Overclocking CPU ratio settings resetting

Minarva · 3 Jul 2015 at 03:00

Hi there,

I've recently bought an asus x99-pro and a 5820k. All is lovely except when I try to apply an overclock it just completely forgets my settings (and yes I do click change settings). This applies mainly to the CPU ratio setting, most of the other stuff in the BIOS is happily changeable. I have XMP enabled to the 3000Mhz profile which gives me a 29 multiplier and 125 strap, and even trying to change it to 30 is forgotten. Am I doing something obviously wrong?

Thanks for any help!

PS. I also have the latest BIOS from ASUS which I have flashed on.

FloppyPoppy · 3 Jul 2015 at 05:47

No this happens to me and everyone else. Running Ram at 3000mhz and sometimes less requires it to run at a 125 base clock, you just need to work around it and alter your ratio accordingly instead of doing it as 100(bClock)x(Ratio) you have to do it as 125(bClock)x(Ratio)

i also cannot turn of turbo boost as this removes the overclock.

Once again just something to work around

Minarva · 3 Jul 2015 at 09:31

I'm not sure I quite get it. I know that the bclk is 125 and that's that, I'm just more wanting to know why I can't then change my multiplier afterwards? I thought cpu and ram multipliers are separate - otherwise if you enable xmp you can't overclock anymore?

FloppyPoppy · 3 Jul 2015 at 09:52

Minarva said:
I'm not sure I quite get it. I know that the bclk is 125 and that's that, I'm just more wanting to know why I can't then change my multiplier afterwards? I thought cpu and ram multipliers are separate - otherwise if you enable xmp you can't overclock anymore?

You will be able to change them afterwards you will just need to re enable manual overclocking

it for some reason disables it. You can still overclock with XMP on

Minarva · 3 Jul 2015 at 10:11

Hi, thanks for the replies. The point I'm trying to get across is any time I even attempt to touch CPU ratio settings (or even change from XMP mode to fully manual only) and try to save and reset, it will not save. E.g. XMP sets me to 29 cpu ratio and 125 BCLK - I try to change it to 30 (with a voltage of 1.3V which is already saved) which is as minor as it gets. When I save settings and restart it will be back to 29.

Minarva · 3 Jul 2015 at 11:05

I tried to reset again and go from there and got a bd q-code. Not much info on the web about this - seems memory related, any clues?

Edit: I've also tried increasing system agent voltage incrementally up to 1.3V.

FloppyPoppy · 4 Jul 2015 at 03:25

Minarva said:
I tried to reset again and go from there and got a bd q-code. Not much info on the web about this - seems memory related, any clues?

Edit: I've also tried increasing system agent voltage incrementally up to 1.3V.

The manual for your board will have every error code inside it

I don't think system agent voltage at 1.3 is safe at all. Pretty sure it's happy around 1, but i could be wrong.

Bubo · 5 Jan 2016 at 11:30

Is the OP still around? I am having exactly the same issue with the bios seemingly incapable of saving anything I put in for the CPU core ratio and the CPU min/max ratios. They will revert back to the default non-overclocked values after saving and exiting the bios, either by pressing F10 or using the exit menu.

These are the only settings which are defaulted every time. Things like manual voltages save fine, along with other things like disabling HD audio etc.

The only way I could get it to keep any changes to these ratios, is if I change the "OC tuning" line in the BIOS from "keep settings" to "ratio". Now this sounds like it might make sense to do what I want to do, but from what I understand this setting is only intended for people who want the board to "tune" itself and find a decent overclock, not for full manual control.

As I say, using this "OC Tuning" does actually save the ratio settings, and I can even modify these later and these also save, which I have done and it seems fine at 4.5GHz. But some some bizarre reason I lose the ability to manually change the CPU System Agent voltage if I leave it on "OC Tuning", it won't budge from Auto. Pretty much all other voltages remain manual-able in the bios. It is very strange. This is with the latest 2011 bios.

I assume all the Asus x99 boards will be the same in terms of the cpu ratio options in the bios, so has anyone got a definitive reason why it is doing this? It doesn't matter if I select XMP or Manual in the AI overlclocking setting at the op of the Tweaker bios page, it won't save ratios unless I use OC tuning.

mmj_uk · 5 Jan 2016 at 11:57

It sounds to me like you've overclocked something too far and the system is failing to post, which these days usually results in the BIOS settings automatically being reset to something that will post. It saves you having to mess around with the CMOS clear jumper like back in the old days.

XMP settings are by no means guaranteed so I would start with putting memory to officially rated specs and then overclock it gradually.

EDIT: Don't disable turbo mode either, it's usually necessary to use any multiplers above stock even if you have a fixed multiplier of 45 or whatever.

Bubo · 5 Jan 2016 at 12:12

It boots into windows fine at 4.5GHz and DDR3200, using the OC tuning feature as I mention, and seems stable in RealBench. It's only if you switch off OC Tuning it refuses to save the cpu ratio settings. If I go back into the bios, and change OC tuning to Keep settings, without changing anything else from what the OC Tuning thing set itself, and reboot, it will forget the cpu ratios settings again.

One thing I will try tonight is double check by manually copying everything for every setting in the bios with OC tuning on, reboot and change it back to "keep settings" and check nothing else is changed, and see if it saves.

Also, and this will really confuse you, if I default the BIOS, and do nothing else than DOWNCLOCK the cpu ratio, say by 1, it will also not save the cpu ratio change. When I go back into the bios it will have gone up one, i.e. to 33

, I assume this would rule out it being mainly a POST issue

I can also leave the bios at default deliberately and use Intel Extreme Tweaker to overclock while in windows and it seems fine, though admittedly that is not subject to any POST related difficulties.