i7-3770K @ 4.8ghz - vcore

[Blades]

What vcore should I use to reach this speed? Gigabyte's wonderful board suggested 1.5V - and while I'm thinking of smashing this board, recording it, and posting the link for people considering the uses of this board.. I don't want to toast everything just yet. so.. no 1.5V.. yet

Is it possible to not reach 4.8ghz no matter what vcore?

 

[richierich1212]

You'll most likely not want the temps to reach that high. At only 1.16v with my H50 and scythe GT 1850rpm fan using linx avx my temps shoot up to 70c+. 1.28v I hit 90c.

 

[Blades]

I can handle the temps.. Hell, at 1.4V I never went past 75C

 

[SickBeast]

1.5v is beyond nuts imo.

 

[richierich1212]

With your 3770K 1.4v you've never went past 75c? Water cooling?

 

[rge2]

I need 1.25v for 4.6 prime stable (temps max mid 70s prime), 1.31v for 4.7 prime stable (temps max 81C), 1.38 for 4.8 just to prime short time and temps near 90C, but not stable. But vcore varies cpu to cpu.

 

[Blades]

With your 3770K 1.4v you've never went past 75c? Water cooling?

Yep. That's saying 75c is the max I saw.. 4.7 is completely stable now. I have a feeling the bios was rushed on the z77x-ud5h - hence the almost bi-weekly updates. I'm running the latest, as of 05-03-2012.. something.8a

I have the gpu at 1.5ghz. This gigabyte board really screws the pooch on idle power consumption, among other things. 46W vs 36W - ivb-gigabyte vs sb-asrock

 

[rgallant]

if you haven't you could look here

http://www.overclock.net/t/1247869/...ages-temps-bios-templates-inc-spreadsheet/140

-here's some 4.9's ,post 126,142,146-147. ,
-most from the same store not to far from me but their OOS.

also has it's own ud5h section with a well known user posting there.

http://www.overclock.net/t/1239993/...support-thread-and-club-ud5h-ud3h-d3h-and-all.

good luck.

 

[Don Karnage]

I can handle the temps.. Hell, at 1.4V I never went past 75C

Finally someone like me with some balls. All I ever read on this forum is a bunch of pansy's who refuse to to push the chips and panic when they hit 80c.

I need 1.4v for 4.8

 

[kami]

My 3770k needs 1.35v for 4.8ghz

 

[Blades]

Finally someone like me with some balls. All I ever read on this forum is a bunch of pansy's who refuse to to push the chips and panic when they hit 80c.

I need 1.4v for 4.8

My Tegra 3 reaches 72C and thats only cooled by the healing power of laughter. I guess the approach is.. you don't know until you find out. Core #3 reads rediculously low on my i7... about 10 degC lower.. most of the time.. that must be the sleepy core..

So who knows.. I would like a water cooler with a beefier, or tunable water pump. I also think this new H80 I purchased has some air in it..

Thanks to everyone for the links and info..

 

[LagunaX]

I'd guess 1.34-1.38v depending on your chip.

 

[Rvenger]

Finally someone like me with $$ to blow.

Fixed!

 

[aaksheytalwar]

Fixed!

This. Anyway 1.4 is highly likely to get you there. But going over 4.5 isnt worth it IMO

 

[Blades]

Fixed!

Oh where would you guys be without people willing to take a risk and push the envelope? Gotta say.. this is one tough envelope to push.. Why do the mobile procs lack an IHS.. while we get stuck with peanut butter thermal paste and that extra shim of IHS goodness?

What would happen if the surface of the cooling device were machined so that it fit perfectly on top of a delidded proc?

 

[Blades]

Yeah mine falls on its face at 4750.. requires too much (additional) vcore.. I'm now running at 46x101.. 101 because supposedly this gigabyte board is more stable at that 101bclock (huh, why?).

 

[Rvenger]

Oh where would you guys be without people willing to take a risk and push the envelope? Gotta say.. this is one tough envelope to push.. Why do the mobile procs lack an IHS.. while we get stuck with peanut butter thermal paste and that extra shim of IHS goodness?

What would happen if the surface of the cooling device were machined so that it fit perfectly on top of a delidded proc?

It wouldn't be any fun if I didn't pick on Don :awe:

 

[Blades]

I got pissed off and just craaaaaaanked the voltage up.. Next I'm lighting it on fire.. jk.. maybe..

notice those temps.. I was just reading the latest anandtech ivy bridge mobo article.. talking about 1.2V being a tad too much for 4.7.. Seriously.. get out of town.. Are the worst clocking chips malaysian chips?

I also tried 1.5V.. for fun.. no fire yet. no fun.

 

[SickBeast]

Man...Ivy really hits a wall at 4.5ghz. It's worse than Sandy Bridge in that regard.

 

[Blades]

Ok at 4.5ghz, my 3770K just beat the score for 4.7ghz (cinebench)... And no.. the 4.7ghz score was not under any throttling.. Strange huh?

but yeah.. past 4.4ghz and the voltage required increases exponentially.. I undervolted for 4.3ghz..

 

[Blades]

Just an update.. I was able to go with +.1V offset to get 4650mhz.. Lowering the PLL voltage really helped out.. I'm at 1.595V right now.. default was 1.8.. Now, whats the lowest I can go? Or rather.. what are the consequences of "finding out" how low I can go? From what I understand by reading about the internets, it controls the clock speed.. more so, the stability of the clock speed..

 

[SHAQ]

Finally someone like me with some balls. All I ever read on this forum is a bunch of pansy's who refuse to to push the chips and panic when they hit 80c.

I need 1.4v for 4.8

You're inspiring me to go for 4.8+ on my 3820. Now where is that Intel Tuning Plan page....

 

[Ferzerp]

Ok at 4.5ghz, my 3770K just beat the score for 4.7ghz (cinebench)... And no.. the 4.7ghz score was not under any throttling.. Strange huh?

but yeah.. past 4.4ghz and the voltage required increases exponentially.. I undervolted for 4.3ghz..

Not strange at all. SB (and IB now) will be "stable" but perform slower due to internal error handling. Your 4.7Ghz wasn't really stable. See Idontcare's old post regarding linpack and the GFLOPS rating at different speeds/voltages for reference.

 

[SHAQ]

Just an update.. I was able to go with +.1V offset to get 4650mhz.. Lowering the PLL voltage really helped out.. I'm at 1.595V right now.. default was 1.8.. Now, whats the lowest I can go? Or rather.. what are the consequences of "finding out" how low I can go? From what I understand by reading about the internets, it controls the clock speed.. more so, the stability of the clock speed..

How much lower vcore when lowering pll? I haven't tried that yet. I'm hitting a wall at 4.82 with the 3820.

 

[Blades]

How much lower vcore when lowering pll? I haven't tried that yet. I'm hitting a wall at 4.82 with the 3820.

I tried so much stuff I forgot, but it would vary from system to system - so take it .005V at a time.. I also just cranked up the LLC to max the voltage on load while keeping my offset lower.. I am now stable at 4.545ghz with +.03V offset (1.3V is peak) - probably could do lower.. and now 4.646 requires +.07V.. 1.344V peak..

I'm somewhat content, as this is probably the best I could do.. making chicken salad out of chicken shit. yum.

Good luck on your OC..

PS: You reached your goal of 4.8 20MHz ago.