Can't run i7-4930K with XMP

[DWayn]

My new build with a i7-4930K will not operate properly with the XMP profile set. I'm using G.Skill F3-14900CL8Q-16GBZM 1866mhz 16GB (4 x 4). I should be able to operate this right out of the box, but it will not. The system becomes very unstable and restarts when trying to shutdown. If I set the memory manually to 1866mhz, the CPU will not reach it's 3.9 turbo setting. It will only go to 3.6 Also if I test the system on stock settings with Prime95, core # 0 is much slower than the other cores at passing the test. It WILL NOT pass Intel's Processor's Diagnostic Test even once.

Do I have a bad / weak CPU. You would think it should run 1866mhz as advertised.

[Allan_J_Intel1 · Accepted solution]

Hi ski-bum,

It appears to be an issue with memory controller hub on the processor. Please bear in mind this is included on the processor.

If the processor is still under warranty please get in touch with our Warranty Department so they can help you to replace the unit: http://www.intel.com/p/en_US/support/contactsupport http://www.intel.com/p/en_US/support/contactsupport

Thanks

Allan.

[DWayn]

I agree with you Allan,

I am able to run the memory at 1866mhz if I set it manually and set the CPU to "per core" instead of "sync all cores"

I've contacted Intel and they are RMA'ing a new chip.

Thanks for your input.