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Complete Overclocking Guide: Sandy Bridge & Ivy Bridge | *ASRock Edition* - Page 782

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Poll expired: Oct 17, 2012  
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post #7811 of 9531
Hi,

I have a question.

Currently I have my 2500k at 4Ghz
Asrock P67 Pro3 (B3)
Turbo Boost +0.004v
Offset Voltage -0,095V
LLC - Level 5

It is stable, cool and quiet. I wish to overclock to 4,2 however. From what I understand I will probably need to raise the offsetvoltage and set LLC to level 3 at least, right? I mean just the offset or turbo as well ?
post #7812 of 9531
Quote:
Originally Posted by rogigor View Post

Hi,

I have a question.

Currently I have my 2500k at 4Ghz
Asrock P67 Pro3 (B3)
Turbo Boost +0.004v
Offset Voltage -0,095V
LLC - Level 5

It is stable, cool and quiet. I wish to overclock to 4,2 however. From what I understand I will probably need to raise the offsetvoltage and set LLC to level 3 at least, right? I mean just the offset or turbo as well ?

Normally I would say turbo, but seeing as you are running such a high negative offset, you might consider adding some offset instead. Negative offset is great for low idle, but it can also cause idle stability issues that are real hard to diagnose. You can leave LLC at 5, for such a low overclock it wont make much difference, just play with the voltages.
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post #7813 of 9531
Quote:
Originally Posted by inedenimadam View Post

Normally I would say turbo, but seeing as you are running such a high negative offset, you might consider adding some offset instead. Negative offset is great for low idle, but it can also cause idle stability issues that are real hard to diagnose. You can leave LLC at 5, for such a low overclock it wont make much difference, just play with the voltages.

Ok, thx. But just to b sure that I got it right: offset voltage is mainly for iddle and turbo for overlocking ?
post #7814 of 9531
Quote:
Originally Posted by rogigor View Post

Quote:
Originally Posted by inedenimadam View Post

Normally I would say turbo, but seeing as you are running such a high negative offset, you might consider adding some offset instead. Negative offset is great for low idle, but it can also cause idle stability issues that are real hard to diagnose. You can leave LLC at 5, for such a low overclock it wont make much difference, just play with the voltages.

Ok, thx. But just to b sure that I got it right: offset voltage is mainly for iddle and turbo for overlocking ?

essentially, but offset move the whole voltage curve up/down across all multipliers, where turbo changes the shape of the curve because it only adds to the highest multiplier. There is nothing wrong with just using turbo, but I have a sneaky suspicion that if you go that route, you will end up needing to bump the offset a bit to stabilize the bottom end. You just have a REALLY big negative offset, and I dont see it staying stable once you start going higher with your clock.
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post #7815 of 9531
Quote:
Originally Posted by inedenimadam View Post

essentially, but offset move the whole voltage curve up/down across all multipliers, where turbo changes the shape of the curve because it only adds to the highest multiplier. There is nothing wrong with just using turbo, but I have a sneaky suspicion that if you go that route, you will end up needing to bump the offset a bit to stabilize the bottom end. You just have a REALLY big negative offset, and I dont see it staying stable once you start going higher with your clock.

It took me some time to reach that big negative offset and yet keep my CPU stable. I think I'll try to keep the offset as it is and just bump the turbo voltage a bit. If there's any sign of it being unstable then I'll try upping the offset. Thanks for your help
post #7816 of 9531
Oh btw I forgot to ask: is it better to do the final test of 1h prime or just rune like 10-15 intel burn tests? (at high stress level) ?
post #7817 of 9531
Quote:
Originally Posted by rogigor View Post

Oh btw I forgot to ask: is it better to do the final test of 1h prime or just rune like 10-15 intel burn tests? (at high stress level) ?

That is subjective, you may get varying answers depending on who you ask. The orginal topic starter, Kenny, has said that he only uses P95 for an hour, which is why he is not an official member of the club he started. For absolute, rock solid, as good as it gets stability, 24 hours of P95 custom blend with 80% RAM is suggested (Good for a work machine). Intel Burn Test will get your CPU hotter than most other tests, while testing stability at the same time (good for machines used for encoding/decoding audio/video). 1 hour P95 is good for a gaming machine, where a random crash or two wont bring your thesis paper or financial transactions to a halt.

Thats just my take on it. Keep your eye out for WHEA errors in event viewer, as they are a sign of minor instability that can go unnoticed because the system can recover without blue screening.

Happy overclocking,

Kyle
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RAMHard DriveHard DriveCooling
Corsair Vengeance CMK32GX4M4B3200C16W Crucial MX100 WD Blue 1TB EK Supremacy EVO 
CoolingCoolingCoolingOS
EK 480 PE EK 240 PE EK D5 Vario Windows 10 
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post #7818 of 9531
Well my pc will only be for gaming (or writing my thesis paper smile.gif ) but anyway I'm gonna test it with both IBT and Prime (for 1-2h). Thanks for your help!
post #7819 of 9531
Since your'e so kind to answer my question I do have one more. I decided to go for 4,5Ghz (since 200mhz isn't any improvement) so I'll set my Offset Voltage to +0,005V, LLC to 3 and work my way to set the best voltages. For such overclocking should I leave the offset voltage and bumb turbo when needed? BTW i've read somewhere that it's better to set fixed voltage instead of offset when going for 4,5 and more. Theoretically I know what's the difference but what do you think?

Btw maybe one of you guys have their settings for 2500K@4,5Ghz? smile.gif
Edited by rogigor - 2/17/14 at 2:32am
post #7820 of 9531
What is your idle and full load vcore in CPU-z?
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