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Could use a little help overclocking on my P8Z68.

post #1 of 4
Thread Starter 
I've been sitting on my 2600k for along time now and have been delaying OCing it and now's the time to get cracking. The only thing is, it's a little different than when I overclock my i7 870 and my i5 655k on my 1156 board. Pretty much as soon as I put the chip in my board (ASUS P8Z68 Deluxe) I just set teh multi to x40 and left the Vcore to whatever the BIOS decided, however I want a higher clock with a manual Vcore. I'm sure the voltages the BIOS sets aren't to modest and could possibly go lower.

There are a few settings that I'm not too sure of. One of which is the CPU Current Capability. It can be set from 100% to 140% I believe, and I don't really know what it should be set to at certain clock speeds/voltages. I'm pretty sure I understand what it does; It's the amount of current available to the CPU cores, and increasing the percentage will increase said amount of current which is needed for overclocks, right? If I'm wrong then correct me, but if I'm right then how high should I set this to? If it's too high for a lower clock speed will it be bad for my chip? The Phase control is another setting too. I see most people set it to Extreme allowing all the phases to power up at the same time, but I think I've seen people not go to that high of a setting.

My target speed that I want is ~4.5 for 24/7, and as high of a clock I can get (without an insanely high Vcore or temps), hopefully close to 5GHz, and run a few benches.

I've been reading a few Sandy Bridge and ASUS overclocking guides on this forum (mainly the one fromSin0822 http://www.overclock.net/intel-general/910467-ultimate-sandy-bridge-oc-guide-p67a.html) and I'll probably lurk in the ASUS forums a bit too, but can't find anything to really clear that question up for me and thought I'd come to the public for some help.
Ramona
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Ramona
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post #2 of 4
Quote:
Originally Posted by FreeWillzyx;14578921 
I've been sitting on my 2600k for along time now and have been delaying OCing it and now's the time to get cracking. The only thing is, it's a little different than when I overclock my i7 870 and my i5 655k on my 1156 board. Pretty much as soon as I put the chip in my board (ASUS P8Z68 Deluxe) I just set teh multi to x40 and left the Vcore to whatever the BIOS decided, however I want a higher clock with a manual Vcore. I'm sure the voltages the BIOS sets aren't to modest and could possibly go lower.

There are a few settings that I'm not too sure of. One of which is the CPU Current Capability. It can be set from 100% to 140% I believe, and I don't really know what it should be set to at certain clock speeds/voltages. I'm pretty sure I understand what it does; It's the amount of current available to the CPU cores, and increasing the percentage will increase said amount of current which is needed for overclocks, right? If I'm wrong then correct me, but if I'm right then how high should I set this to? If it's too high for a lower clock speed will it be bad for my chip?
According to the manual, "This item provides wider total power range for overclocking. A higher value brings a wider total power range and extends the overclocking frequency range simultaneously.".

However, it seems to me that 100% is fine even when trying to use a multiplier of x48 with a BCLK of 100.0 MHz. Up until 1 minute ago, I thought that I saw 140% being recommended somewhere, but I can't find where I saw it being recommended. I could have sworn I saw it in the video below, but I was wrong:

[ame]http://www.youtube.com/watch?v=3vBN-cBPs98[/ame]

I also thought I saw it in the guide below, but I was wrong:

http://hardforum.com/showthread.php?t=1578110


Then I even checked the guide below, but again it's not there either:

http://www.clunk.org.uk/forums/overclocking/39184-p67-sandy-bridge-overclocking-guide-beginners.html

They're even using 100% in their section entitled, "Overclocking to 4.7Ghz ~ 4.9GHz @ 1.35v"!

So, I don't know what caused me to start using 140%. In fact, I think I'm going to bring it down to 100% and then retest my stability.

Quote:
Originally Posted by FreeWillzyx;14578921 
The Phase control is another setting too. I see most people set it to Extreme allowing all the phases to power up at the same time, but I think I've seen people not go to that high of a setting.
According to Juan Jose at ASUS, using Extreme "will allow for scaling to 50+ multi without issues", and "ensures the highest level of current and overall power delivery for the board under heavy loading."

