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a b K Overclocking
a c 87 V Motherboard
March 11, 2012 6:29:58 AM

Hello, I would olike to know if anybody has the same motherboard as me so you could tell me the exact settings to change to overclock to 4.6ghz i plan on running it 24-7 this way i have read many overclocking tutorials and seen hundred of youtube videos none with my mobo though and that makes it hard for me since my bios says different things or settings than the tutorials i have watched or read and i don't want to risk frying it i know some will say then don't overclock it but i believe there is such a thing as safe overclocking and i know four or five my friends who have been overclocking for years and they tell me it's hog wash that you'll lose half the life of your rig if you overclock they said if you are reasonable and know what your doing i don't need to worry they also told me for my setup 4.5ghz should be fine but i should test it with Prime95 for 2 hours before i leave it on any type of overclock 24-7 and they mentioned i need CPUID CPU-Z as you can tell by now i have no idea what i am doing so i would really appreciate any help from so0meone with same motherboard or can tell me exact setting to change for mine MB ASROCK|Z68 EXTREME3 GEN3 1155 R
CPU INTEL|CORE I5 2500K 3.3G 6M R
MEM 4Gx2|G.SKILL F3-12800CL9D-8GBXL CPU COOL CM| RR-V6GT-22PK-R1 RT

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a b K Overclocking
a b V Motherboard
March 11, 2012 6:56:46 PM

Okay, you cannot cook-book an overclock even with the exact same set-up. IT DOES NOT WORK THAT WAY!

Overclocking is where you push something past its stock point, which means that if you are lucky, you may hit 5Ghz, if you are not, you may get 4Ghz or below. Most Core i5 2500ks hit 4.5Ghz though, so you should be able to get that most likely.

I own that exact motherboard and CPU and have hit 4.5Ghz with a Corsair H60 water cooler. What cooler do you have, because a stock cooler isn't gonna cut warm butter when it comes to overclocking.

Things you should have: A good solid PSU (please link yours), good CPU cooling, good case, and you already have a solid board and CPU, so you are good there.

Your friends are correct, as long as you overclock smart, there shouldn't be much life reduction, and people who tell you otherwise don't know what they are talking about.

Now to the good stuff! :D 

Make sure your RAM is set to the proper timings, speed, and voltage to ensure stability to your system.

Disable Spread Spectrum, set SpeedStep to manual and set short term power duration to 140w, and long duration to 180w,

Enable PLL overvoltage (don't touch the PLL voltage), Load-Line Calibration Level 5, and then set the core ratio to manual, and the Vcore to offset.

Don't touch the BCLK (base clock).

Now, you will need to have a program called CPU-Z, another called Hardware monitor, and Prime95.

When in the BIOS and actually overclocking, you have to raise the multiplier 1 or 2 at a time until you get to 4Ghz, then only go one at a time and boot into windows. Once you get a crash, put the voltage up in .005v increments in offset. Once you have achieved 4.5Ghz, your target, stress test it with Prime95 and watch temps and voltages with hardware monitor.

I run 6 hours or more of Prime95, 2 hours doesn't prove stability! :pfff:  Sometimes 6 doesn't either, but in my experience, if you can get 6 hours, generally you are solid.

Here is an in-depth guide to overclocking with pretty much your same board. It is just the extreme4 version. http://www.tomshardware.com/forum/266189-29-sandy-bridg...

Max CPU voltage you should hit is 1.38v (I like 1.36v for ensured safety) for long CPU life and max temp should not go past 80C when testing, but not over 72.6C while gaming. I would suggest staying in the 60s for 24/7 use.

Good luck! :) 
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a b K Overclocking
a c 87 V Motherboard
March 18, 2012 8:34:32 AM

Hi and thanks for your reply here is the info about my rig


COOLER MASTER HAF 912 RC-912-KKN1 Black SECC/ ABS Plastic ATX Mid Tower Computer Case



Intel Core i5-2500K Sandy Bridge 3.3GHz (3.7GHz Turbo Boost) LGA 1155 95W Quad-Core Desktop Processor Intel HD Graphics 3000 BX80623I52500K


GIGABYTE GV-N560UD-1G GeForce GTX 560 Ti (Fermi) 1GB 256-bit GDDR5 PCI Express 2.0 x16 HDCP Ready SLI Support Video Card


ASRock Z68 Extreme3 Gen3 LGA 1155 Intel Z68 HDMI SATA 6Gb/s USB 3.0 ATX Intel Motherboard


Thermaltake TR2 TRX-650M 650W ATX 12V v2.3 / EPS 12V v2.91 Modular Active PFC Power Supply


HITACHI Deskstar 7K1000.D HDS721050DLE630 (0F13178) 500GB 7200 RPM 32MB Cache SATA 6.0Gb/s 3.5" Internal Hard Drive -Bare Drive - OEM


COOLER MASTER V6 GT RR-V6GT-22PK-R1 120mm DynaLoop CPU Cooler w/ Universal bracket & Dual Fan


