need help with i7 @ 4.4

bushmandan · 2 Jun 2010 at 14:43

i have got 4.4ghz ht on llc on now 1.35vcore and stays 1.35 now up ioh to 1.3 and ppl to 1.9 running tests now ill post results soon

rjk · 2 Jun 2010 at 14:52

your load voltage is too low

4.4 has needed around 1.425 or more on EVERY nehalem i have seen capable of that speed

then you are in custom water territory or even SSphase

your QPI is too low as well, for speeds like that you will be needing around 1.4 from what i have seen, maybe 1.9 on the pll and definatly 1.66 on the memory

either way, you are thrashing the chip, especially on air.

not to be rude or anything, but you are running on what is considered a budget motherboard. chances are it just wont do the clock you are aiming for.
my fully watercooled rampage 2 starts to sweat at those speeds

HW91 · 2 Jun 2010 at 15:10

rjkoneill said:
your load voltage is too low

4.4 has needed around 1.425 or more on EVERY nehalem i have seen capable of that speed

quite a few D0's at first made 4.6GHz at 1.366v

bushmandan · 2 Jun 2010 at 15:40

ive noticed aswell that the cpu throttles down to 20.5x at 4.4 but its dont do this at 4.2 or 4.3 must be the board that what a lot of forums are saying

rjk · 2 Jun 2010 at 16:05

HW91 said:
quite a few D0's at first made 4.6GHz at 1.366v

none of the thousands I have overclocked did? :confused:

certainly not stable anyway
my 920 did 21X222 but that was nowhere near stable.

realistically anything over 4.4 is going to need something more substantial than air cooling.

PaulyD · 2 Jun 2010 at 17:30

bushmandan said:
ive noticed aswell that the cpu throttles down to 20.5x at 4.4 but its dont do this at 4.2 or 4.3 must be the board that what a lot of forums are saying

Thats turbo throttling to stop you damaging your chip, combination of both high voltage and high temperatures.

I'm with rjkoneill here, I have got my chip 3d benchable at about 1.39v load but will be nowhere near stable at that speed for 24/7 and will need a hefty increase in vcore, vTT is around the same as well - 1.3875v

Its all fun benching etc but your really pushing the equipment to the edge

coupe69 · 2 Jun 2010 at 18:04

What else are you running in your system?

You've gotta ask yourself is it really worth the extra hassle just to get a few more MHz out of it?

The only way you'd tell the difference between 4GHz and 4.4GHz is through benchmarking.

On a day to day basis it's really not worth having your components living right on "the edge" as you'll not see any real benefit from it.

HW91 · 2 Jun 2010 at 18:17

coupe69 said:
The only way you'd tell the difference between 4GHz and 4.4GHz is through benchmarking.

and trying to run Crysis with a ridiculous amount of particles...

Justintime · 3 Jun 2010 at 20:46

rjkoneill said:
not to be rude or anything, but you are running on what is considered a budget motherboard. chances are it just wont do the clock you are aiming for.
my fully watercooled rampage 2 starts to sweat at those speeds

My P6T SE does 222x19 for 4.2Ghz 1.35v all day long with 12GB CAS 7 8 7 1600MHz RAM, ibt 500 run and prime blend 48hr stable + no crashes ever.

Using 1.3v IOH, 1.35v QPI, 1.3 SB, 1.62V RAM 1.35v 920 D0 with a Noctua D14, temps top out at 77C IBT on the hot days

bushmandan · 6 Jun 2010 at 12:44

do u use less volts on a 19x multi than a 21 cus i only need 1.2 IOH 1.32 qpi and 1.32 vcore using 21x200 and do u have LLC on?

Justintime · 6 Jun 2010 at 12:50

bushmandan said:
do u use less volts on a 19x multi than a 21 cus i only need 1.2 IOH 1.32 qpi and 1.32 vcore using 21x200 and do u have LLC on?

LLC is off, i've had numerous issues over the years since dampening/LLC has been introduced where the cpu was stable under load testing but generally unstable in non loaded/idle situations, random bluescreens, freezes etc.. Due to the fact that with LLC on the vcore under load actually went UP instead of drooping and thus the cpu was stable, however when unloaded it drooped back down to unstable levels. I'm a firm believer in higher set BIOS vcore rather than LLC.