4.2 GHz+ and weird shutdown issue

Dave3000

Golden Member
Jan 10, 2011
1,520
114
106
I own an i7-4930k and an Asus P9X79 Pro and I have a weird issue when I set my OC to 4.2 GHz or higher after saving the settings in the BIOS. The weird issue is that after saving the BIOS settings and exiting the BIOS, instead of restarting right away, my system will shutdown for 3 seconds and power back up. This shutdown issue does not happen at less than 4.2 GHz. Also when I go back to stock settings from 4.2 GHz+ I get the same shutdown issue for 3 seconds. It does not seem to matter what the CPU voltage is set to because even setting it to 1.25v on the vcore, it still has that same issue with shutdown after exiting and saving BIOS settings at 4.2 GHz+. Is this a known issue with the 4930k on this motherboard once it hits 4.2 GHz or is it an unstable OC that is causing it?
 

VirtualLarry

No Lifer
Aug 25, 2001
56,587
10,225
126
Intel chipsets have always double-booted to change chipset straps, for some reason. Back to the 965 / P35 days, or perhaps earlier. There may be a chipset strap change around 4.2Ghz.

If it double-booted multiple times in a row, or did it, and then posted with an "overclocking fail" message, or a Mhz rating that was stock, then I would say it was because of a failed OC.
 

Puffnstuff

Lifer
Mar 9, 2005
16,204
4,884
136
On my z97 chipset when I make a bios change it will often times, depending on what I've changed, do the very same thing and is normal.
 

Burpo

Diamond Member
Sep 10, 2013
4,223
473
126
Intel chipsets have always double-booted to change chipset straps, for some reason. Back to the 965 / P35 days, or perhaps earlier. There may be a chipset strap change around 4.2Ghz.

If it double-booted multiple times in a row, or did it, and then posted with an "overclocking fail" message, or a Mhz rating that was stock, then I would say it was because of a failed OC.

This ^^^^^^^
 

crashtech

Lifer
Jan 4, 2013
10,695
2,294
146
It might be a problem if it continues to do it even when no settings are changed, but most boards I have owned need to "cold boot" themselves when certain things are changed. My current Z97 board will also cold boot itself when memory timings are changed.
 

Schmide

Diamond Member
Mar 7, 2002
5,745
1,036
126
I had this same problem. I had to increase the voltage to the ring bus or uncore area by like 10%.
 

Dave3000

Golden Member
Jan 10, 2011
1,520
114
106
When I used to own a Gigabyte P45 motherboard with a Q9450, and an Intel P45 motherboard with a E6700 it would do the same thing after changing certain CPU settings in the BIOS like hyperthreading or cores used.