G.SKILL Ripjaws X Series 8GB (2 x 4GB) 240-Pin DDR3 SDRAM DDR3 1600 (PC3 12800) Desktop Memory Model F3-12800CL9D-8GBXL


1 x SAMSUNG 22X DVD Burner 22X DVD+R 8X DVD+RW 8X DVD+R DL 22X DVD-R 6X DVD-RW 16X DVD-ROM 48X CD-R 24X CD-RW 48X CD-ROM SATA Model SH-222BB/BEBE - OEM

1 x Crucial M4 CT064M4SSD2 2.5" 64GB SATA III MLC Internal Solid State Drive (SSD)

I was able to overclock to 4.5ghz http://imageshack.us/photo/my-images/696/20120317154257... thank you for your help i ran in under linuX for 1 hour and did it in 70's high and i mis typed that was typo about the prime95 for two hours was typo i mean sorry lol they said twelve hours is what i should run it for before leaving anything overclocked 24-7 so i did that as well but i only ran prime95 for ten hours instead of twelve it never went above mid 70 highs i still want to go higher than 4.5ghz but my friends told me not a good idea unless i upgrade to watercooling they tell me 4.8ghz is best your going to do safe on air set up especially mine but they still wouldn't do it if they were me they said leave it at 4.5ghz to ensure stable and long life and they said anybody says i can overclock to 5.0ghz or higher 24-7 on air is dumb or otherwise is crazy or full of it or has awesome luck and that if i ask them in a few months if their rig is still running and they say yes their liars lol any truth to that i was told if i insist on overclocking to 5.0ghz or higher 24-7 at the very least upgrade to Rasa kit
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a b K Overclocking
a c 87 V Motherboard
March 18, 2012 8:51:02 AM

Best answer selected by bigcyco1.
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a b K Overclocking
a b V Motherboard
March 18, 2012 6:01:09 PM

bigcyco1 said:
Hi and thanks for your reply here is the info about my rig


COOLER MASTER HAF 912 RC-912-KKN1 Black SECC/ ABS Plastic ATX Mid Tower Computer Case



Intel Core i5-2500K Sandy Bridge 3.3GHz (3.7GHz Turbo Boost) LGA 1155 95W Quad-Core Desktop Processor Intel HD Graphics 3000 BX80623I52500K


GIGABYTE GV-N560UD-1G GeForce GTX 560 Ti (Fermi) 1GB 256-bit GDDR5 PCI Express 2.0 x16 HDCP Ready SLI Support Video Card


ASRock Z68 Extreme3 Gen3 LGA 1155 Intel Z68 HDMI SATA 6Gb/s USB 3.0 ATX Intel Motherboard


Thermaltake TR2 TRX-650M 650W ATX 12V v2.3 / EPS 12V v2.91 Modular Active PFC Power Supply


HITACHI Deskstar 7K1000.D HDS721050DLE630 (0F13178) 500GB 7200 RPM 32MB Cache SATA 6.0Gb/s 3.5" Internal Hard Drive -Bare Drive - OEM


COOLER MASTER V6 GT RR-V6GT-22PK-R1 120mm DynaLoop CPU Cooler w/ Universal bracket & Dual Fan


G.SKILL Ripjaws X Series 8GB (2 x 4GB) 240-Pin DDR3 SDRAM DDR3 1600 (PC3 12800) Desktop Memory Model F3-12800CL9D-8GBXL


1 x SAMSUNG 22X DVD Burner 22X DVD+R 8X DVD+RW 8X DVD+R DL 22X DVD-R 6X DVD-RW 16X DVD-ROM 48X CD-R 24X CD-RW 48X CD-ROM SATA Model SH-222BB/BEBE - OEM

1 x Crucial M4 CT064M4SSD2 2.5" 64GB SATA III MLC Internal Solid State Drive (SSD)

I was able to overclock to 4.5ghz http://imageshack.us/photo/my-images/696/20120317154257... thank you for your help i ran in under linuX for 1 hour and did it in 70's high and i mis typed that was typo about the prime95 for two hours was typo i mean sorry lol they said twelve hours is what i should run it for before leaving anything overclocked 24-7 so i did that as well but i only ran prime95 for ten hours instead of twelve it never went above mid 70 highs i still want to go higher than 4.5ghz but my friends told me not a good idea unless i upgrade to watercooling they tell me 4.8ghz is best your going to do safe on air set up especially mine but they still wouldn't do it if they were me they said leave it at 4.5ghz to ensure stable and long life and they said anybody says i can overclock to 5.0ghz or higher 24-7 on air is dumb or otherwise is crazy or full of it or has awesome luck and that if i ask them in a few months if their rig is still running and they say yes their liars lol any truth to that i was told if i insist on overclocking to 5.0ghz or higher 24-7 at the very least upgrade to Rasa kit

Yeah, 4.5Ghz is a good spot for air cooling because anything past 4.6Ghz will require a lot more voltage. I noticed that your Vcore was 1.384v and that is a bit for for my liking and especially for 4.5Ghz. Most Core i5 2500ks hit 4.5Ghz with 1.3-1.34v, and i think you could do that because you have decent cooling. Try using an offset voltage instead of auto or manual.

