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Newbie help needed - OC-ing i5-2500K on Asus P8Z68-Z mobo

post #1 of 9
Thread Starter 
System

i5-2500K
Asus P8Z68-V LGA
Corsair Vengeance 8GB (2 x 4GB) 240-Pin DDR3 1600 Desktop Memory (low profile; 1.35v 9-9-9-24)
Antec Kuhler H2O 620 Liquid Cooling System
OCZ Solid 3 120Gb (for Windows 7 Home Premium OS)
WD 1TB hdd for storage
Corair Enthusiast TX650M

Looking for stable settings to boost speed above 4.3Ghz which is where the auto OC maxes out. Can I get to 4.5, 4.6 or higher?

Being a newbie, any and all help is appreciated. EUFI screenshots would be VERY appreciated!
post #2 of 9
To start with, try and see how far stock settings get you.
So go and change the AI OC to manual and then change the turbo multi to 45 and then go to vcore and change to manual and enter 1.25 instead of auto.

reboot and then run realtemp and prime95 blend.
if it runs for 12+ hours without lock ups or BSOD your fine and can either stay at 1.25v or try 1.24 and retest.

this is the where the options are:



you need to change the by all cores box from auto to 45 and then scroll down until you see cpu voltage and then change from auto to 1.25.
Edited by nekromantik - 10/25/11 at 10:50am
The Rig
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CPUMotherboardGraphicsRAM
i5 2500K 4.8ghz - 1.33v Asus P8P67 Pro Rev 3.1 MSI GTX460 Hawk Talon Attack 950mhz core 8GB Kingston HyperX Genesis 1600 
Hard DriveOptical DriveOSMonitor
500GB WD Cavair Black, 1TB WD Cavair Green LG Lightscribe DVD Writer, LG Blu-Ray Drive Windows 7 Pro x64 LG 22" lcd monitor (1680x1050) 
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The Rig
(13 items)
 
  
CPUMotherboardGraphicsRAM
i5 2500K 4.8ghz - 1.33v Asus P8P67 Pro Rev 3.1 MSI GTX460 Hawk Talon Attack 950mhz core 8GB Kingston HyperX Genesis 1600 
Hard DriveOptical DriveOSMonitor
500GB WD Cavair Black, 1TB WD Cavair Green LG Lightscribe DVD Writer, LG Blu-Ray Drive Windows 7 Pro x64 LG 22" lcd monitor (1680x1050) 
KeyboardPowerCaseMouse
Logitech Wireless Corsair HX650 Cooler Master CM690 Logitech Wireless Laser 
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post #3 of 9
Thread Starter 
Since this is a brand new area for me, when I loaded the mobo drivers, I loaded them off the cd provided and have not checked to see if it is the latest version, which I presume I should do, as this might affect stability - Is that a correct statement?
post #4 of 9
Quote:
Originally Posted by garg_v View Post
Since this is a brand new area for me, when I loaded the mobo drivers, I loaded them off the cd provided and have not checked to see if it is the latest version, which I presume I should do, as this might affect stability - Is that a correct statement?
newer drivers are always recommended but usually its not a old driver that causes OCs to become unstable.
The Rig
(13 items)
 
  
CPUMotherboardGraphicsRAM
i5 2500K 4.8ghz - 1.33v Asus P8P67 Pro Rev 3.1 MSI GTX460 Hawk Talon Attack 950mhz core 8GB Kingston HyperX Genesis 1600 
Hard DriveOptical DriveOSMonitor
500GB WD Cavair Black, 1TB WD Cavair Green LG Lightscribe DVD Writer, LG Blu-Ray Drive Windows 7 Pro x64 LG 22" lcd monitor (1680x1050) 
KeyboardPowerCaseMouse
Logitech Wireless Corsair HX650 Cooler Master CM690 Logitech Wireless Laser 
  hide details  
Reply
The Rig
(13 items)
 
  
CPUMotherboardGraphicsRAM
i5 2500K 4.8ghz - 1.33v Asus P8P67 Pro Rev 3.1 MSI GTX460 Hawk Talon Attack 950mhz core 8GB Kingston HyperX Genesis 1600 
Hard DriveOptical DriveOSMonitor
500GB WD Cavair Black, 1TB WD Cavair Green LG Lightscribe DVD Writer, LG Blu-Ray Drive Windows 7 Pro x64 LG 22" lcd monitor (1680x1050) 
KeyboardPowerCaseMouse
Logitech Wireless Corsair HX650 Cooler Master CM690 Logitech Wireless Laser 
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post #5 of 9
double post delete please
The Rig
(13 items)
 
  
CPUMotherboardGraphicsRAM
i5 2500K 4.8ghz - 1.33v Asus P8P67 Pro Rev 3.1 MSI GTX460 Hawk Talon Attack 950mhz core 8GB Kingston HyperX Genesis 1600 
Hard DriveOptical DriveOSMonitor
500GB WD Cavair Black, 1TB WD Cavair Green LG Lightscribe DVD Writer, LG Blu-Ray Drive Windows 7 Pro x64 LG 22" lcd monitor (1680x1050) 
KeyboardPowerCaseMouse
Logitech Wireless Corsair HX650 Cooler Master CM690 Logitech Wireless Laser 
  hide details  
Reply
The Rig
(13 items)
 
