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Finally overclocking sandy bridge with a horrible experience

post #1 of 6
Thread Starter 
I've looked at several guides on overclock.net, tomshardware, and asus forums but have yet to easily overclock to 4.4ghz or 4.5ghz. My vcore was set as high as 1.36v with all the recommended settings by numerous guides, enabling and disabling c-states, bios updates, and etc.
I'm not sure what the problem could be but I think it has something to do with my ram perhaps? I googled if its possible to overclock with my current ram setup which is 2x4gb 1333mhz and 2x4gb 1600mhz but I couldn't find a clear answer. So I have tried X.M.P and its settings are 1600mhz, timings 9-9-9-27, and 1.65v. I couldn't find much information on Kingston 9905403-198.A00LF for some reason. So I was wondering if this had something to do with why my overclock adventure has been a failure. I tried auto timings, auto speed, and auto volts as well. To correctly overclock would it have to be 1333mhz, timing 9-9-9-24, and 1.5v? (increase as high as 1.65v?) I'm pretty much all out of ideas unless I give up the dream of overclocking all together. Do I just have a mediocre/bad 2600k? What exaclty am I doing wrong as oppose to following all the guides on overclocking sandy bridge processors and even looking up people that have the same exact setup as me cpu+mobo* I have read that its not good to have my computer running on 1.35v+ 24/7 so I really don't want to push it any further but if my cpu is bad does that mean if I want to achieve 4.4ghz/4.5ghz I have no choice? Did I just need to add more vcore in the end? Can anyone tell me if I got my ram information correct?

I passed p95 finally on 1.35v @4.5ghz but failed after an overnight test.
My temps shown while stress testing with coretemp was max temp 60-64c when it passed the 1hour mark, after that my computer had long restarted when i checked in the following morning.

Guides that I have followed(combination settings):
http://www.overclock.net/t/1198504/complete-overclocking-guide-sandy-bridge-ivy-bridge-asrock-edition
http://www.overclock.net/t/908782/sandy-bridge-overclocking-guide-ocn-members-only
http://club.myce.com/f184/easy-overclocking-guide-intel-sandy-bridge-ivy-bridge-cpus-329214/
http://www.overclock.net/t/910467/the-ultimate-sandy-bridge-oc-guide-p67a-ud7-performance-review
http://www.overclock.net/t/1251285/oc-sabertooth-z77-with-i7-2600k
https://hardforum.com/threads/official-asus-p8p67-series-overclocking-guide-and-information.1578110/
http://www.tomshardware.com/forum/265056-29-2600k-2500k-overclocking-guide

Computer Specs
Windows 10 64 bit
i7 - 2600k
asus z77 sabertooth - bios version 2104
noctua nh-d14
2x4gb Kingston 9905403-198.A00LF - slots 1 and 3
2x4gb 9905403-198.A00LF - slots 2 and 4
corsair hx750w
2tb wd caviar black
intel 730 240gb
ocz vertex 3 max iops 240gb
evga gtx 670 ftw

Thanks
post #2 of 6
Thread Starter 
I'm sorry I posted in the wrong section it seems, can the mods move it to the right section? my apologies.
post #3 of 6
I'll just toss this out there. Been running 1.48+ vcore for 5 years now on my 2500k. Not going to say it will last forever but many who say "don't run above 1.35 vcore" say that because they never have and are scared to, not because it will kill Sandy Bridge over night.

Keep temps in check, that is what is needed. Hitting 64*c isn't good already at 1.35vcore though, I will say that.

You're reading the right guides, just adjust them to meet your needs and don't be afraid to confirm even if you do end up rolling back to slower OC setting.

Example is find out how much vcore it does take to stabilize 4.5GHz, try 1.375vcore for instance, if it's stable lower to 1.365 etc tec, also mind the vdroop etc.

OC'ing Sandy is rather easy, but it doesn't do it itself and nothing in oc'ing is the same for everyone.

Welcome to OCN and Good Luck! thumb.gif
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The Sheep Skinner
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The Sheep Skinner
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960 EVO 500GB EK SE 240mm, Magicool slim 240mm EK Supreme HF CU Gold EKFC-Fury X WB 
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Win 10 Pro Acer XG270HU EVGA 750W  Evolv ITX 
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Naos7000 Corsair MM600 
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C2D E8400 DFI LT P35 Radeon HD4890 OCZ 2GB 800MHz 
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post #4 of 6
Thread Starter 
overclocking with my ram the way it and settings would be fine? To be honest I applied liquid ultra and have the nova nh-d14 fans essentially points towards the back fan on my case and my computer is in the basement. I don't know how I can get better temps than my setup. I'm just really worried about if my ram has anything to do with the high voltage and failure with stress testing. If I have to go above 1.35v for 4.4/GHz 4.5ghz I just want to achieve the lowest possible vcore. The ram issue is bugging me since playing with some settings prime95 didn't fail right away but had workers fail 7/8.
post #5 of 6
The best overclock I could do on a 2500k and 2600k was about 4.3/4.4GHz at 1.32v. So you might need to lower the Multiplier if you want to run on lower CPU voltage like around 1.3v or lower.
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post #6 of 6
Thread Starter 
so I started offset overclocking and at offset +0.010 it was successful 8hour prime 95 and now I'm running a test for offset +0.005 it's clocked at 4.2ghz, if this passes and I want to keep it at 4.2ghz do I start -0.005 and work myself down and if I want to say try to push 4.3ghz I start at +0.005 offset and go up? For some reason my cpu can't handle 4.4ghz offset +0.050 so that dream might be crushed.
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