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My first OC - I am absolutely blown away ! Massive increase in performance

post #1 of 30
Thread Starter 
Hey guys,

First off, thanks - I used a lot of resources from OC.net , you guys rock !

I'm a bit of a noob so I was VERY nervous when performing my first overclock.

Long story short:
I OC'd my 2500k (see sig for specs) to 4.5 ghz - stable/59c prime full load , then got greed/stupid and went for 5.0ghz.

My computer didn't just shut down, it refused to turn on, completely non-responsive for about 6-7 minutes. I thought I killed it. Then, it sprung back to life (Any idea why it went non-responsive?)

I put it back to 4.5 ghz and ran my fav game: Company of Heroes 2 - Max settings (+low AA) @ 1080p jumped from 45-46 FPS to a 65-66 FPS !!!!! I had to take a few tests to be sure.

Eh, maybe it's nothing much for you guys. But for a OC noob like me it's kind of a big deal. tongue.gif

I'm so tempted to see if I can get 4.6-4.9ghz but horrified that I could damage something.

cheers all !
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post #2 of 30
Not sure why... What kind of voltage is it needing for that? Also what kind of graphic card you got? Default cache ? Ram speeds?
post #3 of 30
Thread Starter 
Quote:
Originally Posted by Alpina 7 View Post

Not sure why... What kind of voltage is it needing for that? Also what kind of graphic card you got? Default cache ? Ram speeds?

Hey Alfina,

as per my sig (sorry if it's not 100%), ram speeds are 2133mhz cl9-11-11-31..1.6v)- I have an r9 290 asus stock speeds, well, my CPU vcore fluctuates between 1.3 and 1.37. HW monitor.

Sorry, not sure what you mean by default cache?

I just remembered ! At the time when I went 4.5ghz + 5.0ghz I was only at 1333mhz as I hadn't corrected my RAM timings+frequency.
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post #4 of 30
It's your RAM. That's -mainly- what's causing the huge gains in your game. RAM at that speed and timings is phenomenal.
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post #5 of 30
Do not leave it on auto voltage. Try setting it to offset mode. Offset with 0 will essentially give you a bit less then the VID voltage (VID is what the CPU asks for based on how Intel designed it, unique for each CPU). You can then add + or - additional voltage to correct it for your personal overclock. Try to get down to 1.3v or less in HW monitor. It will be trial and error, basically first set it to Offset +/- 0 voltage. If it boots okay, then try stability test. If it is stable for a few minutes reboot, set it to -.005V offset. Try again. If that is okay, try -.010V offset. Gradually try to figure out what the lowest voltage you need to remain stable and run the speed you want.

Once you are in Windows you can see how much voltage you end up with as a combination of the base value (which is near your VID amount for the given clock speed) + or - the offset amount.

After you think you have it stable, run Prime 95 for a few hours to see if it is truly stable (doesn't crash). If it crashes, then you need to add a bit more voltage back in by changing the offset once more.

The advantage of using Offset is you can usually run less voltage then the Auto value and the voltage will go up and down based on load unlike if you had put a fixed specific value into voltage instead of either Auto or Offset.
Edited by Vario - 1/24/16 at 6:37am
    
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post #6 of 30
Thread Starter 
Thanks for the replies.

Here's what confuses me: I can't seem to get it off auto-voltage. Also, I don't see an option to +/- voltage, it just gives whole numbers to select as my primary voltage (see links below)


I can't seem to manually control my CPU core voltage. I've got the latest bios, gone into the tweaker and selected , say, 1.30v for example but when I boot into it windows it froze and I saw it was only on 1.23v

It keeps on undervolting.... I set my vcore to 1.4v (4.5ghz) and it's stable HOWEVER my vcore is fluctuating between 1.3 and 1.375 (HW monitor + real temps)

Why can't I just set my vcore and have it fixed? I've disabled all power saving options. Heat isn't the issue. It's a stable 4.5ghz so I don't see it underclocking.


This isn't mine, but my BIOS looks almost identical. I've just disabled turbo boost.

http://assets.overclock.net.s3.amazonaws.com/c/c8/c874429e_vbattach222172.jpeg

--- Some more screens if it helps. Ihttp://www.hardwarecanucks.com/forum/hardware-canucks-reviews/40726-gigabyte-p67a-ud7-b3-sandy-bridge-motherboard-review-9.html
Edited by nick2124 - 1/24/16 at 8:59am
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post #7 of 30
Put a USB in, go to your bios and press F12 to take screen shots of your settings and let us have a look
post #8 of 30
Quote:
Originally Posted by Alpina 7 View Post

Put a USB in, go to your bios and press F12 to take screen shots of your settings and let us have a look

I am not sure if that works on a p67 mobo? If it does awsome smile.gif

To nick2124 you should be pretty good with 4.5Ghz on the core speed as other things will more than likely hold your fps back before your cpu clock will now. I would focus more on geting that memory tweaked altho not too sure how much you can do with that p67 chipset i never had great luck with memory timings on the p67 boards i have used. idealy 1866 cas9-9-9-23 would be something to shoot for. edit:(not to say 2133 is doing bad i dident notice you had your cas at 9 already smile.gif) End edit.

You can always go faster on the cpu if you want, but temps will go up very quickly and voltages will start to require a lot more to stabilize. So unless you have some very spendy cooling you are safest to stay around the 4.5 mark smile.gif
Edited by Formula383 - 1/24/16 at 10:06am
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post #9 of 30
Vcore normally fluctuates either from Vdroop or from power saving functions. There is nothing wrong with that. You don't need to disable power saving functions either. Those are good, they will extend the life of your hardware and reduce your power consumption.

Offset mode may be called DVID on that board I think. If you have adjustable DVID it may be + or - .05V increment. Try putting -.05 into that and see if the voltage in windows at full load goes down by ~.05V.

You can probably get by with 4.5 ghz, 1.25V at full load and all power saving functions left on. That should be something to aim for. You may need more like 1.3v which is fine as well. I also think you don't need to disable turbo just leave that all on auto and just change the multi to 45x.
Edited by Vario - 1/24/16 at 10:23am
    
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post #10 of 30
Quote:
Originally Posted by Formula383 View Post


I am not sure if that works on a p67 mobo? If it does awsome smile.gif

 

Whether it works depends on whether the manufacturer included that ability. It doesn't depend on the chipset. For example, the ASUS P8P67 series of motherboards can take screenshots by pressing F12 while a USB flash drive is connected.

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