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Q8200 - Cant go past 3.1GHz / 443FSb on x38 ?? - Page 2

post #11 of 27
Quote:
Originally Posted by TheBirdman74;12270491 
Hi OCN, looks like I hit a wall, redface.gif I remember overclocking a Q8200 to 3.5GHz or more on a P45 mobo before, (I know p45 can hold a better oc.) But on the asus p5e3 d x38, it dropped 400 MHz, I cant seem to get it stable past 443FSB / 3.1GHz.

q8200 multiplier is 7. Adequate power and cooling has been taken care of. Any input and help to reach more would be greatly appreciated.smile.gif

If you fill out your system details here so it shows in your sig. It makes it easier for people to see what we're working with wink.gif
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I Like Smileys :)
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post #12 of 27
Thread Starter 
Quote:
Originally Posted by ACHILEE5;12270672 
If you fill out your system details here so it shows in your sig. It makes it easier for people to see what we're working with wink.gif

Good idea, I just filled in the details for the rig I am playing with thumbsupsmiley.png
post #13 of 27
Quote:
Originally Posted by TheBirdman74;12270713 
Good idea, I just filled in the details for the rig I am playing with thumbsupsmiley.png

Sweet smile.gif

I ain't all that good with overclocking redface.gif
And that's probably why I only run my Q9650 at 3.8GHz! smil3dbd4e4c2e742.gif
But loads on here are, and I hope you get it sorted thumb.gif

AC wink.gif
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post #14 of 27
Likely since you have DDR3, that it is not memory that is holding you back. To truly understand your setup do this.

First, find out your max FSB. To do this, start your overclock again from scratch. Use the lowest CPU multiplier, probably just 6. Increase your FSB in increments (10 - 20)mhz and keep voltages up to stablize the system, stress test to confirm that each FSB increase is stable enough. You don't have to have a stable 24/7 setup, you only want to find out what is likely your FSB limit on your motherboard.

Once you find your FSB limit, a point in which no amount of voltage increase or GTL ref voltage cannot stabilize, then this will isolate your problem to motherboard FSB limitation or CPU limitation.

I learned CPU limitation by using different motherboards. I had an E8200 that could not get pas 3.7ghz on NV 750i chipset. I then tried a P45 motherboard. On both motherboards, the CPU could not reach beyond 3.7ghz stable. I knew that the P45 could do near 500mhz FSB, since I also have an E8400 to confirm this. This was true of the 750i, it could do about 490mhz FSB, tested with the E8400.
Edited by flyin15sec - 2/5/11 at 7:57am
post #15 of 27
Quote:
Originally Posted by flyin15sec;12270918 
Likely since you have DDR3, that it is not memory that is holding you back. To truly understand your setup do this.

First, find out your max FSB. To do this, start your overclock again from scratch. Use the lowest CPU multiplier, probably just 6. Increase your FSB in increments (10 - 20)mhz and keep voltages up to stablize the system, stress test to confirm that each FSB increase is stable enough. You don't have to have a stable 24/7 setup, you only want to find out what is likely your FSB limit on your motherboard.

Once you find your FSB limit, a point in which no amount of voltage increase or GTL ref voltage cannot stabilize, then this will isolate your problem to motherboard FSB limitation or CPU limitation.

sounds like a good idea
    
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post #16 of 27
wow 3,5 Ghz - I'm gonna love my P45:D
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post #17 of 27
Thread Starter 
I think I have found it to be 449 being the max fsb this board would even boot at..

can any of you suggest how much volts should I use? i had it set at 1.375v but I reckon its too much? any suggested volts for these processors ?
post #18 of 27
Absolute MAX vcore, base in Intel's spec sheet is 1.45v, however you can go higher if you feel adventurous. Keep in mind, once you past that vcore, Intel makes no guaranteed that even if you return it back to a lower vcore, it may not function normally. Degradation may have already occur and you may be require to use even more vcore to run it normally.

Some folks have reported to run their CPUs beyond 1.45v for an extended amount of time without any issues, others had problem with just 1 suicide run beyond 1.45v. If money is not an issue, you certainly can try beyond 1.45v.
post #19 of 27
You will need to up MCH and CPU VTT voltages for higher FSBs.
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post #20 of 27
Thread Starter 
well I was actually thinking to lower it, since i thought its current settings of 1.3750 is a bit too much, I am still messing around v core , what would be a safe spot, that you would recommend ? 1.350v ?
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