Overclock.net › Forums › Intel › Intel CPUs › Explain the different voltages (vtt, etc...)
New Posts  All Forums:Forum Nav:

Explain the different voltages (vtt, etc...)

post #1 of 4
Thread Starter 
I have an E6600 overclocked to 3.6GHz (450 x 8) with 1.4250 vCore, 1.30 vMCH, 2.2 vDIMM (stock for my memory), all other voltages stock. I would like to attempt a successful "stable" 4GHz. I've seen people pump a lot of volts onto different areas like vTT, vMCH, vICH etc... Can someone decipher(explain) those voltages for me,and what is considered the max safe volts on each. Also, I left Virtualization, and execute disable bit "enabled." Will those really affect my overclock much. Should I definitely disable them? My temps right now are great. 29C idle, and 45C load.

Thanks
Abit IP35-Pro
(13 items)
 
  
CPUMotherboardGraphicsRAM
Core 2 Quad Q9650 Abit IP35-Pro v.18 Beta BIOS Sapphire Radeon x1950xt 256MB Patriot Viper 4GB(2GBx2) 4-4-4-Auto @ 800Mhz 
Hard DriveOptical DriveOSMonitor
WD Raptor 150GB; Seagate ES 320GB Pioneer 18x DVR-212DBK Windows XP Pro SP3 Samsung 19" Wide LCD 
KeyboardPowerCaseMouse
Microsoft Wireless Seasonic SS-650HT LIAN-LI PC-A05B Logitech G5 
Mouse Pad
N/A 
  hide details  
Reply
Abit IP35-Pro
(13 items)
 
  
CPUMotherboardGraphicsRAM
Core 2 Quad Q9650 Abit IP35-Pro v.18 Beta BIOS Sapphire Radeon x1950xt 256MB Patriot Viper 4GB(2GBx2) 4-4-4-Auto @ 800Mhz 
Hard DriveOptical DriveOSMonitor
WD Raptor 150GB; Seagate ES 320GB Pioneer 18x DVR-212DBK Windows XP Pro SP3 Samsung 19" Wide LCD 
KeyboardPowerCaseMouse
Microsoft Wireless Seasonic SS-650HT LIAN-LI PC-A05B Logitech G5 
Mouse Pad
N/A 
  hide details  
Reply
post #2 of 4
vTT is its the FSB voltage ...when unstable with high fsb adding some volts here can make things stable ..id say 1.45is max

vMCH is the NorthBridge as the fsb goes up you ll need to feed more volts so that the NB works properlly id say 1.5ish is the max on a case with decent airflow if higher values are used you should put a fan on it ..

vICH is the southBridge no need to add extra voltes here unless system is unstable due to extreme OCs anyhow max would be 2 noches above default

execute disable bit enabled is good once you are stable, this for security.

Quote:
Intel's Execute Disable Bit° functionality can help prevent certain classes of malicious buffer overflow attacks when combined with a supporting operating system.

Execute Disable Bit allows the processor to classify areas in memory by where application code can execute and where it cannot. When a malicious worm attempts to insert code in the buffer, the processor disables code execution, preventing damage and worm propagation.

Replacing older computers with Execute Disable Bit-enabled systems can halt worm attacks, reducing the need for virus-related repairs. In addition, Execute Disable Bit may eliminate the need for software patches aimed at buffer overflow attacks. By combining Execute Disable Bit with anti-virus, firewall, spyware removal, e-mail filtering software, and other network security measures, IT managers can free IT resources for other initiatives.
Virtualization is for those with multi OS systems ..so if you dont run anyother OSs on your system then this is usless ..
2011-2012
(17 items)
 
  
CPUMotherboardGraphicsRAM
i7 2600K (4.5Ghz/1.264v) Asus P8Z68-V PRO Gainward GTX680 Phantom G.skill ripjaws E3 2x4gb 1600Mhz C7 
Hard DriveOptical DriveCoolingOS
Crucial M4 256 +WD black 2TB Asus BC-12B1LT Noctua D-14 7x64 Pro N 
MonitorKeyboardPowerCase
Iiyama ProLite B2409HDS Steelseries 7G Seasonic X-750 Silverstone RV02-E 
MouseMouse PadAudioAudio
Razor Lachesis 3.5G Sphex Creative X-Fi Titanium HD Little Dot MK II  
Audio
Ultrasone Pro650 SE + AKG K-701 
  hide details  
Reply
2011-2012
(17 items)
 
