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Noel

X79 users: is BCLK of 126.23 bad news for data corruption?

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When I first assembled the box a few months back I started w/ the UEFI's BIOS's built in overclocking option called Extreme.  Knowing that it can send too much voltage to the CPU and memory controller, I edited these inputs to manual control and have otherwise exactly followed JJ from ASUS's guide on overclocking SB-E.  I have a stable 4.4Ghz on 1.305v to the CPU, with as I say other parameters compatible w/ JJ's advise.   No problems whatsoever so far.   But, the automated routine ended up making the BCLK at this value, and as a result my memory is overclocked almost to the full 2400MHz it's rated at.  Mind you, SB-E is only supposed to support 1600Mhz.   Some comments I've read that you should never change the BCLK value from 100 +/- 4 or so due to USB & SATA depending on this clock and that data corruption is potential problem because of this.  Yet, I don't appear to have any issues that I can surmise:  SMART always reports perfectly, CHKDSK always looks perfect, etc.  I can set manual BLCK to 100, still get 4.4Ghz at the same voltage, but memory won't get past 2133Mhz, though haven't delved into adjusting memory timings to improve on this.  I do know w/ the automated BCLK at 126 the default timings fro 2400Mhz (XLT) work fine--not so when I manually set BLCK to 100, so this is why I've left it as is.  Both latency and read rate are significantly improved w/ memory freq up near 2400 where it is now.

 

The CPU Strap is set at AUTO, but as I say the reported BCLK is 126.23 or so.  Since I've got a few months of no problems I'm inclined to think I'm misinterpreting something about BCLK that is reported thru the BIOS or  AI Suite (Is the number set by the CPU Strap?) and or that the wisdom I read about not deviating far from 100 is not correct?  Thoughts?  

 

Thanks!


Noel

System:  9900K@5.0Ghz Noctua NH-D15S, 32Gb 3200mHz DDR4, NVme 2Tb x 2, RTX 2070 Super, Win10 Pro, Dell curved 3440x1440, Saitek Yoke, TQ & Cessna Trim Wheel, UNLIMITED frames Vsync to 30Hz refresh

 

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Auto means your mobo will set it at will. Since there're just so many available straps in your case it must be 1.25

 

126.23 / 1.25 = 101

 

So your BCLK is running at 101 on auto

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Auto means your mobo will set it at will. Since there're just so many available straps in your case it must be 1.25

 

126.23 / 1.25 = 101

 

So your BCLK is running at 101 on auto

Ahh, thank you Dario.


Noel

System:  9900K@5.0Ghz Noctua NH-D15S, 32Gb 3200mHz DDR4, NVme 2Tb x 2, RTX 2070 Super, Win10 Pro, Dell curved 3440x1440, Saitek Yoke, TQ & Cessna Trim Wheel, UNLIMITED frames Vsync to 30Hz refresh

 

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