So, I don't know if it's only for using multipliers of 50x or more, but it seems that this could be the case. I mean, that guide on Clunk.org never talks about adjusting it! They even leave Duty Control set to T. Probe when shooting for 4.7 to 4.9GHz. So, I don't know anymore. redface.gif

Quote:
Originally Posted by FreeWillzyx;14578921 
My target speed that I want is ~4.5 for 24/7, and as high of a clock I can get (without an insanely high Vcore or temps), hopefully close to 5GHz, and run a few benches.

I've been reading a few Sandy Bridge and ASUS overclocking guides on this forum (mainly the one fromSin0822 http://www.overclock.net/intel-general/910467-ultimate-sandy-bridge-oc-guide-p67a.html) and I'll probably lurk in the ASUS forums a bit too, but can't find anything to really clear that question up for me and thought I'd come to the public for some help.
Based on what I found while creating my reply here, I think that all you need to do is increase the multiplier and the core voltage, especially for 4.5GHz.
It's a computer!
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CPUMotherboardGraphicsRAM
i5-2500K @ 4.5GHz (1.368-1.384V fixed voltage) ASUS P8P67 EVO B3 (UEFI ver. 1850) GTX 780 ASUS DirectCU II (1228 / 6300, 1.180V) G.SKILL Ripjaws X 8GB (2 x 4GB) 1866MHz, CL9 
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250 GB Samsung 840 EVO (C:\) 250 GB Samsung 840 EVO (D:\) 150 GB WD VelociRaptor Samsung SH-S243N 24x DVD Burner 
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It's a computer!
(19 items)
 
  
CPUMotherboardGraphicsRAM
i5-2500K @ 4.5GHz (1.368-1.384V fixed voltage) ASUS P8P67 EVO B3 (UEFI ver. 1850) GTX 780 ASUS DirectCU II (1228 / 6300, 1.180V) G.SKILL Ripjaws X 8GB (2 x 4GB) 1866MHz, CL9 
Hard DriveHard DriveHard DriveOptical Drive
250 GB Samsung 840 EVO (C:\) 250 GB Samsung 840 EVO (D:\) 150 GB WD VelociRaptor Samsung SH-S243N 24x DVD Burner 
Optical DriveCoolingOSMonitor
Samsung SH-S203N 20X DVD Burner Thermaltake Frio Win 7 Home Premium x64 SP1 Retail AOC G2460PG (24" 1920 x 1080 144Hz G-SYNC) 
KeyboardPowerCaseMouse
Filco Majestouch 104-key Cherry MX Blues w/NKRO Corsair HX650 (Bronze, ordered on 12-12-2009) CM 690 Intellimouse Optical (1.1A) 1000Hz polling rate 
Mouse PadAudioAudio
Basic, but premium round X-Fi Titanium HD Klipsch ProMedia 2.1 (with 16 AWG Monster Cable... 
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post #3 of 4
Thread Starter 
Quote:
Originally Posted by TwoCables;14585689 
According to the manual, "This item provides wider total power range for overclocking. A higher value brings a wider total power range and extends the overclocking frequency range simultaneously.".

However, it seems to me that 100% is fine even when trying to use a multiplier of x48 with a BCLK of 100.0 MHz. Up until 1 minute ago, I thought that I saw 140% being recommended somewhere, but I can't find where I saw it being recommended. I could have sworn I saw it in the video below, but I was wrong:

http://www.youtube.com/watch?v=3vBN-cBPs98

I also thought I saw it in the guide below, but I was wrong:

http://hardforum.com/showthread.php?t=1578110


Then I even checked the guide below, but again it's not there either:

http://www.clunk.org.uk/forums/overclocking/39184-p67-sandy-bridge-overclocking-guide-beginners.html

They're even using 100% in their section entitled, "Overclocking to 4.7Ghz ~ 4.9GHz @ 1.35v"!

