i7 4790k 24/7 my settings help

There's no need to change I/O voltage when using standard 100Mhz BCLK frequency. Keep it at auto settings.

Regarding the CPU cache frequency, my 4790K does 4,2GHz @ 1.19v on a Asus Z97-Pro MOBO.

 

I get slightly better synthetic benchmarks numbers with uncore @ 4,2GHZ VS. 4,0GHz. Also better memory read and write speeds, but nothing that makes palpable difference at real world gaming.

 

There is something I do not understand:
why the recommended cache voltage for 24/7 is 1.15v ask this cause my cache stock is 1.18v, that is to say, a stock starts from 1.185v without OC

 

thanks all, finally i have found 2 stable OC settings
1- 4.7ghz 1.272vcore 40x cache
2- 4.8ghz 1.312vcore 40xcache
maybe the second is too much and the cpu will degrade faster...i dont know if i use it.
Anyway I use IXTU to change profiles

 

Some Haswell at least from my experience, has too much vCore by default. My 4790k does 4.5Ghz with -0.070v Adaptive CPU Vcore (1.21V and 1.25 for AVX).
Probably if you set it to 1.15V to the cache will be stable.

BTW: 4.8Ghz with 1.31V is pretty good up to 1.35v is safe on air acording to Intel, but in my opinion stay at the minimum vcore possible. From 4.6Ghz to 4.8Ghz there is a big step on vcore but the performance increase is minimum

 

very interesting, i forget to say that another stable adjustment that can i achieve is 4.6ghz at 1.225vcore