  
CPUMotherboardGraphicsRAM
i5 2500K 4.8ghz - 1.33v Asus P8P67 Pro Rev 3.1 MSI GTX460 Hawk Talon Attack 950mhz core 8GB Kingston HyperX Genesis 1600 
Hard DriveOptical DriveOSMonitor
500GB WD Cavair Black, 1TB WD Cavair Green LG Lightscribe DVD Writer, LG Blu-Ray Drive Windows 7 Pro x64 LG 22" lcd monitor (1680x1050) 
KeyboardPowerCaseMouse
Logitech Wireless Corsair HX650 Cooler Master CM690 Logitech Wireless Laser 
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Reply
post #6 of 9
Quote:
Originally Posted by garg_v View Post
Since this is a brand new area for me, when I loaded the mobo drivers, I loaded them off the cd provided and have not checked to see if it is the latest version, which I presume I should do, as this might affect stability - Is that a correct statement?
You can download new drivers from Asus site.
http://www.asus.com/Motherboards/Int...55/P8Z68V_PRO/
If you installed them from CD, I don't think you will have problems either.

For 4.5GHz its very easy.
I use Internal PLL voltage 1.65V
LLC on Ultra
CPU Overclock Capabilities 130%
Vcore 1.31V (my cpu needs it for 4.5GHz your could work with lower voltage)
Sandy love
(13 items)
 
  
CPUMotherboardGraphicsRAM
2500K 4.5GHz 1.32V Asus P8P67 PRO 3.0 Sapphire 5850 Hd 900/1250 Mushkin Blackline 2x4GB 1.35V 
Hard DriveOptical DrivePowerCase
Crucial M4 64Gb(boot), Samsung Spinpoint F3 1TB LG Corsair TX850W V2 Haf 932 Advanced 
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Sandy love
(13 items)
 
  
CPUMotherboardGraphicsRAM
2500K 4.5GHz 1.32V Asus P8P67 PRO 3.0 Sapphire 5850 Hd 900/1250 Mushkin Blackline 2x4GB 1.35V 
Hard DriveOptical DrivePowerCase
Crucial M4 64Gb(boot), Samsung Spinpoint F3 1TB LG Corsair TX850W V2 Haf 932 Advanced 
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post #7 of 9
Thread Starter 
Thanks for the prompt replies. I will update the BIOS from the Asus site as well as shoot for 4.5Ghz as suggested. One of the things I've noticed is that the mobo automatically had the chip at idle (around 1.6Ghz) and as soon as I ran P95 (no changes to stock settings), it boosted to just under 4.3Ghz and was stable for over 24hrs (not a surprise as it should be 100% stable). So, the question becomes, is the .2Ghz improvement noticeable and worth the possibility that it might become unstable at some point?
post #8 of 9
Quote:
Originally Posted by garg_v View Post
Thanks for the prompt replies. I will update the BIOS from the Asus site as well as shoot for 4.5Ghz as suggested. One of the things I've noticed is that the mobo automatically had the chip at idle (around 1.6Ghz) and as soon as I ran P95 (no changes to stock settings), it boosted to just under 4.3Ghz and was stable for over 24hrs (not a surprise as it should be 100% stable). So, the question becomes, is the .2Ghz improvement noticeable and worth the possibility that it might become unstable at some point?
You won't really notice the difference between 3.8GHz and 5GHz in games.
As the GPU's hit their limits.
But you will notice differences in benchmark tools.
Sandy love
(13 items)
 
  
CPUMotherboardGraphicsRAM
2500K 4.5GHz 1.32V Asus P8P67 PRO 3.0 Sapphire 5850 Hd 900/1250 Mushkin Blackline 2x4GB 1.35V 
Hard DriveOptical DrivePowerCase
Crucial M4 64Gb(boot), Samsung Spinpoint F3 1TB LG Corsair TX850W V2 Haf 932 Advanced 
  hide details  
Reply
Sandy love
(13 items)
 
  
CPUMotherboardGraphicsRAM
2500K 4.5GHz 1.32V Asus P8P67 PRO 3.0 Sapphire 5850 Hd 900/1250 Mushkin Blackline 2x4GB 1.35V 
Hard DriveOptical DrivePowerCase
Crucial M4 64Gb(boot), Samsung Spinpoint F3 1TB LG Corsair TX850W V2 Haf 932 Advanced 
  hide details  
Reply
post #9 of 9
Thread Starter 
Shame, thanks for the feedback info as I was not really aware that it would not be a noticeable improvement for gaming which is why I built the unit for a good friend. I wasn't sure if I should just leave well enough alone and just go with the auto / stock settings provided by the mobo, which seems pretty damn good @ ~ 4.3Ghz.
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