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Help on fine tuning 2500k Asus P8P67 4.5 GHz OC

post #1 of 13
Thread Starter 
Hello all. I just got to 4.5 stable (for about 7.5 hrs anyway, stopped to look into changes).

I used this video step by step:

http://www.youtube.com/watch?v=WMZoWOpry40

I'm looking for suggestions on this OC method. I read several guides and watched several vids, all point in slightly different directions. My goal for now is to be in the 4.5 ~ 4.8 range and be at the lowest possible voltages and temps... (as "safe" as possible with a mild to moderate OC). I'd also like to keep my computer as quiet as possible so I'm not sure if disabling fan control and runing them full out as suggested in this guide is really ideal.

Please provide suggestions on voltages etc. which may vary from the video, thanks! Screenie below:

338
post #2 of 13
Your vcore looks high for only 4.5. you should try leaving all your settings as is and bump your multi one point at a time till it no longer boots. Go back one and try running p95. You should end up around 4.7 or 4.8 with that vcore. If you boot at one of those speeds adjust your vcore up .01v and try again.
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post #3 of 13
How did you end up at that voltage on the cpu. That is really high for a 4.5ghz. I use 1.392v under load for 5ghz 15hrs prime blend stable. My chip is pretty good, but 1.368v does seem really high for 4.5ghz. You can also start dropping the Vcore and running prime blend. I would try 1.325v, then 1.300v, 1.275v, until it fails prime then work up smaller notches at a time and find stability.
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post #4 of 13
Thread Starter 
I left my mult at 45 and bumped my vcore down to 1.33, core 4 had an error after about 2 hours. Max temp under 70. I'm really starting to wonder if the other settings suggested in the youtube video are correct.. or maybe my chip needs more vcore.

I may try going back to 1.35 and upping my multi as no_safe_HAVEN mentions.
post #5 of 13
Thread Starter 
Quote:
Originally Posted by Hambone07si View Post

How did you end up at that voltage on the cpu. That is really high for a 4.5ghz. I use 1.392v under load for 5ghz 15hrs prime blend stable. My chip is pretty good, but 1.368v does seem really high for 4.5ghz. You can also start dropping the Vcore and running prime blend. I would try 1.325v, then 1.300v, 1.275v, until it fails prime then work up smaller notches at a time and find stability.

Like I said, I followed the video step by step. When I tried lowering to vcore to 1.33v I had an error on core 4 after 2 hours.
Edited by uniwarking - 11/18/11 at 8:02pm
post #6 of 13
Thread Starter 
Quote:
Originally Posted by no_safe_HAVEN View Post

Your vcore looks high for only 4.5. you should try leaving all your settings as is and bump your multi one point at a time till it no longer boots. Go back one and try running p95. You should end up around 4.7 or 4.8 with that vcore. If you boot at one of those speeds adjust your vcore up .01v and try again.

47 multi crashed going into windows... 46 appears to be working after a few minutes of blend prime95 (we'll see what happens). Is there something this video is telling me in the settings that is incorrect... or is my chip just a little power hungry?
post #7 of 13
honestly i didnt have the time to watch the video. Let me scan it really fast and see if i catch anything. In the mean time take a look through this guide.
http://www.overclock.net/t/910467/the-ultimate-sandy-bridge-oc-guide-p67a-ud7-performance-review
and this one.
http://www.overclock.net/t/963798/msi-p67a-gd55-review-and-oc-guide/0_40

Neither are your board but the fundamentals are about the same.

Edit: I didnt see anything out of the ordinary other than the PLL that he set seemed really high for a 4.5 OC. Try backing it down to 1.75.
Edited by no_safe_HAVEN - 11/18/11 at 9:24pm
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post #8 of 13
Thread Starter 
46 multi crashed after 4 hours... back to 45 I guess for now
post #9 of 13
You have 4gig sticks of ram. You should try using 1.125v on VCCIO. DO NOT TOUCH VCCSA AT ALL. Try using 1.700v on Cpu PLL. I have found that to be the best for me. Set your Vcore PWM mode to Extreme, VRM fixed mode to 350, VCore Over Current Protection to 130%(i use this for 5ghz). Try some of these settings and see what happens booting at a higher multi.

