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Hasewell 4770k OC Voltage?

post #1 of 9
Thread Starter 
I have a question about the uncore voltage(Also called Ring Bus and Cache Voltage) on my 4770k. I have a good overclock but am worried I am pushing the uncore to far.

Im at 4.6ghz 1.375v and 4.3ghz cache frequency and 1.365.

Is 1.365v to much voltage?

I saw this the other day.

it says 1.35 for Air? Im on Water? All my temps are great and I am delidded.

Thank u
post #2 of 9
I run a 1.35v cache voltage with a 48X multi for months without a problem
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post #3 of 9
Yeah that's quite a lot, I need 1.145v for 43x or 1.165v for 44x.


Btw It wont make any real difference if its at 40 or 44x, sometimes its even slower at higher speeds, yes as weird as it sounds.
I think its because it affects L2 and L3 speeds (Aida64 memory benchmark), although its minimal >> max 4-6gb/s at already fast 200gb/s., that's why it doesn't affect the results much.

I tested Cinebench11.5 multiple times and usually the best score was at 41-42x cache.


If you really need thaat high voltage then lower it down to 40x or default (stock voltage) and forget about it.

btw, what is your default cache and cpu voltage?
Edited by TheHunter - 9/28/13 at 3:09pm
post #4 of 9
Thread Starter 
Yeah I defiantly need 1.365v for 4.3? its weird? right now if I were to set it at 4.4 at the same voltage prime95 will freeze as soon as I launch it. I mean am I ok with this? temps are fine?
post #5 of 9
Thread Starter 
I just thought of something. I am using the cpu graphics for now till I can get a video card. I know the ring bus incorporates the graphics as well? maybe that's why I need sooo much?
post #6 of 9
I've been running 1.395v for 4.7GHz since Haswell launched... my chip still works, for now thumb.gif

That voltage isn't really unheard of for 4.6GHz - many Haswells seem to hit a "voltage wall" around 4.5GHz and need quite a bit of a bump to attain higher frequencies.
post #7 of 9
Thread Starter 
yeah.. what about the cache voltage hairygamer? im not worried about the vcore but the uncore voltage
post #8 of 9
Quote:
Originally Posted by HairyGamer View Post

I've been running 1.395v for 4.7GHz since Haswell launched... my chip still works, for now thumb.gif

That voltage isn't really unheard of for 4.6GHz - many Haswells seem to hit a "voltage wall" around 4.5GHz and need quite a bit of a bump to attain higher frequencies.

You'll upgrade long before degrading the chip with that voltage
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post #9 of 9
Quote:
Originally Posted by paulb787 View Post

yeah.. what about the cache voltage hairygamer? im not worried about the vcore but the uncore voltage

I have 1.2v for the cache at 42x - no sense in really pushing the cache on Haswell since it's memory bandwidth is almost double that of Ivy even at stock clocks. You'll only see differences in some benchmarks and they will be minimal gains. I've considered pushing my cache further but I just don't have the patience since I've been stable and happy.
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