4790K Reaching 4.9 help

[passey89]

Right I currently have a Asus Z97 pro gamer

Stable at 4.8ghz 1.32v nothing else changed.

Can't seem to get it stable at 4.9 no matter how many volts i put through it.

Could use a little help gaining the last .1ghz.

Has a full custom loop so temps at 1.32v are perfectly fine.

Have been reading to try the following settings
Input voltage 2.0v
Cache voltage 1.2v
Cpu cache ratio 42x
Ram Voltage 1.5v

Are there any other settings i should try / need to change?

Is it worth disabling turbo mode on the cpu?

Goal is to try and break 20,000 in firestrike.
currently scoring 19,300 going to try and up the voltage on the gpu a but to get a bit more from that but i think the .1ghz from the cpu should do it.


forgot too add

I can get it to boot at 4.9ghz 1.35v but running bench's it locks up.

 

[BluD]

If its taking ya 1.32 for 4.8 then ya gonna be needing close to 1.4v for 4.9 probably. Maybe try a higher LLC setting, might help stabilize it a little. I normally run my LLC on high but not ultra/extreme what ever the top setting is. My chip is benchmark stable at 1.28 for 4.8 and takes about 1.36 for 4.9, when ya get close to its max ya need to pump loads of extra voltage just for a tiny increase, thats when its normally time to stop, but since your only doing it for a benchmark score i would just see what it takes.

 

[passey89]

If its taking ya 1.32 for 4.8 then ya gonna be needing close to 1.4v for 4.9 probably. Maybe try a higher LLC setting, might help stabilize it a little. I normally run my LLC on high but not ultra/extreme what ever the top setting is. My chip is benchmark stable at 1.28 for 4.8 and takes about 1.36 for 4.9, when ya get close to its max ya need to pump loads of extra voltage just for a tiny increase, thats when its normally time to stop, but since your only doing it for a benchmark score i would just see what it takes.

went right up to 1.4v and still wasn't stable. Did manage to get 4.85 by upping the bclk to 101 but didnt affect scores at all.

think 4.8 is pretty much the limit. caused a power surge as well so stopping lol.

19,300 on firestrike though

 

[C64]

Use this guide http://www.overclock.net/t/1411077/haswell-overclocking-guide-with-statistics
overclocking the uncore/Ringbus ratio isn't that much of a difference in performance according to that guide

I'd go with 1.375 or preferably below vcore set manual 4.9ghz just might need a ton of voltage no matter what you do though 4.8ghz at 1.32 might just be the cliff wall
Turbo Disabled
LLC maximum
VCCIN 2.0
Ringbus/Uncore ratio 40x
CPU ratio 49x
Uncore voltage Auto

And stability test with asus real bench and a good stabilty tester game like arma 3 etc with all power saving options off then turn all that back on again when stability found and maybe even use adaptive voltage