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Simply by enabling Load line Calibration I am able to drastically drop all of my voltages,
even beyond the low point when I was stress testing and CPU voltage dropped.
Not sure why this is so, I mean, if I was able to drop a little bit I would understand,
but not by this much, makes no sense.
CPU 1.32
QPI 1.32
DRAM 1.62
Anyway, I am happy, now runs cooler, less voltage to everything, and stable at 4ghz :)
Hi Guys
SomeOne Told Me Core i7 930 Multiplyer Locked In 21X ? And With Turbo=22
And When Active Just One Core Rich 23X Multi???? Is That True?
Pardon my ignorance, (amd user here) is LLC a motherboard feature? or is it part of the intel i7 architecture?Quote:
Originally Posted by The0men
didn't have time to read the whole thread and trying to decide between a 930 or a 920 (a store near me has a few left and they are available at $30 less than the 930's) so if this is a new feature available with the 930's it would greatly sway my decision.
thanks!
I believe it's a motherboard feature. I'm pretty sure all the decent boards have it in the bios. It's supposed to keep the volts constant or so at idle and at load. Instead of vdroop or vdrop. I'm no expert but I believe it's supposed to help with OC in those regards.Quote:
Originally Posted by shmadz
Please someone else chime in who is more familiar with the settings. I don't use it and I'm at 4Ghz and I don't use it either when I'm at 3.8Ghz.
I may try it to see if my temps get lower.
LLC is a motherboard feature which is going against Intel specs. They state a certain amount of vdroop is needed for safeguard to not have voltage upward spikes after heavy load. I remember someone did some tests with an oscilloscope and for sure with LLC there were spikes well above 2v. With a tool with OCCT you don't even see them. Now even if those spikes are dangerous and could kill your chip on the spot there are way to many people on the net running their oc with LLC, for years without damage even under heavy loading like folding or wcg. So I guess Intels chip are pretty resilient against this kind of abuse. Only i7s I heard to die were the ones where the person running it didn't stay within .5v differential between vtt and dram voltage.
Just use it depending on what is more stable with your setup.
Thanks darkboss, sounds like an active voltage feature - to keep voltage to the cpu more or less constant - which I'm guessing would have to be motherboard based. After the troubles I've had with the over-volt feature on my current board, (would cold boot but would not survive a re-boot because of vdroop) it sounds like mana from heaven!
Thanks for the details p2501. My guess is that the spike - while taking it into a realm you wouldn't dream of running 24/7 - is limited to ahhh, let's guess at .2 or .3 volts, or something that's not going to immediately fry your chip. rather something near a level that people would run suicide shots at. it's probably a "feature" added to compensate for the voltage lag when the cpu goes from low to full that I'm guessing would be extremely difficult to predict.
best guess, the motherboard is trying to predict heavy loads from the processor and upping the voltage actively (before the processor hits 100% and drains the caps or whatever) instead of re-actively ( where it would wait until the caps start to drain before boosting the voltage, causing that brief *and dreaded* vdroop)
just a guess of course, but an interesting option... might explain why the0men was able to lower his voltage settings?
Yer, it is a motherboard feature as stated, it's something I've always previously tried to avoid using.
Thing is though, the voltage I use with LLC is so much lower that even when under full load the voltage
is still lower than under load with the vdroop. I still don't understand it.
With any luck it will make no difference how little I use the computer under intense load.
:):):):) Guys :confused:Quote:
Originally Posted by ViViD
yes trueQuote:
Originally Posted by ViViD
:up: Tanx :)Quote:
Originally Posted by acebmxer
I've glanced through this thread and noticed people now run stability tests at a lot higher
temperature than previous generation CPU's. Is it now safe to run CPU's at these temperatures?
Say 70c for example? That's how hot mine gets when running Prime 95.
for i7, yes. Mine is 24/7 right around 70c. Can handle pretty much up to 80/85 IMO.Quote:
Originally Posted by The0men
LLC ON or Vdroop off is the same thing. This MOBO feature essentially ensures the volt you set in the bios/cmos is close to what your cpu sees in idle and what your cpu sees when fully loaded.Quote:
Originally Posted by The0men
If you have LLC off or vdroop on - you'll note, what you set in bios is not the same as idle and not the same as when loaded. It's lower. Use something like CPU-Z or Everst. Most accurate is multimeter on MOBO but software is what most people have/use.
When you have LLC off, then you need to 'up' your bios vCore so by the time it vdrops (between bios and idle) and vdroops (between idle and load) it gives your cpuz enough volt to be stable.
Most people recommend LLC ON but there's been 'reports' saying it's not a good idea. I think it's safe either way but where possible I have it off. No point chancing it right? I want this thing to last.
That is why when you have LLC ON you're getting less volts in the bios. I bet if you go back and turn off LLC off and observe your CPU-Z volt when loaded, it's the same as you have it now with LLC On. You just don't have to bump it up in the bios to eventually have it vdrop/vdroop to a lower level needed by your CPU.
Yes, I realise, however with LLC I can lower the voltage far beyond the droop or lowest voltage
reached when I have it off. That's the anomaly, not that it works or how it works.
On previous boards LLC has never behaved that way, I still always needed to keep the voltage at
Load roughly the same.
Maybe your chip then? On mine, for a stable 4Ghz OC, my load volt is the same regardless of LLC ON or OFF. I just had to bump the bios volt higher when LLC OFF.Quote:
Originally Posted by The0men
Can you keep testing and report back with some numbers? e.g. bios vs idle vs load volts?
I'll be v curious of your findings as I would love to drop my volts just because I have LLC ON. :D
I'll try and get some time, but as it is it is a hack over clock, I stuck it together, set it at 4ghz,
the first time it was stable I left it alone, can probably drop the voltage on a lot of things.
It's all about time at the moment. If I do get to knock off early or something one day and I can
get someone else to cook, I'll try tinker with the BIOS a little further.
i am searching lowest VCore batch of 930
I've been using this setup for the last couple hours to play some games. I'm thinking it's not stable though. :D
http://i39.photobucket.com/albums/e1...sign/4615a.jpg
Looking good so far! What batch # is that?Quote:
Originally Posted by johnnymossville
Thanks, It's actually pretty stable running there. I may attempt to go a bit further.Quote:
Originally Posted by Musho
Batch #3951A687
I've heard good things about #39 chips. Grats on the nice chip and frequency! :up:Quote:
Originally Posted by johnnymossville
Received a 3001A125, I'll test it with a P6T vanilla and let you guys know. I hope it's a good one!! :yepp:
Still waiting for my RAM...G.Skill Ripjaws DDR3-2000 (3x2GB).
I recently got my RAM. 4ghz is easypie with my W3530. Will shoot for 4.3ghz-4.5ghz next. Doing quick stability checks every 100mhz with Hyperpi 32m. Once I reach a speed I'm happy with, I'll follow it up with some Linx, Prime Blend and OCCT till I'm 100% stable.
Sounds like a good plan. Made me think, I wonder if sometimes a chip needs to be "broken in" I'm getting much better overclocks now after a couple months of use than I did when the cpu was new. Could also be I'm just getting better at it.Quote:
Originally Posted by Musho
4.2ghz is looking stable so far, but it seems my CPU is quite a vCore whore :( Needs a little over 1.35v at these clocks. Pretty disappointing. Temps are in the mid 70s. I'd love a golden i7 batch and run it at 4,5ghz :p: