i2500k help with OC

seithan · Jun 18, 2014

Hello, im trying to oc my cpu higher than 4k but im either running into stability issues or it just runs too hot.

Im using a hyper212 p\p and an Asus Maximus IV GenZ.

Could you tell me which exacts settings to change from auto and what settings to tinker with?

Many thanks!

Alpha3031 · Jun 18, 2014

Really you only need to control two settings
vCore (not to exceed 1.3 V for safety)
Clock multiplier (you should be able to get at least 45 on a good cooler)
make sure temps never exceed 80 degC after stress testing.

saint19 · Jun 18, 2014

What temps do you have at this moment at idle and load?

What PSU do you have?

Tradesman1 · Jun 18, 2014

Try setting the vCore to 1.25 and then OC as high as you can or want to, then see if you can lower the voltage while maintaining stability

seithan · Jun 19, 2014

saint19 :

im about 65c running wildstar. Unfortunatelly i have a high ambience of about 32c near the PC box.

I know that there are settings enabled on my mobo that even when i set my core to a specific value, it will rise up alot more than that when its under load.

4Ryan6 · Jun 19, 2014

seithan :

Sounds like some auto voltage going on, manually controlling your voltage can seriously affect load temperature have you studied any overclocking guides to learn what to do?

Stability is simply achieved by supplying the proper amount of voltage to stabilize the chosen multiplier, but with the 2500K being so versatile of an overclocker you need to understand how you want to approach overclocking it.

Do you want to overclock with all the Intel CPU BIOS features enabled, or some of them, or all of them disabled, that's why studying guides will help you understand at least how you want to approach the overclock.

Overclocking to a set goal speed is trial and error testing until you arrive at a 100% stable overclock, it is not a quick handout of settings as all hardware overclocks differently, what works for Johnny does not work for Joe.

You need to invest the time, study overclocking your CPU, and then Do IT.

seithan · Jun 19, 2014

Actually i get 1.361v max just @ 3.7k! Help me fix my voltage please!

seithan · Jun 19, 2014

4Ryan6 :

You are 100% right.

Ive read quite a bit on O/C but still im not able to do it right, simply because i cant get down to which settings are where, and which values to start up with.

I also understand that i'd like two clocks active, one as an 1.6ghz when im on desktop idleing/browsing and one while gaming, reaching a preset clock. Thus i need to voltages.

Ive read that there are offsets which smooth out the change between different voltages and also various automatic settings that let you get extra voltage juice when the system needs it.

Anyone with a Maximus IV or a similar mobo to help me get the settings (the main ones) down once and for all?

Thanks again for the time you took reading this.

saint19 · Jun 19, 2014

I have experience with that motherboard, excellent by the way.

Enter to your BIOS and in the main menu go to voltage option, change it to manual and set the multiplier frequency to x36. Disable power options like C1E and Spread Spectrum.

If you are not sure, just take a picture of the BIOS and share it with us.

seithan · Jun 19, 2014

Took a few screens of various BIOS menu items and link them here.

Was also trying out BF3 after a long winter break, and the game is really frying my CPU. I was @ 70c on both CPU and GPU!

I dont know whats happening, probably bogged down CPU heatsink full of dust, i never been that high on temperatures.

seithan · Jun 20, 2014

Overheating issue fixed, too much dust and was removed, im back to nominal.

Still need your expertise Saint19!

Alpha3031 · Jun 20, 2014

Have you installed stress tester like prime95?
Remember to run it at least 10 mins after changing settings.
70 [sup]o[/sup]C is fine if you just used it.

seithan · Jun 20, 2014

Could you please gimme specific settings to use with the Maximus IV? At set clocks , like 3.7Ghz / 4Ghz/ 4.2Ghz/ 4.4Ghz??? Would appreciate that.

Alpha3031 · Jun 20, 2014

No, every chip is different, some are easier to overclock, some are harder, some need more voltage, some run cooler. So no, it's just not possible to give you fixed OC settings and expect them to work.

What you need to do is just use the multiplier to OC, stress test, if it crashes increase voltage, if it doesn't OC more or decrease voltage.

4Ryan6 · Jun 21, 2014

seithan :

I can share the fixed voltages I ran with my 2500K that I recorded close to what you are asking for, I doubt they will work for you because my 2500K was one of the earliest releases, but they should get you in the ballpark.
Note: These were single GPU settings usually dual GPUs take a couple higher voltage bumps.
43x - 1.265v
44x - 1.295v
45x - 1.325v

Also you can lower your temperature and possibly gain better stability by not overclocking the CPU memory controller as that's what you are doing running it at 1600mhz, the Sandy Bridge was designed to run at 1066mhz or 1333mhz you may very well be causing some instability and heat problems right there.

Additionally there are more overclocking related features under the Advanced Tab under CPU configuration?

You don't show any pictures of your settings relating to that?

What are your exact memory specs Brand and model#s?

You could try manually setting your memory to 1333mhz at 7,7,7,21 2N at 1.50v and see how much your temperature drops.

http://www.tomshardware.com/answers...overclocking-cpus-die-memory-controllers.html

4Ryan6 · Jun 21, 2014

The most important part of overclocking is understanding what you are doing! (Sounded so good I added it to my sig

)

Quick fixes are always quick routes to trouble!

seithan · Jun 21, 2014

I think i linked all possible menu items Ryan. Could you please tell me how to set the rest of the options , like Vcore LLC, CPU PLL Voltage, PCH, Skew Driving Voltage and that kind of little tweeks that actually matter?

Thanx again!

seithan · Sep 30, 2014

I kinda gave up overclocking my CPU more than 4k. Im using 1.13v at that speed, but im not sure its a static voltage or it auto adjusts. Currently im running 3.3 to 3.7 on 1.06v since i see no real word difference at going 4k.

seithan · Sep 30, 2014

Just a final post ( i guess), i bought the H100i. Temperatures dropped headlong towards 59-60c @ 4.5k with 1.28v in Prime98. Im impressed. Might play around and try lower voltage too

saint19 · Oct 2, 2014

Is it stable? What settings?

Alpha3031 · Oct 3, 2014

saint19 :

I believe it would be 45x100 MHz @ 1.28 VCore

seithan · Oct 6, 2014

saint19 :

Its rock stable. At least after an hour of Prime testing. Im sure i could go lower at least 0.05v but i havent tried it.

i2500k help with OC

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