I5 2500k - Gigabyte Z68XP-UD3P Overclocking

Im running 2500k @ 4.5 with 1.4v all looking stable at 78c under load.

So its going to be reboot and reduce the vcore slowly until it starts to misbehave.

I have LLC set to level 1 virtually no vdroop.
 
Gazanimal said:
Even with the beta version it's showing the low voltage.

Just checked with EasyTune and it's showing 1.358 volts
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Yeh, CPU-Z doesn't read the voltage's correctly with many Z68 boards especially this one :(.

Use easytune 6 for the time being, just don't mess with the turbo buttons :D

Snubber said:
Disaster avoided...the problem seems to be that I wasn't waiting long enough for the reset back to default BIOS settings. I had to leave the battery out for 5 minutes. Booted up fine at default clock speeds.

Think I'll wait a while until I try OC'ing again.
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What bios version?, 4.5 should work could be the cpu not liking my settings. Try 4ghz and work your way up slowly :)
 
Well done :) now do some benchmarks and see if the performance increase is worth it for you. I've actually gone back to 4.5ghz as I can run that at 1.21v and see very little performance decrease (if any) but it runs so much cooler at both idle and under stress.
 
Neil79 said:
Thanks Phunky

Has been a rough ride mainly due to Offset/DVID not working as it should
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Can you use LLC and DVID together when running on Auto Voltage with these Gigabyte boards?

If not, when using say just DVID in Normal Voltage mode, do you get any Vdroop at 100% load?
 
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what sort of idle temps do you guys get? I just put my UD3/2500k combo together last night and on water its idling about 36/37? it has a GTX480 in the loop with the gfx card first btw.
 
Followed the guide for 4.5ghz
Set CPU Vcore to 1.330v but says:-

CPU Vcore 1.360v [1.330v]

Also in bios now says:-
Bios Version F6
BCLK 100.32 (always had the extra .32 though I set to 100)
CPU Frequency 4514.50 MHz
Memory Frequency 1605.10 (is this still ok for sandy bridge?)

CPU temp 35.0c

Vcore 1.380v (this is MAIN question, does this look right when I set it to 1.330v??)
Dram 1.608v

Thanks for the guide, my windows CPU went from 7.5 to 7.7 and memory 7.6 to 7.9

(also I had one option under advanced CPU core features called "CPU EIST Function that wasn't mentioned on here. I left it as Auto)
 
Yes that looks about right as you are using load line it will give it that little extra because of vdroop, keeps your volts more stable. For example i'm trying for 4.7 again as my cpu is cooler by 7C.

1.35V + Load Line Calibration level 6 = 1.38-1.40v using intel burn test.
 
just stuck my cpu to 4ghz as a starter just changing the multi to 40, vcore 1.33 and memory on profile 1.

Running the max burn test with my fans spinning and I'm loading at about 60, the only issue I can see is the temp spread across the cpus is as bad as an old Q6600 I had that I ended up lapping.

currently 52, 59, 59, 53 which ain't right but I'm not going to lose sleep over it.
 
Ok 4.8 is very unstable and that would mean messing with the voltages some more which I can't be bothered to do, 4.7GHZ is my limit and is stable.

One thing I hate about this board it's a pain in the arse to reset it back to default settings with it constantly ending up at the logo screen, freezing then rebooting with a bad OC. Even resetting the cmos can meet with the same issue. Also if it does crash you can sometimes end up with no display till you end up on the logo screen. Really should have a better way of clearing a csmos.
 
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