(Bitch and moan then solution)
I have the Z97X-Gaming G1 WIFI-BK and the I7 4790K (Overheating and Unstable)
I battled for over 5 months, Gigabyte gave me no support and supplier refused to take back the parts as one blamed CPU and the other Blamed the board. As this was my first Gigabyte purchase it will also be my last Gigabyte product due to the total lack of support I received when contacting Gigabyte.
But anyway
Here is the solution I eventually found. although i wasn't getting BSOD, The crashing is probably due to the CPU overheating. as it runs very quickly without much load to over 90 degrees.. I had to disable turbo boost as well to at least get some kind of stability.
Here is the link to fixing the settings
https://communities.intel.com/docs/DOC-23517The example provided will not work for this board (as Gigabyte just doesn't allow Intel's software to interact properly with the Intel chipset .... #^&*% Gigabyte at its finest )
but if you scroll down on the page linked above you will find a solution from another user of Gigabyte (Post date 01-Feb-2015 17:52)
I used :
Turbo Boost Power Max : 88.000W
Turbo Boost Short Power Max 110W
Processor Current Limit 105.A
Turbo Boost Power Time Windows 8.0 secs
I don't know what effect this has on performance I haven't noticed a decrease in performance but CPU heat is stable and so is my system
(Gigabyte if at some point you actually do come to your own forums ..........I'm free and available for employment, the cheap minions your hiring, to do your support, are only successfully meeting their targets of damaging your reputation)