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I5 2500k @ 4.3 ghz by only changing multiplier - Page 2

post #11 of 16
Disable any of the extras you're not using. I have disabled 1394 (firewire), GSata controller (using the stock Intel one), the onboard GPU. My board with run 4.5 with everything else, including vcore and all power saving options (C1, C3/C6, EIST) enabled/auto. Yes, it uses a touch more vcore than I would set manually (1.36 I think on auto) but it works fine. Not quite the same mobo, but a very close relative to yours.
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post #12 of 16
Thread Starter 
Quote:
Originally Posted by ComradeNF;15200644 
At 4.5GHz a nice Vcore to start at is 1.28v. Run Prime95 custom on 1344 and 1792 FFT's with 90% of your RAM used for 15-30 minutes each. Then try Intel Burn Test on Maximum. If your PC still has not crashed, test with Prime95 blend for 12 hours.

If your PC does crash, increase the Vcore in small increments.

Unfortunately my pc will not boot at 4.5 ghz. It goes to the BIOS option then automatically reboots. It continues this cycle until I go into the BIOS and manually change it back to 4.3 ghz.
Quote:
Originally Posted by SMK;15200445 
Highly doubt it's a Gigabyte flaw. There's something in the bios you haven't done or aren't doing right. What are your voltages set at?? Power options? C states?

I have a "dynamic" voltage setting in my BIOS, so I tried +0.08. This had my Voltage at 1.43 and I still was not able to boot. C3 and C6 were both disabled.
Quote:
Originally Posted by deadly12;15200585 
As far as mobo not booting, like someone else said above, most probably a different batch chip than others.

Different batch chip? What does that mean? Like the same model but with a faulty piece of hardware on it?
post #13 of 16
Hi, can anyone help me out here? I have the same mobo and cpu and stuff is missing in the BIOS advanced settings preventing me from OC'ing.

I have a GIGABYTE GA-Z68A-D3H-B3 (rev. 1.0) Motherboard. I was following this guide: http://www.bit-tech.net/hardware/cpus/2011/01/07/how-to-overclock-the-intel-core-i5-2500k/4 with no issues until I had to set my CPU Vcore to 1.3. Problem is... the option isn't even there for me.

Here's what it looks like for me:

21m88s0.jpg

And here is what it should look like from that guide:

ga-p67a-ud4-bios10.jpg

Notice how I lack that CPU Vcore option under Load-Line Calibration.

My BIOS version is F1 for this MOBO, do I have to upgrade my BIOS version? If so, how would I go about this? I checked the GIGABYTE website in the downloads section for my model and there's like a **** TON of different drivers/BIOS to download and I am not sure if I should download everything and update or if it's just unnecessary.
post #14 of 16
Yes, you should update your bios, I can see F11 is already out
post #15 of 16
What are you guys running that need such high clocks? I'm running my 2500k at stock clocks and everything runs great as is. I have found for what I do, mainly gaming and some editing, stock clocks run everything great, and noticeably better at times than the old phenom quad.

I want to make a suggestion. Don't run intel burn test or prime, or anything that puts unnecessary stress on your system for half a day or a full day like some suggest. Run a stress test for half an hour to an hour at most if you feel you really need to.
    
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post #16 of 16
OP to get 4.5ghz you should be able to just change the vcore and the multiplier. Usually when you try go above that you need to change other settings, but as long as you have your ram set correctly, change those two and see what happens.

Theres a link in my sig if you want to overclock slowly, might be better in the long run to do the slower overclock as apposed to the quick n dirty method above.
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