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First Time Overclocking - i3 550

post #1 of 15
Thread Starter 
Ok so this is pretty much the first time that I tinker with speeds on the bios (Started around midway last month, but only minor until I received a new cooler yesterday, afterwards went insane raising the clock).

I've been reading and reading everything I could learn from other OCers' experiences to apply to my OC.

Bleh bleh bleh... Here's my current speeds:

The highest temperatures reached was 59c after running large fft for about 15 minutes. Overheat protecting is set to shutdown if it reaching 69c.

I hit the 4Ghz mark only yesterday (Now 4.1). And it seems stable.
Prime95 stable. If I lower the Vcore by just one step, prime fails. Lower 2 steps, BSOD.
Likewise if I raise the base clock by just one, Prime fails.

My question is if I want to go higher, do I simply keep raising base clock and voltage or is there something that I'm missing?

------
Power saving features are all on (I would preffer if they remain 'on')
Load-line calibration is 'off'
Every single setting that shows a number and is set to auto, I changed the 'auto' to the default value it shows when everything is stock' (Except Vcore). Since I don't want any 'auto' to fry something else on the board.
RAM clock is down to the nearest 1333Mhz that is supposed to be at. QPI the same.

My power supply is only 300-400w. But there's not many things attached to the board. 2 HDDs, integrated graphics, NO CD/DVD tray, one case fan and cpu fan. That's basically it.



Did I do good / bad / missed something / cake / pie?
Edited by Wnivre - 5/5/11 at 4:50am
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post #2 of 15
Thats not a bad oc. I got 4.2ghz 200x21 @ 1.280v.
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post #3 of 15
Thread Starter 
Mmmm well lower Vcore = Better temps. I'll try that setting.
Quote:
Originally Posted by TowelieTowel View Post
Thats not a bad oc. I got 4.2ghz 200x21 @ 1.280v.

*ADD*: Tried it. The bios screamed at me there's something wrong with the OC.


Dunno how you managed 4.2 at that voltage.
Edited by Wnivre - 5/3/11 at 7:55am
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post #4 of 15
Thread Starter 
I don't get it... How can people do 4.2Ghz with 1.28v and 4.5Ghz with 1.328v?????

I just tried 4.4Ghz at 1.4v. Prime fails very quickly. And after a few tries, the temps got to 67c, which seems strange since the 212+ should be enough to handle the i3 550. Luckily my overheat protection must have shut everything down because the comp turned off.

I don't understand what I'm doing wrong (Or not doing at all). Does it have anything to do with Hyperthreading? (Mines is on).


To any i3 owner that have achieved what I tried... Did you accomplish this with or without HT? As well as the numbers TowelieTowel say seem impossible for me to achieve on the same cpu. Towelie did you have HT on for those numbers?
Edited by Wnivre - 5/4/11 at 11:50am
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post #5 of 15
Power saving features increase the chance of OCing go wrong because it switches back and forth, putting more strain on the processor. I'd turn them off.

LLC (Load Line Calibration) is an anti-VDroop measure. I'd enable that as well.

I'd search for all the mobo/RAM default volts, and hardwire them on BIOS. AUTO settings are stupid. If i leave my RAM in AUTO it gets feed with 1.68v, and if i leave my IMC/VTT on AUTO, it gets 1.5v (max should be 1.4v), so you can actually fry something with AUTO volts.

I could hit 4.4 GHz with 1.425v, HT on. I do not need such horsepower, plus temps went through the roof (78-79c tops). I'm running 4 GHz @ 1.35v (175x24), and my max temps ate 70-72c on load (max absolute temps for clarkdales is 105c). Plus, i live in the tropic, so my ambient temps are way higher.
   
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post #6 of 15
Thread Starter 
Enabled LLC and actually lowered the voltage from 1.4 to 1.36something.
With HT off, managed 4.44 Ghz. So LLC on helps.

Quote:
Originally Posted by Starbomba View Post
Power saving features increase the chance of OCing go wrong because it switches back and forth, putting more strain on the processor. I'd turn them off.

LLC (Load Line Calibration) is an anti-VDroop measure. I'd enable that as well.

I'd search for all the mobo/RAM default volts, and hardwire them on BIOS. AUTO settings are stupid. If i leave my RAM in AUTO it gets feed with 1.68v, and if i leave my IMC/VTT on AUTO, it gets 1.5v (max should be 1.4v), so you can actually fry something with AUTO volts.

I could hit 4.4 GHz with 1.425v, HT on. I do not need such horsepower, plus temps went through the roof (78-79c tops). I'm running 4 GHz @ 1.35v (175x24), and my max temps ate 70-72c on load (max absolute temps for clarkdales is 105c). Plus, i live in the tropic, so my ambient temps are way higher.

Edited by Wnivre - 5/4/11 at 12:43pm
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post #7 of 15
Just depends on the chip. I can do 4.2 at 1.275 and now 4.4 with 1.32. Im going to try for 4.6 if the voltage is 1.35 or lower.
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post #8 of 15
Thread Starter 
Whenever I try to go over 4.44 Ghz, the display driver begins to crash over and over again. I'm using the integrated graphics.
Is that crashing unavoidable? Do I need to use a dedicated graphics card to fix it, or.

Is it safe to overclock the the integrated graphics clock and would that fix the crashing?




*ADD* Reading reading that OCing the integrated graphics is a bad idea... So then just how do I fix the crashing display driver?
Edited by Wnivre - 5/5/11 at 4:40am
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post #9 of 15
Quote:
Originally Posted by Wnivre View Post
Whenever I try to go over 4.44 Ghz, the display driver begins to crash over and over again. I'm using the integrated graphics.
Is that crashing unavoidable? Do I need to use a dedicated graphics card to fix it, or.

Is it safe to overclock the the integrated graphics clock and would that fix the crashing?




*ADD* Reading reading that OCing the integrated graphics is a bad idea... So then just how do I fix the crashing display driver?
You need to turn down the iGPU frequency, as it's tied to your BCLK, I believe. Just turn it down until it's close to 733. If you don't have that option, you need dedicated.

If you don't have a GPU, why overclock so much? Are you planning on grabbing one?
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post #10 of 15
Nice OC, got my i3 540 at 4GHz 1.23 volts. But you really should grab a dedicated gpu. It will allow to OC more.
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