So, I don't know what caused me to start using 140%. In fact, I think I'm going to bring it down to 100% and then retest my stability.



According to Juan Jose at ASUS, using Extreme "will allow for scaling to 50+ multi without issues", and "ensures the highest level of current and overall power delivery for the board under heavy loading."

So, I don't know if it's only for using multipliers of 50x or more, but it seems that this could be the case. I mean, that guide on Clunk.org never talks about adjusting it! They even leave Duty Control set to T. Probe when shooting for 4.7 to 4.9GHz. So, I don't know anymore. redface.gif



Based on what I found while creating my reply here, I think that all you need to do is increase the multiplier and the core voltage, especially for 4.5GHz.

Thanks man. I'm going for a high clock right now, so I'm definitely going to use this as one of my many guides!
Ramona
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Ramona
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64 GB Crucial M4(x2),500 GB Samsung Spinpoint Koolance 370 Windows 7 Home 64-bit 23" LG LED 
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post #4 of 4
Quote:
Originally Posted by FreeWillzyx;14687559 
Thanks man. I'm going for a high clock right now, so I'm definitely going to use this as one of my many guides!
Oh sweet! Crank it up! smile.gif
It's a computer!
(19 items)
 
  
CPUMotherboardGraphicsRAM
i5-2500K @ 4.5GHz (1.368-1.384V fixed voltage) ASUS P8P67 EVO B3 (UEFI ver. 1850) GTX 780 ASUS DirectCU II (1228 / 6300, 1.180V) G.SKILL Ripjaws X 8GB (2 x 4GB) 1866MHz, CL9 
Hard DriveHard DriveHard DriveOptical Drive
250 GB Samsung 840 EVO (C:\) 250 GB Samsung 840 EVO (D:\) 150 GB WD VelociRaptor Samsung SH-S243N 24x DVD Burner 
Optical DriveCoolingOSMonitor
Samsung SH-S203N 20X DVD Burner Thermaltake Frio Win 7 Home Premium x64 SP1 Retail AOC G2460PG (24" 1920 x 1080 144Hz G-SYNC) 
KeyboardPowerCaseMouse
Filco Majestouch 104-key Cherry MX Blues w/NKRO Corsair HX650 (Bronze, ordered on 12-12-2009) CM 690 Intellimouse Optical (1.1A) 1000Hz polling rate 
Mouse PadAudioAudio
Basic, but premium round X-Fi Titanium HD Klipsch ProMedia 2.1 (with 16 AWG Monster Cable... 
  hide details  
Reply
It's a computer!
(19 items)
 
  
CPUMotherboardGraphicsRAM
i5-2500K @ 4.5GHz (1.368-1.384V fixed voltage) ASUS P8P67 EVO B3 (UEFI ver. 1850) GTX 780 ASUS DirectCU II (1228 / 6300, 1.180V) G.SKILL Ripjaws X 8GB (2 x 4GB) 1866MHz, CL9 
Hard DriveHard DriveHard DriveOptical Drive
250 GB Samsung 840 EVO (C:\) 250 GB Samsung 840 EVO (D:\) 150 GB WD VelociRaptor Samsung SH-S243N 24x DVD Burner 
Optical DriveCoolingOSMonitor
Samsung SH-S203N 20X DVD Burner Thermaltake Frio Win 7 Home Premium x64 SP1 Retail AOC G2460PG (24" 1920 x 1080 144Hz G-SYNC) 
KeyboardPowerCaseMouse
Filco Majestouch 104-key Cherry MX Blues w/NKRO Corsair HX650 (Bronze, ordered on 12-12-2009) CM 690 Intellimouse Optical (1.1A) 1000Hz polling rate 
Mouse PadAudioAudio
Basic, but premium round X-Fi Titanium HD Klipsch ProMedia 2.1 (with 16 AWG Monster Cable... 
  hide details  
Reply
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