSI GTX 680 Lightning Corsair Vengeance 16GB 1866MHz 
Hard DriveHard DriveCoolingOS
Intel 520 Series Cherryville 480GB Western Digital Caviar Black 2TB Corsair H100i Windows 7 Ultimate 
MonitorMonitorKeyboardPower
3x BenQ XL2420T (120hz Surround) + Ergotron LX ... Samsung PN59D550 59" 3D TV Filco Majestouch 2 Ninja Cherry MX Black Switch... Corsair AX 760i 
CaseMouseMouse PadAudio
Corsair 350D Logitech G9X + Razer Mouse Bungee Mionix Propus 380 Genelec 6010 SurroundPak Nearfield 5.1 Speaker ... 
AudioAudioAudioAudio
Sennheiser PC 300 Steelseries Siberia V2 Asus Xonar Essence One ASUS Xonar HDAV1.3 + Xonar H6 
AudioAudioOtherOther
Beyerdynamic DT 990 600Ω Sennheiser PC 360 Herman Miller Embody + Envelop Lamptron FC5V2 
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350D RIVG 3930K
(25 items)
 
  
CPUMotherboardGraphicsRAM
Intel Core i7-3930k @ 4.3 GHz Asus Rampage IV Gene MSI GTX 680 Lightning Corsair Vengeance 16GB 1866MHz 
Hard DriveHard DriveCoolingOS
Intel 520 Series Cherryville 480GB Western Digital Caviar Black 2TB Corsair H100i Windows 7 Ultimate 
MonitorMonitorKeyboardPower
3x BenQ XL2420T (120hz Surround) + Ergotron LX ... Samsung PN59D550 59" 3D TV Filco Majestouch 2 Ninja Cherry MX Black Switch... Corsair AX 760i 
CaseMouseMouse PadAudio
Corsair 350D Logitech G9X + Razer Mouse Bungee Mionix Propus 380 Genelec 6010 SurroundPak Nearfield 5.1 Speaker ... 
AudioAudioAudioAudio
Sennheiser PC 300 Steelseries Siberia V2 Asus Xonar Essence One ASUS Xonar HDAV1.3 + Xonar H6 
AudioAudioOtherOther
Beyerdynamic DT 990 600Ω Sennheiser PC 360 Herman Miller Embody + Envelop Lamptron FC5V2 
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post #5 of 12
Thread Starter 
Thanks for that, but I tried it, and I was still unable to get it stable at lower voltages.

Are my other settings ok / fine and safe for 24/7 usage?

Thanks!
post #6 of 12
Thread Starter 
Anyone else have some feedback for my overclock? Or did I post this in the wrong area of the forums?
post #7 of 12
Quote:
Originally Posted by SoldierJAW View Post

Anyone else have some feedback for my overclock? Or did I post this in the wrong area of the forums?

How long do you plan to keep your CPU for?

I highly advocate speedstep, it's been stable for me...lower fan rpms at browsing FTW. Yes that voltage is fine. I personally run 4.6395ghz (baseclock OC) with a 37 multiplier and 125mhz strap. 1.375 volts stable 48 hours prime 95. That's my CPU.

I've found using straps and increased baseclock amounts for lower voltage, though not many CPU's can do a 166mhz strap (mine can but it was more of a headache then it was worth tbh), and I've yet to see any NORMAL cpus do higher...this means you can usually run a lower voltage, albeit slightly.

I also highly recommend you look at this thread, http://www.overclock.net/t/1189242/sandy-bridge-e-overclocking-guide-walk-through-explanations-and-support-for-all-x79-overclockers I wish I'd seen it before I bought my CPU...
    
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post #8 of 12
Thread Starter 
Thanks for the reply.

I would like to keep it for about 5 years.

I too had heard that changing the CPU Strap could lead to lower voltages, but when I changed the CPU Strap to 125, and the BCLK Frequency to 125, it changed my RAM speed to above 2133 (something like 2333) and I had no option to select 2133 any more (until I lowered the BCLK Frequency), and the computer would not boot.

And yes, I had read that guide thumb.gif
post #9 of 12
I'm not all that familiar with over-clocking SB-E but I have been following a couple threads somewhat, I'll see what I can do to help.

From what I can tell the TJ max for the 3930k is 66.8, although I have seen lots of people who are comfortable getting temps a few degrees higher in stress testing.

When I bought my Q6600 I made the decision to use it over a dual core E8400. Just like you choose the 6c/12t 3930k over a quad you won't be able to get as high an overclock. However, even 4.2-4.3 is an impressive feat being a full gigahertz above stock.

So I would say this CPU should have no problem lasting 5+ years.

I will say this though, if you want to lower the temps by a 3-5 degrees I would look to buy 4 high static pressure fans and run your H100 in a push/pull set-up. With that you should be able keep the temps down to for your 4.5ghz overclock 24/7.

Also keep in mind that getting high overclocks usually means increasing the noise, but then again lots of the overclockers around here don't mind loud noise all that much.
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post #10 of 12
Thread Starter 
Thanks for the input.

I have been thinking about getting new fans for the H100 (hard decision, since I want them to work with the fan header on the H100, and be able to be controlled that way - I have heard about issues where fans will not spin up when connected to it), but I would only have room on my 650D for 2 fans (right now they pull in cold air from outside).

I was also looking at getting a better exhaust fan for the back of the 650D. The current 120mm fan does not have enough power to suck out the warm air (any recommendations for a good exhaust fan that is quiet?).
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