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Overclock i7 950 Questions (VT-x)

post #1 of 3
Thread Starter 
Hello everyone!

I just went through a spree of computer upgrades (video card, RAM, another SSD) and I decided to overclock my CPU a little further.

I was running at 3.8 with my dual 5870s but the temperature that they were putting out was not so great (~55c at idle, ~88C at load). Now that I have a GTX 670 PE my idle temps for the GPU are ~29-32C with loads barely breaking 70C.

I am trying out 4.0GHz (19x211) right now and everything is running great as far as temps go. The CPU is idling around 38-40C.

The one thing that concerns me (as I'm not really experienced at overclocking) is that I had to bump up my QPI/DRAM voltage to 1.35 in order for the PC to see all 12GB at 1693. Anything less when at 4.0GHz only shows 8GB of RAM. I'm only concerned about this number because it is shown with a purple number in the BIOS. Is this a problem?

One last thing. I want to run a bunch of VMs from my PC but I have disabled the Intel VT-x for now as I thought I read somewhere that it is bad for overclocking. Is it OK to turn this back on or will it severely hinder my overclock?

Sorry for the fragmented post, I'm starving.
Edited by rpconrad - 3/19/13 at 7:35pm
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My PC
(17 items)
 
  
CPUMotherboardGraphicsRAM
i7 4790K MSI Z97-Gaming 7 (SLI) MSI GTX 980 4G 16GB G.Skill 2133MHz TridentX 
Hard DriveHard DriveHard DriveCooling
250GB Samsung 850 Pro 250 GB Samsung 840  1TB Western Digital Black Noctua NH-D14 
OSMonitorPowerCase
Windows 8.1 Professional 27" QNIX 1440P EVGA 850W Fractal R4 
Audio
ASUS Xonar STX 7.1 
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post #2 of 3
Quote:
Originally Posted by rpconrad View Post

Hello everyone!

I just went through a spree of computer upgrades (video card, RAM, another SSD) and I decided to overclock my CPU a little further.

I was running at 3.8 with my dual 5870s but the temperature that they were putting out was not so great (~55c at idle, ~88C at load). Now that I have a GTX 670 PE my idle temps for the GPU are ~29-32C with loads barely breaking 70C.

I am trying out 4.0GHz (19x211) right now and everything is running great as far as temps go. The CPU is idling around 38-40C.

The one thing that concerns me (as I'm not really experienced at overclocking) is that I had to bump up my QPI/DRAM voltage to 1.35 in order for the PC to see all 12GB at 1693. Anything less when at 4.0GHz only shows 8GB of RAM. I'm only concerned about this number because it is shown with a purple number in the BIOS. Is this a problem?

One last thing. I want to run a bunch of VMs from my PC but I have disabled the Intel VT-x for now as I thought I read somewhere that it is bad for overclocking. Is it OK to turn this back on or will it severely hinder my overclock?

Sorry for the fragmented post, I'm starving.

The difference in coloration with the numbers in the BIOS is just a bit of a warning. I have most settings in the purple/yellow, and you can even run most of them with the red without any harm to your computer. Your DRAM voltage seems perfectly fine, I have mine at 1.3V so that it recognizes all of my 24GB of RAM which is only running at about 1200MHz. Hardly notice a difference when running it at 1200MHz as opposed to 1333MHz (my RAM is about as old as my i7 960).

Your idle temperatures look fine, mine are roughly the same, just make sure that you test your computer under load for stability with programs like Prime95 and IntelBurnTest, and as long as you keep your CPU Core Voltage below 1.45V you'll be set.

Not sure about the last question, though, I don't have any experience running any VMs so you'd be better off taking someone else's word on that.
post #3 of 3
Thread Starter 
Thanks for the response. I'm going to try some burn tests this afternoon when I get off work. I was more concerned yesterday about testing my new video card with all of my old games. I put in some serious hours yesterday and my CPU never went above 61C, but then again usage was never over 65%.

All of the posts I've ready about being sure to disable Virtualization Tech when overclocking were from 2011 or earlier. I wonder if it still applies.
My PC
(17 items)
 
  
CPUMotherboardGraphicsRAM
i7 4790K MSI Z97-Gaming 7 (SLI) MSI GTX 980 4G 16GB G.Skill 2133MHz TridentX 
Hard DriveHard DriveHard DriveCooling
250GB Samsung 850 Pro 250 GB Samsung 840  1TB Western Digital Black Noctua NH-D14 
OSMonitorPowerCase
Windows 8.1 Professional 27" QNIX 1440P EVGA 850W Fractal R4 
Audio
ASUS Xonar STX 7.1 
  hide details  
Reply
My PC
(17 items)
 
  
CPUMotherboardGraphicsRAM
i7 4790K MSI Z97-Gaming 7 (SLI) MSI GTX 980 4G 16GB G.Skill 2133MHz TridentX 
Hard DriveHard DriveHard DriveCooling
250GB Samsung 850 Pro 250 GB Samsung 840  1TB Western Digital Black Noctua NH-D14 
OSMonitorPowerCase
Windows 8.1 Professional 27" QNIX 1440P EVGA 850W Fractal R4 
Audio
ASUS Xonar STX 7.1 
  hide details  
Reply
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