4.8Ghz will not be used in any gaming scenarios and 4.5Ghz when you have two massive GPUs. 5Ghz is for getting benchmark scores really high are just bragging, but it will cause life to degrade much faster. I would keep it at 4.5Ghz like you have it. Good job, just get the voltage down a bit. I would shoot for under 1.36v unless it is a voltage spike for a second.
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a b K Overclocking
a c 87 V Motherboard
March 23, 2012 1:46:09 PM

HostileDonut said:
Yeah, 4.5Ghz is a good spot for air cooling because anything past 4.6Ghz will require a lot more voltage. I noticed that your Vcore was 1.384v and that is a bit for for my liking and especially for 4.5Ghz. Most Core i5 2500ks hit 4.5Ghz with 1.3-1.34v, and i think you could do that because you have decent cooling. Try using an offset voltage instead of auto or manual.

4.8Ghz will not be used in any gaming scenarios and 4.5Ghz when you have two massive GPUs. 5Ghz is for getting benchmark scores really high are just bragging, but it will cause life to degrade much faster. I would keep it at 4.5Ghz like you have it. Good job, just get the voltage down a bit. I would shoot for under 1.36v unless it is a voltage spike for a second.
i did my settings like this http://www.youtube.com/watch?v=WoLR2YZrevQ what should i change to get it lower
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a b K Overclocking
a b V Motherboard
March 23, 2012 2:16:42 PM

Is your RAM at his timings?

Make sure they are at your timings. Such as 9-9-9-24 or something.

Change your offset voltage down to around +.035. That is what I did and it is stable, try it for yours.
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a b K Overclocking
a c 87 V Motherboard
March 24, 2012 8:13:17 AM

HostileDonut said:
Is your RAM at his timings?

Make sure they are at your timings. Such as 9-9-9-24 or something.

Change your offset voltage down to around +.035. That is what I did and it is stable, try it for yours.
Yes my ram settings are 9-9-9-24 here what i get at +.035 http://valid.canardpc.com/show_oc.php?id=2307097 and i ran prime for 4 hours so far and still going i want to let in run 10 hours to be sure i can leave it this way 24-7 lol do you think i can go 4,8 lmao
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a b K Overclocking
a b V Motherboard
March 24, 2012 4:33:37 PM

1.32v is pretty good for 4.5Ghz. You may be able to get lower though. I would give it a try.

4.8Ghz without a massive voltage increase will not happen.
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a b K Overclocking
a c 87 V Motherboard
March 25, 2012 5:59:37 AM

HostileDonut said:
1.32v is pretty good for 4.5Ghz. You may be able to get lower though. I would give it a try.

4.8Ghz without a massive voltage increase will not happen.

o.k. thanks for all your help i really appreciate it.P.S. Yeah i guess your right i managed to run it stable at this http://valid.canardpc.com/show_oc.php?id=2301991 but my voltage is to high right lol i will leave it at 4.5
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a b K Overclocking
a b V Motherboard
March 25, 2012 6:20:35 PM

If your max voltage was really 1.352v, that is actually safe! Just make sure the temps are good. Good job though! 4.5Ghz is enough for even a high-end dual card set up, so I would stick to 4.5Ghz.

I just got my H60 back and I am planning on putting in today! :)  Back to 4.5Ghz!
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a b K Overclocking
a c 87 V Motherboard
March 28, 2012 5:02:41 AM

HostileDonut said:
If your max voltage was really 1.352v, that is actually safe! Just make sure the temps are good. Good job though! 4.5Ghz is enough for even a high-end dual card set up, so I would stick to 4.5Ghz.

I just got my H60 back and I am planning on putting in today! :)  Back to 4.5Ghz!
Cool hope goes well for you.I am not liking my temps at 4.7ghz it gets as hot as 78 that's high don't you think also at 4.5ghz gets as hot as 74 my friend who overclocks allot and has been doing it for over 5 years told me try to keep my temps in the 50 or 60 range for 24-7 he said it's not good to have it running that hot 24-7 or for life span he said sure it safe but not smart overclocking so i was thinking maybe try bringing my overclock down to 4.2ghz would lower my temps do you think that would work i would upgrade to watercooling but it cost allot and i don't know how to install or maintain that sort of thing so i hesitate on going that route my friend that uses watercooling lives in different state then me he moved 4 months ago so i am chicken to try and install watercooling kit by myself lol he told me he could guide me through it over phone but i seriously doubt that and i have only built one rig in my whole life lol
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a b K Overclocking
a b V Motherboard
March 28, 2012 2:04:19 PM

Yeah, I would say go to 4.5 or 4.2Ghz. If you are getting 74C under testing and under 70C in games, you are pretty good.
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