You don't have to run stress, but you can try these settings and I bet you can boot up to 48-50 using 1.400v. I'm not saying it will be stable, but at least you will see the light on the other end. You will need Cpu PLL overvoltage ENABLED too.

I'll look at that vid and see if I can see anything as well.

EDIT: Ok after watching only 10sec's of the vid, he is using only 4gigs of ram 2x2. He wouldn't need any VCCIO voltage for those sticks as you probably would. Still watching.

EDIT2: Don't listen to this guy. He's telling you to adjust VCCSA to 1.000v. No one will recommend that. I have taken my chip to 5.4ghz and have not needed to touch that. Put that back on auto if you changed it.

EDIT3: WOW, this guy is way wrong!! You do not Disable Cpu Spread Spectrum unless your adjusting the BLCK from 100.0, If your going to raise your Blck to say 102.0 , then you disable that. Other wise, leave on Auto or Enabled. Reason your having a hard time is because you watched this VIDEO. doh.gif
Edited by Hambone07si - 11/19/11 at 6:12am
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post #10 of 13
Thread Starter 
I just got through with a 12hr stress test @ 4.5 Ghz with no errors!

Here are my current BIOS settings:

Run 1
4.5GHz
AI Tweaker
AI Overclock TunerManual
BCLK100
Turbo RatioBy all cores
Internal PLL OvervoltageEnabled
Memory FrequencyDDR3-1600

Load Line CalibrationExtreme
VRM FrequencyAuto
Phase ControlExtreme
Duty ControlExtreme
CPU Current Capability100%

CPU VoltageManual Mode
CPU Manual Voltage1.35
DRAM Voltage1.5
VCCSA Voltage1
VCCIO Voltage1.1
CPU PLL Voltage1.9
PCH VoltageAuto
CPU Spread SpectrumDisabled

Advanced Tab
CPU RatioAuto
Intel Thermal MonitorEnabled
Active Processor CoresAll
Limit CPUID MaxDisabled
Execute Disabled BitEnabled
Intel VirtualizationDisabled
SpeedstepEnabled
Turbo ModeEnabled
CPU C1EDisabled
CPU C3 ReportDisabled
CPU C6 ReportDisabled
Quote:
Originally Posted by Hambone07si View Post

You have 4gig sticks of ram. You should try using 1.125v on VCCIO. DO NOT TOUCH VCCSA AT ALL. Try using 1.700v on Cpu PLL. I have found that to be the best for me. Set your Vcore PWM mode to Extreme, VRM fixed mode to 350, VCore Over Current Protection to 130%(i use this for 5ghz). Try some of these settings and see what happens booting at a higher multi.
You don't have to run stress, but you can try these settings and I bet you can boot up to 48-50 using 1.400v. I'm not saying it will be stable, but at least you will see the light on the other end. You will need Cpu PLL overvoltage ENABLED too.
I'll look at that vid and see if I can see anything as well.
EDIT: Ok after watching only 10sec's of the vid, he is using only 4gigs of ram 2x2. He wouldn't need any VCCIO voltage for those sticks as you probably would. Still watching.
EDIT2: Don't listen to this guy. He's telling you to adjust VCCSA to 1.000v. No one will recommend that. I have taken my chip to 5.4ghz and have not needed to touch that. Put that back on auto if you changed it.
EDIT3: WOW, this guy is way wrong!! You do not Disable Cpu Spread Spectrum unless your adjusting the BLCK from 100.0, If your going to raise your Blck to say 102.0 , then you disable that. Other wise, leave on Auto or Enabled. Reason your having a hard time is because you watched this VIDEO. doh.gif


Excuse my ignorance, but can you explain some of the details behind your suggestions? Does the VCCIO need to be higher because of the larger capacity RAM? Please also provide reasons for the other suggestions so I can learn a bit more. Thanks!
Edited by uniwarking - 11/19/11 at 6:10pm
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