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X99M Extreme 4 - Xeon > 103mhz BCLK OC

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    Posted: 05 Jan 2017 at 12:48am
Hi

is there anything I can do to try to get more than 103mhz stable BCLK OC on a xeon v4 on the x99m ex4 ?

Many thanks,
Konstantinos
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Xaltar Quote  Post ReplyReply Direct Link To This Post Posted: 05 Jan 2017 at 12:55am
Not really sadly. Haswell-EP and Broadwell-EP CPUs do not have unlinked BCLK like Skylake or Kaby Lake so the instability comes from other components being effected by the raised BCLK such as PCIe.

The only things you can try are voltage tweaks for your VCCIO VCCSA, PCIe, system agent etc. If there is a voltage setting google it to see what it is for and if upping it can increase stability. I doubt it will make any difference but if you are determined to try then be sure to double check everything via research before proceeding. Adjusting the wrong voltage or adjusting too high can fry your system. Personally I wouldn't recommend it.

Let us know how it goes if you do try though Thumbs Up
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Post Options Post Options   Thanks (0) Thanks(0)   Quote mer Quote  Post ReplyReply Direct Link To This Post Posted: 05 Jan 2017 at 1:01am
What would be the primary components to fail at more than 103mhz ? I know this is a vague question.  I only run a PCIE AMD radeon on the system and an m2 . I could give the system a try with higher voltage agents. I dont mind playing with the voltages a bit :)


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Post Options Post Options   Thanks (0) Thanks(0)   Quote Xaltar Quote  Post ReplyReply Direct Link To This Post Posted: 05 Jan 2017 at 1:37am
PCIe, RAM and PCH (chipset) mostly.

I tried to find a decent diagram that lays out what effect BCLK has on Haswell and Broadwell-EP but I can't seem to find the one I referenced a few years back anymore.

Again, voltage adjustment is a long shot Wink

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