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Stable at 4.4GHz but...

D

double-dragon

Junior Member
I've had my i5 2500k running at 4.4GHz and run Prime95 for 13 hours and done a 1 hour test with OCCT and everything points to the result -> Stable.

x0teuu.jpg


The only BIOS settings I have changed are the CPU multiplier to 44x and the Bus Speed to 1002 (this is because it was running at 99.8MHz, so now it runs at 100MHz)

The problem I am having is that I sometimes get multiple boots, which I am fine with, but they often lead to the BIOS resetting my OC back to default (33x).

Also, yesterday I had my comp in Sleep mode and it wouldn't wake. I was stuck with a frozen mouse pointer on a black screen.
I did a bit of research on this and turned off power control features on the Realtek GBE controller. I hope this fixes it.

The board I have is a Gigabyte GA-Z68-UD3P-B3 with a CM Hyper 212+ heatsink.

Any insight would be much appreciated.
Thanks
d_d
 
Raise the voltage. It might run fine when it gets into windows but it might not have enough voltage to run 4.4GHz at bootup. So the bios reverts to defaults.

Also try increasing the current limits. Pushing up against the current limit at bootup might make the bios think there is a problem which causes it to revert.
 
I notice if you hit the power button after it POSTs during a reboot it will revert back to defaults no matter what. As long as you change any kind of overclocking setting it will revert if you power down the system improperly. I just manually changed the vdimm voltage to 1.5v, rebooted into windows, then restarted and powered down. It gave me the "boot failure due to overclocking warning"
 
Just had 3 crashes in Windows. Each time I get the Safe Mode options at boot after a hard reset. Not sure what the hell is going on. Been running perfectly fine over the past few days. It's very much getting in the way of my playing poker D:

I've removed my OC for now. If/when I do put it back, what sort of vcore setting would you recommend? Something around 1.3v with LLC on level 4?
I am running F7 Bios.

Thanks for replies so far,
d_d
 
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I had this same exact problem early on with my GB mobo too (Z68XP-UD3).
Due to lack of time at home (on work related travel) to this date, I have since given up o/c'ing until I find more time doing some research.
Have you tried GB Easy Tune 6 (use the current version found on line if possible)?
If I had to guess, I think the issue may lie around the mobo stability or instability.
 
double-dragon said:
Just had 3 crashes in Windows. Each time I get the Safe Mode options at boot after a hard reset. Not sure what the hell is going on. Been running perfectly fine over the past few days. It's very much getting in the way of my playing poker D:

I've removed my OC for now. If/when I do put it back, what sort of vcore setting would you recommend? Something around 1.3v with LLC on level 4?
I am running F7 Bios.

Thanks for replies so far,
d_d
Click to expand...


Just sounds like your chip is breaking in. These chips are known to overclock better at first then they "level off" after a bit of use. Set it back 100mhz and you should be good.

I owned a 2500k and 2600k and they both did the same exact thing.
 
SLK said:
Just sounds like your chip is breaking in. These chips are known to overclock better at first then they "level off" after a bit of use. Set it back 100mhz and you should be good.

I owned a 2500k and 2600k and they both did the same exact thing.
Click to expand...

Thanks, that puts my mind at ease a bit 🙂

I reset the FSB to 1000 and put the CPU back up to 44x. Bus Speed shows as 99.8MHz in CPU-Z again. Should I just forget about that being 100MHz for now?

Cheers
 
I had the same issue when I was testing overclocks on my Z68X-UD3H mobo. Do you have multi-steps load line in your BIOS? I found that if you don't have it set to level 5-6, the vdroop can be pretty intense. At 4.5ghz, 45x100.2, 1.295v with level 6 MSLL, if I could boot into Windows I could be prime stable for hours, but sometimes I would just BSOD on booting into Windows or at POST. I bumped the voltage to 1.310v and that fixed all issues. My Hyper212+ keeps it under 67C under full prime load.
 
I had similar issues and simply clocked to 4.2 instead of 4.4. I had limited desire to tweak it further to push 4.4+ when hardly anything is even pushing the performance at 4.2

Later I might go for more but for now this is just fine with me.
 
After 4.4ghz its recommended to increase the VCCIO voltage over 1.05v. I didn't know this at first and my last 2500k was at 5ghz with the default VCCIO voltage, I guess it was a good overclocker if I would of just raised the VCCIO, I bet I could of decreased the Vcore immensely.

D_D - you know there is an update to the realtemp you currently have. They have a v3.67 and 3.69 beta fyi. It will report your values and CPU correctly.
 
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