  
CPUMotherboardGraphicsRAM
i7 2600K (4.5Ghz/1.264v) Asus P8Z68-V PRO Gainward GTX680 Phantom G.skill ripjaws E3 2x4gb 1600Mhz C7 
Hard DriveOptical DriveCoolingOS
Crucial M4 256 +WD black 2TB Asus BC-12B1LT Noctua D-14 7x64 Pro N 
MonitorKeyboardPowerCase
Iiyama ProLite B2409HDS Steelseries 7G Seasonic X-750 Silverstone RV02-E 
MouseMouse PadAudioAudio
Razor Lachesis 3.5G Sphex Creative X-Fi Titanium HD Little Dot MK II  
Audio
Ultrasone Pro650 SE + AKG K-701 
  hide details  
Reply
post #3 of 4
Thread Starter 
Your post was very helpful, thanks! In order to reach 450MHz FSB I raised the vMCH to 1.30v (Stock 1.25v). At that time I had no idea what vTT was, I only knew that a few people warned against raising it very much. Since I'm rock solid stable at 450 FSB, I should just be able to up my multi to 9 and be good to go.

Would it help at all to run maybe 500x8 instead of 450x9. I've tried 450x9 in the past, but I never could get the system stable. Does it ever help to increase vTT or vMCH to eek out a little more CPU Core clock after you've established a stable FSB?
Abit IP35-Pro
(13 items)
 
  
CPUMotherboardGraphicsRAM
Core 2 Quad Q9650 Abit IP35-Pro v.18 Beta BIOS Sapphire Radeon x1950xt 256MB Patriot Viper 4GB(2GBx2) 4-4-4-Auto @ 800Mhz 
Hard DriveOptical DriveOSMonitor
WD Raptor 150GB; Seagate ES 320GB Pioneer 18x DVR-212DBK Windows XP Pro SP3 Samsung 19" Wide LCD 
KeyboardPowerCaseMouse
Microsoft Wireless Seasonic SS-650HT LIAN-LI PC-A05B Logitech G5 
Mouse Pad
N/A 
  hide details  
Reply
Abit IP35-Pro
(13 items)
 
  
CPUMotherboardGraphicsRAM
Core 2 Quad Q9650 Abit IP35-Pro v.18 Beta BIOS Sapphire Radeon x1950xt 256MB Patriot Viper 4GB(2GBx2) 4-4-4-Auto @ 800Mhz 
Hard DriveOptical DriveOSMonitor
WD Raptor 150GB; Seagate ES 320GB Pioneer 18x DVR-212DBK Windows XP Pro SP3 Samsung 19" Wide LCD 
KeyboardPowerCaseMouse
Microsoft Wireless Seasonic SS-650HT LIAN-LI PC-A05B Logitech G5 
Mouse Pad
N/A 
  hide details  
Reply
post #4 of 4
Would it help at all to run maybe 500x8 instead of 450x9 :

i dont think so...cause logiclly 500*8 would put more strain on your mobo vs 450*9..so its harder to get things stable that way... but then ive never oced changing the multi.

and answer to the second question is yes ...personally when ocing i always set my Vtt at 1.42ish and mch at 1.5ish and once ive reached my objectives ..i start fine tuning ..ie set lower voltages , do stability tests and repeat this till i have the lowest operating voltages... i set vtt mch at those values just to be sure they arent the limiting factors.
.

btw thats a nice oc you got running!
2011-2012
(17 items)
 
  
CPUMotherboardGraphicsRAM
i7 2600K (4.5Ghz/1.264v) Asus P8Z68-V PRO Gainward GTX680 Phantom G.skill ripjaws E3 2x4gb 1600Mhz C7 
Hard DriveOptical DriveCoolingOS
Crucial M4 256 +WD black 2TB Asus BC-12B1LT Noctua D-14 7x64 Pro N 
MonitorKeyboardPowerCase
Iiyama ProLite B2409HDS Steelseries 7G Seasonic X-750 Silverstone RV02-E 
MouseMouse PadAudioAudio
Razor Lachesis 3.5G Sphex Creative X-Fi Titanium HD Little Dot MK II  
Audio
Ultrasone Pro650 SE + AKG K-701 
  hide details  
Reply
2011-2012
(17 items)
 
  
CPUMotherboardGraphicsRAM
i7 2600K (4.5Ghz/1.264v) Asus P8Z68-V PRO Gainward GTX680 Phantom G.skill ripjaws E3 2x4gb 1600Mhz C7 
Hard DriveOptical DriveCoolingOS
Crucial M4 256 +WD black 2TB Asus BC-12B1LT Noctua D-14 7x64 Pro N 
MonitorKeyboardPowerCase
Iiyama ProLite B2409HDS Steelseries 7G Seasonic X-750 Silverstone RV02-E 
MouseMouse PadAudioAudio
Razor Lachesis 3.5G Sphex Creative X-Fi Titanium HD Little Dot MK II  
Audio
Ultrasone Pro650 SE + AKG K-701 
  hide details  
Reply
New Posts  All Forums:Forum Nav:
  Return Home
  Back to Forum: Intel CPUs
Overclock.net › Forums › Intel › Intel CPUs › Explain the different voltages (vtt, etc...)