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Need some advice overclocking a E6400 - Page 2

post #11 of 27
Thread Starter 
Quote:
Originally Posted by MADMAX22 View Post
keep it at 533, and try timings of 4-4-4-4
well when i pull it up in CPU-Z its showing
frequency- 262.2
16:15
4-4-4-12
    
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post #12 of 27
Thread Starter 
I try to manually set it to 4-4-4-4 and it still ends up 4-4-4-2. ANy thoughts?
CPu is oced to 2.24Ghz
CPU-Z is showing
2238Mhz
X8
Bus speed- 279.8
voltage- 1.376
    
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post #13 of 27
Thread Starter 
ALso if I go into my mobo BIOS it doesnt seem to like to to manual timings very accurately. IF I set it to manual adjust mem only it works great there but if I set it to do both cpu and mem it doesnt seem to want to keep the settings I put in.
    
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post #14 of 27
Thread Starter 
Quote:
Originally Posted by briank View Post
First, set your memory speed to "DDR-533", which will make your memory 1:1 with the CPU FSB. You can play with ratios other than 1:1 later, but to start OCing go with 1:1. Change the CPU FSB to overclock. Like someone else said, you can try +10MHz at a time, although it seems getting the FSB from 266MHz to 350MHz should almost expected with C2D's. 350MHz was the first I tried and it is perfectly stable. I even have to core voltage at 1.2V which is pretty low.
If you think you have the memory timings wrong, let the bios set the timings by SPD for now. Your RAM is rated for 333MHz. Maybe you should do that as a first step: change memory to timings by SPD, set Vmem to Auto, and set CPU FSB to 333MHz. If you can do that simple overclock, then mess with Vmem and Vcore to get the FSB higher.
Its showing the stock fsb at 1066 for the cpu.
    
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post #15 of 27
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anyone?
    
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post #16 of 27
Are you using CPU-Z or one of the ASUS tools to view FSB speed?

I don't have your motherboard so not sure if the BIOS is the same, but make sure AI Tuning is set to 'Manual' in the BIOS. Then the FSB should change when you edit it under 'JumperFree Configuration'

It should be as simply as that.
     
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post #17 of 27
Thread Starter 
Quote:
Originally Posted by briank View Post
Are you using CPU-Z or one of the ASUS tools to view FSB speed?

I don't have your motherboard so not sure if the BIOS is the same, but make sure AI Tuning is set to 'Manual' in the BIOS. Then the FSB should change when you edit it under 'JumperFree Configuration'

It should be as simply as that.
Using CPU-Z to see the settings in windows. It will let me change the FSB, thats not the issue but its not showing like your thinking. It will let me do it 1:1 with 533 on the ram and 1066 on the cpu and that is 2.13Ghz on the cpu. I gotta add the DDR which is 533 X 2 = 1066. My question was when I raise the Mhz on the cpu do I need to raise it with the ram as well or keep it 533? Which its supposed to be DDR 667 which should allow the cpu to atleast reach 1334 correct? Also the other thing Im seeing that isnt adding up is in CPU-Z its showing as a conroe but in core temp its showing as an allendale.

So in my BIOS it shows the ram in DDR and the CPU with both cores added together. A 1:1 would be showing on my end 533/1066 so to keep a 1:1 I would have to add 1 value to the ram and 2 for every one I add to ram to the CPU. So Do I need to try and maintain a 1:1 through the oc or just try the cpu oc first? I cant seem to get it stable with any overclock to save my life right now and any help would greatly be appreciated. Thanks
    
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post #18 of 27
Ok, the ASUS P5x BIOS is a little confusing. RAM and CPU frequency settings are not completely independent like you may be thinking. Both are linked to the setting under JumerFree Configuration called "CPU Frequency". When you change this setting, you are changing the base FSB frequency. Because the CPU FSB is quad data rate, its effective frequency is 4X the base FSB. Stock FSB is 266. 4X266 = 1066MHz which is what you are seeing stock.

Frequency of the RAM is determined by two things. The base FSB and the FSBRAM ratio. This ratio is set by the DRAM Frequency setting (even though it doesn't mention ratio in the name). The ASUS BIOS names the choices for DRAM Frequency stuff like DDR-533, DDR-800, etc. The DDR-533 setting is the 1:1 ratio. This is because 266x2 = 533 (RAM is double data rate). As you increase the CPU Frequency setting, the names of the DRAM settings will change accordingly. The 1:1 ratio will always be that 1st setting under Auto.

So basically do this under the Advanced menu in your bios.
1) Turn AI Tuning to Manual
2) Set DRAM Freq to DDR-533
3) Increase CPU Freq (by pressing the + key) to something higher than 266. I suggested 333MHz before since your ram is rated for that.
4) Save your settings. System will reboot and check to see that it overclocked.

If it crashes, you may have to increase Vcore or Memory voltage. If you have no clue to set these to, start with Vcore = 1.325V and Vmem = 2.0V. These may be higher than you need for that frequency, but they are certainly still safe voltages.

About the core codenames: E6300's and 6400's are Allendales. E6600's and above with the 4MB cache are Conroes.
     
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post #19 of 27
Not so many posts there posty pete mcposterson. You can edit your posts you know.
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post #20 of 27
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Quote:
Originally Posted by SlowFriend View Post
Not so many posts there posty pete mcposterson. You can edit your posts you know.
Sorry, didnt mean to anger the post gods.
    
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