R4BE and code 124

[nickolp1974]

Ended up getting a pretty good chip after my last one, made use of the intel tuning plan 😉

Currently running 4.75GHz @1.36v on my 4930k with tridents at 2400 cl9,
Sa/vtt volts are at 1.25.

4.8ghz is stable at 1.44v anything higher and the only bsod code i get is x124 no matter what i do it is always 124.

I can boot into windows at 5ghz at 1.46v with ram at bios defaults.

Running win 8.1 so its quite hard to pin point, just curious as to why i only get the 124 bsod code??

Are there any settings on the BE which can help with bench clocks apart from the usual x79 stuff?

Will only run pi at this.

[Raja]

You are probably out of headroom on the CPU. These CPUs don't clock much past 4.8GHz without their temps being a lot lower. The voltage you need to get the CPU stable at the temps you are running now, willbe too high hence the instability.

124 BSODs = Vcore and to a lesser extent VCCSA/VTT.


Your post gives the info away in itself - look at the voltage jump between 4.75G and 4.8G. It is 0.08V. That is at the end of the CPU being in its comfortable range.

-Raja

[nickolp1974]

Thx raja, temps are only hitting 59c at 100% load (prime), supposing i need chilled water or better then??
Just found it odd that the only code i get is 124.

Would water help on the vrm's help any?? (Benching only)

[Raja]

Hi,


1) What are you using to measure the temps?

2) No just place a fan over the VRM. Cooling with water won't help. A 0.08V rise tells me that CPU is out of headroom. I bet it needs over 1.50V just for another 50MHz and at that point I wonder why one would even bother chasing it. When the CPU needs a big voltage jump like this, the current you are putting throught the die increases exponentially. You've got a good CPU there, that I would personally run at 4.7G with a nice low voltage.

-Raja

[Raja]

1) What are you using to measure the temps?

2) No just place a fan over the VRM. Cooling with water won't help. A 0.08V rise tells me that CPU is out of headroom. I bet it needs over 1.50V just for another 50MHz and at that point I wonder why one would even bother chasing it. When the CPU needs a big voltage jump like this, the current you are putting through the die increases exponentially. You've got a good CPU there, that I would personally run at 4.7G with a nice low voltage.