Some advice on OCing 2500k to 4.5ghz? (P8Z68 V PRO)

ParrotBoy

ParrotBoy

ParrotBoy

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Hey, I've had this rig for a while now, never bothered with overclocking but it turns out that this CPU is a pretty good overclocker so I may as well give it a shot.

I tried using this guide:

However the CPU always seemed to be running at 4.5ghz, even when there was nothing else running. I tried fiddling about with a few settings, but that only resulted in a BSOD (my first one in years too hah)

So could someone help point me in the right direction to OC this CPU to 4.5ghz? Cheers! (and i've got a CM 212 cooler on it)
 
You need to have speedstep enabled in the BIOS, and have 45 as the multiplier for the boost clock rather than the base clock. Then if you use offset voltage, the voltage will crank up and down depending on what is needed as well. :)
 
Speedstep was enabled in the BIOS which is what was confusing me, I'll give it another whirl shortly. Thanks!

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Yeah when I went through and enabled (what I think) were power saving options, then thats when I was greeted with a BSOD. But yeah I'll try again shortly, thank you!
 
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Maybe knock the OC down to 4Ghz and try from there. If all is good then increase 100mhz at a time until you BSOD, then bump the vcore up a notch, keeping an eye on temps under full load.
 
Sweet, I'll give that a go thanks! Although to be honest I don't really feel like I understand what I'm doing here, I'll try and find a little overclocking summary guide type thing then things might click

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Ayyy I think it's sorted, overclocked to 4.5ghz, it rests when im not doing anything intensive, did a quick test with BurnInTest for 10 minutes and I was getting a consistent temp of 60C, I'll do a test while I sleep to see if it stays stable, but hopefully this is sorted. Thanks for your help everyone!
 
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ParrotBoy said:
Sweet, I'll give that a go thanks! Although to be honest I don't really feel like I understand what I'm doing here, I'll try and find a little overclocking summary guide type thing then things might click

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Ayyy I think it's sorted, overclocked to 4.5ghz, it rests when im not doing anything intensive, did a quick test with BurnInTest for 10 minutes and I was getting a consistent temp of 60C, I'll do a test while I sleep to see if it stays stable, but hopefully this is sorted. Thanks for your help everyone!
Click to expand...

Sounds about right there :)
 
Put in some new RAM today (1.65v), upgraded from 2 x 4gb 1600mhz sticks to 2 x 8gb 2400mhz sticks. When I put them in the computer wouldn't post and the LED indicator was flashing indicating a problem with the ram. So I take it the new higher voltage RAM was causing issues with the overclocked CPU or vice versa? I reset my BIOS and im no longer overclocking. I'm still not great at overclocking so could someone push me in the right direction to remedy this? Thanks!
 
Reset the BIOS to help the system post, then make sure the correct XMP profile is selected and that the RAM voltage is correct, then dial your overclock settings in like they were before, and see if that works :)

If not you might need to bump up one of the voltages. Can't remember which one...... :p I'm sure someone will come along and fill in that little detail. As it is quite important. :D
 
Perfect! Thanks so much, I'll let you know how I get on.

I stupidly assumed the RAM was faulty and processed the return with amazon before realizing what was actually going on ahahah, so the new sticks will be arriving tomorrow and I'll give it a whirl. Thank you both for you help! Hopefully this all goes smoothly, i'm assuming the 2500k and 2600k are pretty similar?
 
ParrotBoy said:
Perfect! Thanks so much, I'll let you know how I get on.

I stupidly assumed the RAM was faulty and processed the return with amazon before realizing what was actually going on ahahah, so the new sticks will be arriving tomorrow and I'll give it a whirl. Thank you both for you help! Hopefully this all goes smoothly, i'm assuming the 2500k and 2600k are pretty similar?
Click to expand...

The settings I used were identical for both chips, 2500k will be fine.
 
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Wahey, seems like this one is fine so far. Running a stress test with prime95 right now. Under load it seems to run at about 65/66C, and idle is about 38C

Just one question, in CPU-Z, the multiplier is pretty much always at 45x, and very rarely dips down to 16x, this isn't really an issue is it? Thanks for your help, much appreciated

EDIT:
Nevermind, just had another BSOD thrown at me
 
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In BIOS look for and enable c3 c6 and c1e from auto

Try with +0.035v CPU offset now

While stressing look in cpu-z and tell me the CPU voltage under load
 
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